{"title":"Spacers\/Extension Tubes","description":"","products":[{"product_id":"5mm-t2-extension","title":"PrimaLuce Lab 5mm T2 extension","description":"\u003cp\u003e\u003cspan\u003eThe PrimaLuce Lab 5mm T2 extension is the perfect tool to achieve the perfect focus for your astrophotography. This extension is designed to fit between your camera and telescope and provides a secure connection that eliminates any unwanted movement. With its high-quality materials and precision engineering, the PrimaLuce Lab 5mm T2 extension offers unmatched stability, accuracy, and reliability. Get ready to capture stunning detail and depth in your astroimages with this essential accessory.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eT2 extension rings have different uses:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003eThey can be screwed to optical accessories (such as field flatteners or focal reducers) to bring the camera sensor at the right distance from the lens (to optimize performance)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThey can be used to separate the mechanical accessories that, when used together, can touch and then not work properly (eg an off-axis guider could touch a filter wheel and it could prevent its rotation searching for a guide star)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003cspan\u003e- Thickness: 5mm\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- Material: aluminum\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- Black anodizing\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- T2 male and female thread on sides\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- External knurling to improve grip\u003c\/span\u003e\u003c\/div\u003e","brand":"PrimaLuce Lab","offers":[{"title":"Default Title","offer_id":44702154785088,"sku":"PL3304205","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/5mm-t2-extension.jpg?v=1679771652"},{"product_id":"7mm-t2-extension","title":"PrimaLuce Lab 7mm T2 extension","description":"\u003cp\u003e\u003cspan\u003eThe PrimaLuce Lab 7mm T2 extension is the perfect tool to achieve the perfect focus for your astrophotography. 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Get ready to capture stunning detail and depth in your astroimages with this essential accessory.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eM48 extension rings have different uses:\u003c\/span\u003e\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003e\u003cspan\u003eThey can be screwed to optical accessories (such as field flatteners or focal reducers) to bring the camera sensor at the right distance from the lens (to optimize performance)\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eThey can be used to separate the mechanical accessories that, when used together, can touch and then not work properly (eg an off-axis guider could touch a filter wheel and it could prevent its rotation searching for a guide star)\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h1\u003e\n\u003cdiv\u003e\u003cspan\u003e- Thickness: 5mm\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- Material: aluminum\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- Black anodizing\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- M48 male and female thread on sides\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan\u003e- External knurling to improve grip\u003c\/span\u003e\u003c\/div\u003e","brand":"PrimaLuce Lab","offers":[{"title":"Default Title","offer_id":44702159274304,"sku":"PL3304805","price":35.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/5mm-m48-extension.jpg?v=1679771670"},{"product_id":"7mm-m48-extension","title":"PrimaLuce Lab 7mm M48 extension","description":"\u003cp\u003e\u003cspan\u003eThe PrimaLuce Lab 7mm M48 extension is the perfect tool to achieve the perfect focus for your astrophotography. 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Unlock the true potential of your astrophotography equipment and capture the beauty of the universe with PrimaLuce Lab's reliable and innovative 20mm spacers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhen we install many instruments (for example telescope with guide scope in parallel) on the mount, it can happen that they are too close together, and that some element touches the others. That's why we created the PLUS 20mm spacers that can be fixed between two mechanical elements (such as a plate and the support rings), keeping the functionality of the PLUS system. In fact they have four holes, with 20mm separation to fix PLUS Vixen dovetail bars and guide rings and 55mm for PLUS Losmandy dovetail bars. 