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Altair 2" DualBand 4nm COMBO(2 Filters)
$1,049.99
Altair Dual-Band ULTRA Oiii / Sii narrowband filter with extremely tight 4nm FWHM Bandpass. This filter is designed to be the perfect complement to the Altair 4nm Ha Oiii filter....
Altair Astro 115mm Aperture TRIBAND D-ERF (120mm filter with housing cell)
$649.99
Altair Astro 115mm Aperture TRIBAND D-ERF (120mm Filter with Housing Cell) Comprehensive Solar Protection: Specifically designed to safeguard your telescope and solar imaging equipment from excessive heat during solar observation...
Altair Astro 115mm Aperture Hydrogen Alpha D-ERF (120mm filter with housing cell)
$529.00
Altair 115mm Aperture Hydrogen Alpha D-ERF Solar Filter Advanced Solar Protection: The Altair Dichroic Solar Energy Rejection Filter (D-ERF) is designed to protect telescopes and solar imaging equipment from excessive...
Altair Astro 160mm TRIBAND D-ERF Solar Energy Rejection Filter (Hydrogen Alpha plus CaK CaH)
$1,419.99
Altair Astro 160mm TRIBAND D-ERF Solar Energy Rejection Filter Advanced Solar Protection: Designed to protect telescopes and solar imaging equipment from excessive heat build-up, specifically when using Daystar Hydrogen Alpha...
Tele Vue Optics OIII Filters
$125.00 – $227.00
Tele Vue Optics OIII Filters: Bandmate Series Key Features: Precision Manufacturing: Filters are crafted with strict quality control, ensuring consistent performance. German-Sourced Materials: High-quality materials from Germany guarantee durability and...
Altair 2nm G-Band Solar Contrast Filter - 2" 430.3nm
$319.99
IMPORTANT SAFETY INFORMATION: DO NOT USE THIS FILTER FOR DIRECT SOLAR OBSERVATION! Must be used together with a professional solar filter film or glass type, or Hershel Wedge with Max. 0.024%...
Celestron Oxygen III Narrowband Filter - 2"
$124.95
The Celestron Oxygen III Narrowband Filter - 2" is an essential accessory for astronomers and astrophotographers. Specifically designed to isolate the two doubly-ionized oxygen lines (496 and 501 nm lines)...