Tele Vue Optics TV-NP101is OTA:

Unmatched Performance in APO Refractors

• 30 Years of Excellence: Tele Vue has consistently led in developing APO refractors and eyepieces, reaching the pinnacle of performance.
• Renowned Quality: Celebrated in the Backyard Astronomer's Guide for unrivaled optics, and chosen by Sky and Telescope for their significant SBIG STL11000 CCD camera review.
• Advanced "is" Versions: The Tele Vue-60, NP101, and NP127 "is" versions maintain exceptional wide field and planetary visual capabilities, enhanced for easier and more flexible imaging.
• Optical Perfection for Imaging: Redesigned to optimally serve up to 50mm diagonal chips without compromising visual performance.
• Imaging System Scope Capabilities: Includes Focusmate Driver and Digital Indicator Kit, ideal for DSLR cameras on mounts like the Vixen Sphinx.
• Redesigned Optical Systems: The NP101 (540mm, f/5.4, 4") and NP127 (660mm, f/5.2, 5") feature 4-element systems with larger rear lens groups to minimize vignetting.
• Larger Focuser and Draw Tube: A new 3" front aperture and 2.4" rear aperture focuser eliminates light cone restrictions, capable of holding 12 lbs. while offering fine focusing control.
• Versatile and Precise Focusing: Quick transition from visual to imaging operation with full camera rotation, plus residual focal plane tilt correction and repeatable focus measurement capability.
• Innovative Imaging Insert Ring: Ensures squareness to the optical axis with three lock screws and compatibility with Tele Vue's Imaging System accessories.
• Focusmate 10:1 Focuser and Accessories: Offers ultra-sensitive adjustment, measurable with an optional Digital Micrometer Kit, and electronic motor control with the Focusmate Driver.
• Tele Vue's Commitment to Quality: Continues to create visual and imaging instruments that exceed expectations, backed by dedicated local machinists and in-house staff.

Specifications

What's in the Box?

• Enlarged focuser with 3" entrance aperture and 2.4" exit aperture
• Focuser body has brass clamp ring with 2-lock knobs
• Accessory end-ring with tilt capability and 3-lock knobs
• Imaging insert threaded for Imaging System components.
• 2" accessory insert for visual or other 2" accessories
• Focusmate dual-speed focuser 10:1
• Sliding metal dew shield
• Screw-on metal lens cover
• Hard-shell carry case