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data-mce-fragment=\"1\"\u003eMaterial：\u003c\/strong\u003eAluminum 6061-T6\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAdapter：\u003c\/strong\u003eM48*0.75  female threads and M54*0.75 male threads\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eExtention Length:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e17.5mm\u003c\/p\u003e","brand":"Player One Cameras","offers":[{"title":"Default Title","offer_id":44725367636288,"sku":"M48F-M54M-17.5","price":29.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/M54M-M48F-17-600x600.jpg?v=1680093109"},{"product_id":"player-one-m48f-m48m-17-5mm-extender","title":"Player One Astronomy M48F-M48M 17.5MM Extender","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eM48F-M48M 17.5mm adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMaterial：\u003c\/strong\u003eAluminum 6061-T6\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAdapter：\u003c\/strong\u003eM48*0.75  female threads and M48*0.75 male threads\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eExtention Length:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e17.5mm\u003c\/p\u003e","brand":"Player One Cameras","offers":[{"title":"Default Title","offer_id":44725367865664,"sku":"M48F-M48M-17.5","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/M48_E5_BB_B6_E9_95_BF_E6_A1_B617.5mm-600x600.jpg?v=1680093113"},{"product_id":"player-one-m48f-m48m-20mm-extender","title":"Player One Astronomy M48F-M48M 20MM Extender","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eM48F-M48M 20mm adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMaterial：\u003c\/strong\u003eAluminum 6061-T6\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAdapter：\u003c\/strong\u003eM48*0.75  female threads and M48*0.75 male threads\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eExtention Length:\u003c\/strong\u003e\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003e20mm\u003c\/p\u003e","brand":"Player One Cameras","offers":[{"title":"Default Title","offer_id":44725368291648,"sku":"M48F-M48M-20","price":24.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/M48_E5_BB_B6_E9_95_BF_E6_A1_B620mm-3-600x600.jpg?v=1680093116"},{"product_id":"altair-10mm-m48-spacer-extension-tube-ring-easy-grip","title":"Altair 10mm M48 Spacer Extension Tube Ring - Easy Grip","description":"\u003cspan\u003eThe Starwave 10mm spacer tube has a male and female M48x0.75 filter thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other M48 fixed spacers or M48 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895311036736,"sku":"M48-10-EXT","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/10mm-m48-spacer-extension-tube-ring-easy-grip-218-p.jpg?v=1682268746"},{"product_id":"altair-10mm-t2-spacer-extension-tube-ring-easy-grip","title":"Altair 10mm T2 Spacer Extension Tube Ring - Easy Grip","description":"\u003cp data-mce-fragment=\"1\"\u003eExtension Tube with a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eCan be stacked with other spacers to get the correct spacing between your astrophotography camera and reducer or flattener optics.\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895316672832,"sku":"T2-10-EXT","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/10mm-t2-spacer-extension-tube-ring-easy-grip-219-dv-p.jpg?v=1682268848"},{"product_id":"altair-15-5mm-m48-spacer-extension-tube-ring-easy-grip-for-astro-cameras","title":"Altair 15.5mm M48 Spacer Extension Tube Ring - Easy Grip for Astro cameras","description":"\u003cp\u003eExtension Tube with a male and female M48x0.75 (M48) camera-accessory thread on each end.\u003cbr\u003e\u003cbr\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003cbr\u003e\u003cbr\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/p\u003e\n\u003cp\u003eCan be stacked with other spacers to get the correct spacing between your astrophotography camera and reducer or flattener optics.\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895317000512,"sku":"M48-15.5-EXT","price":14.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/15.5mm-m48-spacer-extension-tube-ring-easy-grip-for-astro-cameras-6328-p.jpg?v=1682268852"},{"product_id":"altair-15-5mm-t2-spacer-extension-tube-ring-easy-grip-for-astro-cameras","title":"Altair 15.5mm T2 Spacer Extension Tube Ring - Easy Grip for Astro cameras","description":"\u003cp\u003eExtension Tube with a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003cbr\u003e\u003cbr\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003cbr\u003e\u003cbr\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/p\u003e\n\u003cp\u003eCan be stacked with other spacers to get the correct spacing between your astrophotography camera and reducer or flattener optics.\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895317197120,"sku":"T2-15.5-EXT","price":14.1,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/15.5mm-t2-spacer-extension-tube-ring-easy-grip-for-astro-cameras-6325-p.jpg?v=1682268855"},{"product_id":"altair-m48-30mm-extension","title":"Altair M48 30mm Extension","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your shooting precision with the Altair M48 30mm Extension. The durable and high-quality extension is designed to improve accuracy and stability, making it a must-have accessory for any shooting enthusiast. Elevate your performance and achieve better results with this cutting-edge M48 30mm Extension.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Starwave 30mm spacer tube has a male and female M48x0.75 filter thread on each end.\u003cbr\u003e\u003cbr\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003cbr\u003e\u003cbr\u003eThe spacer can be \"stacked\" with other M48 fixed spacers or M48 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895318016320,"sku":"m48-30-ext","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/30mm-m48-spacer-extension-tube-easy-grip-222-p.jpg?v=1682268876"},{"product_id":"altair-m48-5-mm-extension","title":"Altair M48 5 mm Extension","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your astrophotography with the Altair M48 5mm Extension. Achieve optimal focus and precision in your telescope setup. High-quality construction for durability and performance. Perfect for capturing stunning celestial moments. Elevate your imaging game today!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Starwave 5mm spacer tube has a male and female M48x0.75 filter thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other M48 fixed spacers or M48 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895318147392,"sku":"M48-5-EXT","price":15.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/5mm-m48-spacer-extension-tube-ring-easy-grip-224-p.jpg?v=1682268880"},{"product_id":"altair-m48-tilt-adapter","title":"Altair M48 Tilt Adapter","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your stargazing experience with the Altair M48 Tilt Adapter. Perfectly designed to align your camera for optimal astrophotography results. Capture stunning celestial images effortlessly. Compatible with a wide range of telescopes. Elevate your astronomy game today!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Altair M48 tilt adjuster is designed to give the perfect image field by making the CCD or DSLR camera sensor completely orthogonal to the telescope's optical axis.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFor solar imaging with the Daystar Quark or just about any Hydrogen Alpha Etalon filter, the M48 Tilt Adjuster is pretty much a mandatory to solve Newton's Rings or Banding in the image. For visual use it can be used to tune-in and hold the \"sweet spot\" to get the best preformance from your Quark or any Solar telescope with an Ha Etalon filter.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFor deepsky imaging the tilt adjuster is used to compensate for inevitable tilt changes in the \"imaging train\" when accessories like a filter wheel, focuser, and so-on are used. This gives a more even pattern of star shapes in the image. Especially important when using field flatteners or coma correctors to fine tune the image.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe M48 Tilt adjuster is precision machined in our workshop on a CNC lathe with M48x0.75 male and female threads on each side. (Also known as \"astro-filter\" thread). It therefore can be used with most extension tubes and adapters. 3 tilt adjustment screws are arranged in a 120 degree opposing pattern. They can be locked in position after adjustment using the corresponding locking screws.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eWith the camera tilt adjuster, adjustment to fractions of a millimeter are possible for a perfectly flat field with optimal off-axis image sharpness. No more hunting the \"sweet spot\" for your particular setup, just leave it on! The camera tilt adjuster is ideal for use with larger CCD chips or DSLRs as well as field flatteners and reducers in any fast optical system, where deviation from the focal plane edge is more critical.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe M48 tilt adjuster adds 10-11mm to the light path, depending on the amount of tilt adjustment. Being M48 format on both sides, the camera tilt adjuster is fully compatible with the Altair range of M48 spacers and adapters, and it can be connected directly with most Altair flatteners and DSLR adapters using the wider M48 format. Of course you can convert it to M42 on the camera side by using the M48 female to M42 male step-down adapter.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eQ: When is the camera tilt adjuster required?\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ea) For deepsky imaging with fast focal ratio telescopes:\u003c\/strong\u003e\u003cspan\u003e Any train of imaging adapters, flatteners and filters is inevitably slightly tilted from the ideal focal plane due to the combined effect of several accessories all connected together, multiplying the almost invisible tolerances in connections between parts. The combined effect can often be seen at the edges of your CCD or DSLR camera chip. DSLRs often suffer from very slight misalignment too which adds to the effect. Some CCD cameras have built-in tilt adjusters to compensate for this, however most cannot be adjusted once the camera is connected and focused. The camera tilt adjuster is recommended for use with all cameras and flatteners where stars appear slightly different, i.e. elongated or larger and fuzzier one or more of the field edges. It fits between the focuser and telescope. It can be adjusted in real-time for best results, using the easily accessible push-pull collimation screw system at the sides. For the perfectionist, it's possible to use CCD Inspector software to derive the exact amount of tilt as a numerical value, and to adjust it out of your imaging train completely. The tilt adjuster can also be used to centre reflections on the camera cover glass (halos caused by filters look better on-centre) and to manage alignment issues between filter wheel, off-axis-guiders, and other parts of your imaging system. Example setup: Camera \u0026gt; M48 Adapter \u0026gt; M48 Tilt Adjuster \u0026gt; Field Flattener \u0026gt; Focuser\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eb) For solar imaging with a hydrogen alpha Etalon filter to cure alignment problems:\u003c\/strong\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eFirstly Etalons often create artifacts known as \"Newton's Rings\" and \"Banding\" in solar images taken with mono and colour cameras. By tilting the camera relative to the Etalon filter these effects can be reduced or eliminated. Example setup: Camera \u0026gt; 1.25\" to 2\" Adapter \u0026gt; M48 Tilt Adjuster \u0026gt; Quark \u0026gt; Extension Tube \u0026gt; Focuser.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eSecondly, focuser sag or mis-alignment of the focuser to optical axis can cause problems: Often the full disc solar image can give uneven illumination and certain off-band areas, causing areas on the solar surface or prominences to appear less contrasty - or sometimes even dissappearing completely. You can use the tilt adjuster before the quark to adjust for the best image to reduce these issues. Example setup: Quark \u0026gt; Extension Tube \u0026gt; M48 Tilt Adjuster \u0026gt; 2\" Barrel \u0026gt; Focuser\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWhat types of optical systems are likely to benefit from the camera angle tilt adjuster?\u003c\/strong\u003e\u003cspan\u003e Most optical systems will show tilt if it's present, and tilt is more often than not there - if you consider the number of threaded accessories being used! The effects of tilt become more critical with systems such as Newtonians (with or without coma correctors), and for example with fast APOs like the Altair 80mm F6 ED Triplets with Planostar 1.0x flatteners, Starwave 80mm ED and 102mm ED refractors (which operate at F5.6 with their 0.8x reducers in place). \u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895318278464,"sku":"M48-TILT","price":80.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/altair-m48-camera-tilt-adjuster-212-p.jpg?v=1682268884"},{"product_id":"altair-t2-20mm-extension","title":"Altair T2 20mm Extension","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your shooting capabilities with the Altair T2 20mm Extension. Designed for precision and performance, this innovative camera accessory extends your reach and captures stunning visuals. Explore new angles and unleash your creativity with the Altair T2 20mm Extension.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Starwave Extension Tube has a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895319032128,"sku":"T2-20-EXT","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/20mm-t2-spacer-extension-tube-ring-easy-grip-221-p.jpg?v=1682268894"},{"product_id":"altair-t2-30mm-extension","title":"Altair T2 30mm Extension","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your shooting precision with the Altair T2 30mm Extension. Discover seamless compatibility and improved accuracy for your optics. Upgrade your firearm accessory collection today!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Starwave Extension Tube has a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895319163200,"sku":"T2-30-EXT","price":22.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/30mm-t2-spacer-extension-tube-ring-easy-grip-223-p.jpg?v=1682268898"},{"product_id":"altair-t2-5mm-extension-ring","title":"Altair T2 5mm Extension Ring","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eEnhance your astrophotography setup with the Altair T2 5mm Extension Ring. Achieve perfect focal distance and capture stunning celestial wonders. Durable, precise, and compatible with various T2 accessories. Elevate your astronomy game today!\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Starwave Extension Tube has a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895319654720,"sku":"T2-5-EXT","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/5mm-t2-spacer-extension-tube-ring-easy-grip-225-p.jpg?v=1682268902"},{"product_id":"altair-t2-7-5mm-extension-ring","title":"Altair T2 7.5mm Extension Ring","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUnlock the full potential of your photography gear with the Altair T2 7.5mm Extension Ring. Enhance your macro shots and capture stunning close-up details effortlessly. Precision-engineered for durability and compatibility, this extension ring is a must-have for every passionate photographer. Elevate your creativity and explore new dimensions in photography with Altair T2 7.5mm Extension Ring.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Starwave Extension Tube has a male and female M42x0.75 (T2) camera-accessory thread on each end.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eIt has an Easy-Grip knurled ring for easier loosening \/ tightening.\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan\u003eThe spacer can be \"stacked\" with other T2 spacers and T2 variable spacers in the range to achieve the exact distance you require between camera and flattener.\u003c\/span\u003e\u003c\/p\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895320899904,"sku":"T2-7.5-EXT","price":19.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/products\/7.5mm-t2-spacer-extension-tube-ring-easy-grip-227-p.jpg?v=1682268906"},{"product_id":"altair-t2-variable-locking-extension-ring-easy-grip","title":"Altair T2 Variable Locking Extension Ring - Easy Grip","description":"\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eUnlock precision and control with the Altair T2 Variable Locking Extension Ring - Easy Grip. Enhance your photography experience with this versatile accessory, designed for seamless adjustment and a comfortable hold. Achieve perfect shots with ease and confidence.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan data-mce-fragment=\"1\"\u003eThe Starwave variable spacer \/ extension ring has been redesigned to minimise flex and enables you fine tune the exact distance you require between camera and flattener or filter holders, etc.\u003cbr\u003eUseful in astronomy and microscopy for precisely adjusting the spacing between optics and camera sensors to get the best image.\u003cbr\u003e\u003cbr\u003eSpacing distance can be adjusted precisely, measured between the two surfaces shown in the product image. Once adjusted, it's then locked in position with the locking ring.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeavy-duty construction to control flex in the imaging train.\u003c\/li\u003e\n\u003cli\u003eEasy-Grip knurled ring for easier loosening \/ tightening.\u003c\/li\u003e\n\u003cli\u003eMale and female T2 M42x0.75 thread on each end comaptible with most camera accessories.\u003c\/li\u003e\n\u003cli\u003eThe spacer can be \"stacked\" with other T2 fixed or variable spacers in the range to achieve the exact distance you require between camera and optics.\u003c\/li\u003e\n\u003cli\u003eCompatible with Altair Nikon and Canon T2 DSLR Adapters.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Altair Astro","offers":[{"title":"Default Title","offer_id":44895321030976,"sku":"T2-VAREX","price":40.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/t2-variable-locking-extension-ring-easy-grip-231-p.jpg?v=1690736299"},{"product_id":"celestron-m42-spacer-ring-kit","title":"Celestron M42 Spacer Ring Kit","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eOptimize your astroimaging setup with the Celestron M42 Spacer Ring Kit, designed to precisely adjust the back-focus distance between your camera and telescope. This kit is essential for achieving the best possible astroimages, especially when dealing with full-frame sensors where improper back-focus can lead to elongated stars at the image corners. The kit includes three spacer rings of varying lengths (7.5mm, 12mm, 30mm), each crafted to fit standard male and female T-Threads commonly found on T-Rings and T-Adapters.\u003c\/p\u003e\n\u003cp\u003eFor example, using a RASA 8 telescope with a ZWO ASI 183 MC PRO camera requires a specific back-focus distance. The RASA 8, with its included M42 camera adapter, has a required back-focus distance of 25mm, while the ZWO ASI 183 MC PRO camera consumes 17.5mm of back-focus. To achieve the correct back-focus distance in this scenario, a 7.5mm M42 spacer ring is necessary.\u003c\/p\u003e\n\u003cp\u003eThe Celestron M42 Spacer Ring kit caters to various popular Celestron optical tubes and T-thread camera adapters, providing flexibility and precision in your astrophotography setup. Depending on your astrophotography method (DSLR or CCD\/CMOS camera), the M42 Spacer Ring can be placed between your T-Ring and T-Adapter for optical tubes, or between the camera and T-Adapter.\u003c\/p\u003e\n\u003cp\u003eThis quick guide will help you choose the right spacer ring for EdgeHD, Schmidt-Cassegrain, and RASA 8 optical tubes:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e7.5mm: Ideal for achieving proper spacing with the RASA 8 for many ZWO cameras.\u003c\/li\u003e\n\u003cli\u003e12mm: Suitable for proper spacing with the RASA 8 for many Atik cameras.\u003c\/li\u003e\n\u003cli\u003e30mm: Converts ZWO cameras with filter sliders to the 55mm back-focus standard for use with Schmidt-Cassegrain \u0026amp; EdgeHD.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach M42 Spacer Ring is made from machined aluminum with a black anodized finish. The internal surfaces are blackened and glare-threaded to ensure the highest contrast, with a knurled surface for easy threading and unthreading. These rings are compatible with M42 x 0.75 (T-thread) camera adapters, making them a versatile and essential addition to your astrophotography gear.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003eSpecifications\u003c\/h1\u003e\n\u003ctable class=\"table-open\" id=\"product-specs-list\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eThread:\u003c\/td\u003e\n\u003ctd\u003eM42 x 0.75\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSpacer lengths:\u003c\/td\u003e\n\u003ctd\u003e7.5mm (.29\"), 12mm (.47\"), and 30mm (1.18\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConstruction:\u003c\/td\u003e\n\u003ctd\u003eAluminum black anodized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterior:\u003c\/td\u003e\n\u003ctd\u003eBlackened and glare threaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExterior:\u003c\/td\u003e\n\u003ctd\u003eKnurled grip surface, each ring labeled with its length\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSolar Warning\u003c\/td\u003e\n\u003ctd class=\"solar-warning\"\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalifornia Residents\u003c\/td\u003e\n\u003ctd class=\"cali-prop65-warning\"\u003e\n\u003cbr\u003e\n\u003cp class=\"cali-warning-text\"\u003e\u003cstrong\u003eWARNING:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eCancer and Reproductive Harm -\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.p65warnings.ca.gov\/\" target=\"_blank\"\u003ewww.P65Warnings.ca.gov\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Celestron","offers":[{"title":"Default Title","offer_id":46978274165056,"sku":"93618","price":47.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/93618_M42_Spacer_Ring_Kit_01_570x380_2x_e3b43b20-f10c-437e-bcae-78eb0c74e54f.jpg?v=1700613165"},{"product_id":"zwo-m42-male-m48-female-extender-22-5mm-length","title":"ZWO M42(male)-M48(female) extender (22.5mm length)","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eZWO M42-M48 Extender (22.5mm Length): Essential for Perfect Camera and Filter Wheel Alignment\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eEnhance your astrophotography setup with the ZWO M42(male)-M48(female) Extender, a crucial accessory for achieving optimal back focus distance. Designed specifically for ASI2600MM Pro users, this extender ensures seamless integration with the 7x36mm filter wheel, providing a streamlined solution for setups not incorporating the OAG-L.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eSpecifically for ASI2600MM Pro:\u003c\/strong\u003e Tailored to fit the ASI2600MM Pro camera, ensuring compatibility and ease of use.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003e22.5mm Length:\u003c\/strong\u003e Precisely crafted to offer 22.5mm of extension, crucial for reaching the 55mm back focus distance.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eIdeal for Filter Wheel Connection:\u003c\/strong\u003e Enables direct attachment to the 36mm Electronic Filter Wheel (EFW) without the need for an Off-Axis Guider (OAG-L).\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eEasy Installation:\u003c\/strong\u003e Simply remove the camera's sensor tilt plate and secure the extender using the provided screws.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eCloser Filter-Sensor Distance:\u003c\/strong\u003e Helps minimize the gap between the filter and the sensor, enhancing imaging quality.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eDurable Construction:\u003c\/strong\u003e Made with high-quality materials for lasting use and reliability in various astrophotography conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe ZWO M42-M48 Extender (22.5mm Length) is a must-have for astrophotographers using the ASI2600MM Pro, particularly when looking to connect with a 36mm filter wheel. Its precision design and functionality make it an invaluable tool for achieving the perfect imaging setup.\u003c\/p\u003e","brand":"ZWO","offers":[{"title":"Default Title","offer_id":47214694498624,"sku":"ZWO-M42-M48-22.5","price":25.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/0411.jpg?v=1698604369"},{"product_id":"player-one-astronomy-m54m-m68f-17-5mm-adapter","title":"Player One Astronomy M54M-M68F 17.5MM Adapter","description":"\u003cp\u003e\u003cstrong\u003eM54M-M68F 17.5mm adapter\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eMaterial：\u003c\/strong\u003eAluminum 6061-T6\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAdapter：\u003c\/strong\u003eM54*0.75  male threads and M68*0.75 female threads\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eExtention Length:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e17.5mm\u003c\/p\u003e","brand":"Player One Cameras","offers":[{"title":"Default Title","offer_id":48978308399424,"sku":"M54M-M68F-17.5","price":39.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/M68F-M54M-20mm-extender-2.jpg?v=1718138692"},{"product_id":"m48male-m48female-extender-16-5mm-length","title":"M48(male)-M48(female) extender (16.5mm length)","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eM48-M48 Extender (16.5mm Length): Essential for Astrophotography Component Integration\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eM48-M48 Extender (16.5mm Length) is a versatile and practical tool designed to enhance your astrophotography setup. This extender is perfect for connecting and adjusting the spacing between M48 threaded components, making it a vital accessory for achieving the ideal optical path in your imaging system.\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eKey Features:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-mce-fragment=\"1\"\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003e16.5mm Extension Length:\u003c\/strong\u003e Provides the necessary spacing for optimal component alignment in astrophotography setups.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eM48 to M48 Thread Compatibility:\u003c\/strong\u003e Designed for seamless connection between M48 male and female threaded equipment.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eRobust Construction:\u003c\/strong\u003e Made with durable materials for long-term reliability and performance.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eEasy to Install:\u003c\/strong\u003e Simple and efficient screw-in mechanism for quick setup adjustments.\u003c\/li\u003e\n\u003cli data-mce-fragment=\"1\"\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eEnhances Imaging System:\u003c\/strong\u003e Ideal for a variety of astrophotography configurations, improving overall system integration and performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-mce-fragment=\"1\"\u003eThe M48-M48 Extender (16.5mm Length) is an indispensable accessory for astrophotographers looking to fine-tune their equipment setup, ensuring precision and ease in their celestial imaging pursuits.\u003c\/p\u003e","brand":"AWT","offers":[{"title":"Default Title","offer_id":49829277270336,"sku":"AWT-M48-EXT16.5","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0717\/9904\/6464\/files\/zwo-m48-ext16.5_1_5e7649a3-4455-4723-b0e1-25447f47114f.jpg?v=1702569533"},{"product_id":"m42-m48-extender-16-5mm-length","title":"M42-M48 extender (16.5mm length)","description":"\u003cp data-mce-fragment=\"1\"\u003e\u003cstrong\u003eM42-M48 Extender (16.5mm Length): Streamline Your Astrophotography Connections\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-mce-fragment=\"1\"\u003eOptimize your astrophotography setup with the M42-M48 Extender, a crucial accessory designed to bridge M42 and M48 connections with precision. 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