Filters

Antares 1.25" 5-Position Manual Filter Wheel This filter wheel will accept (5) 1.25" filters and has fittings for both 1.25" visual and M42 camer...

Daystar Combo Quark 2.8X Telecentric Barlow This  brand new QUARK optimized accessories is designed to fit our classic Combo Quark Hydrogen Alpha F...

Daystar Combo Quark 4.3X Telecentric Barlow This  brand new QUARK optimized accessories is designed to fit our classic Combo Quark Hydrogen Alpha F...

Antares Filter Neutral Density 13% - USED This filter is in excellent condition. Neutral density filters can reduce brightness across the visu...

Baader UBVRI Bessel Filters V-Filter – Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filter...

Explore Scientific Nebula Filter UHC 2.0-inch   Explore Scientific Nebula Filter 2.0" UHC Range from 458nm to 508nm with peak at 488nm. Transmissio...

Explore Scientific Nebula Filter CLS 1.25-inch   Explore Scientific Nebula Filter 1.25" CLS Range from 436nm to 536nm with peak at 488nm. Transmiss...

Explore Scientific Nebula Filter UHC 1.25-inch   Explore Scientific Nebula Filter 1.25" UHC Range from 458nm to 508nm with peak at 488nm. Transmiss...

Baader AstroSolar Spotting Scope Filter OD 5.0 (50mm - 150mm) This family of filters offers a stable and rigid solution for all spotting scopes, ca...

Shelyak Alpy 200 Spectroscope The little brother of the ALPY 600 for spectra of very faint objects with a resolution of around R=130 ! The Al...

Seymour Hyperion Binocular Solar Filters (Pair) This pair of premium solar filters are safe for solar viewing when mounted on binoculars. They are ...

Shelyak High Voltage Power ConnectorThis connector is to be used with the high voltage power supply (ref. PF0082) and allows you to make a specific...

Shelyak Alpy 600 & UVEX slit 10µm, 35µm, or 50µm slit, compatible with ALPY 600 and UVEX spectroscopes Technical Specifications  10µm slit 35µ...

Astronomik MC-clear Filter This Multicoated (MC) glass serves as dust protector or to keep your system parfocal with other Astronomik filters.  Thi...

Astronomik SII 6nm CCD Filters This SII-CCD Filter is suitable for imaging of SII-regions from observation sites with light pollution and from dark...

Sightron LPS-C1 M48 Filter (2") (LPS) Light Pollution Suppression Filter Effectively suppressing white LED sky glow Maintains the good color bal...

Shelyak Power supply 12V/3A  12V (3A) power supply for video camera and our electronic modules (Lhires III, LISA calibration module, Alpy calibrati...

Shelyak UVEZ Motors     The UVEX is now motorized, and can therefore be used remotely. Motorization:Select the central wavelength of your spectra, ...

Shelyak Star'ex Low Resolution Optical Kit Star’Ex Low Resolution (LR) optical kit: all the optical elements to make your own Star’Ex LR instrument...

Shelyak Star'ex high resolution optical kit  With Star’Ex (Star’Explorer), create your first High Resolution (HR) spectrograph yourself to observe ...

Shelyak Handheld Spectroscope  This visual handheld spectroscope is a 115mm long tube with a very precise entrance slit which provides a very good ...

Shelyak LHIRES III The Lhires III is THE standard High Resolution reference spectroscopy.Gain access to the smallest details in the spectral lines ...

SVBONY SV132 1.25'' H-Beta 25nm Light Pollution Filter SV132 H-Beta eyepiece filter makes it possible to view the elusive Horsehead, California, a...

Shelyak Alpy 600 The Alpy 600 and Demetra software (developed by Shelyak Instrument for the ALPY 600 spectrograph) will allow you to produce spectr...

Celestron 1.25" UHC/LPR Filter Our 1-1/4" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wa...

Antlia Imaging Herschel Wedge with 35mm Prism and 1.25'' Cak 3nm Solar Filter The Antlia Solar Wedge (Herschel Wedge design) replaces the standard ...

Celestron 2" UHC/LPR Filter Our 2" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wavelengt...

Askar Color Magic 3nm Duo-Narrowband Filter For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfe...

Antlia IR Pass 850nm planetary 1.25" filter The Antlia IR Pass 850nm filter is an absorptive filter that allows infrared light with wavelengths of ...

ZWO Methane CH4 Filter 1.25" The ZWO Methane CH4 Filter 1.25″ is a special filter for photographic use. Its FWHM is 20 nm which is suitable for mos...

ZWO AR Protective Window for ASI ZWO D21 AR protect window Technical Parameter: Diameter: 21mm Type: AR window Thickness: 1.1mm Flatness: 1/4 λ Pro...

Tele Vue Bandmate OIII Filter The Tele Vue Bandmate OIII Filter passes light from doubly ionized oxygen atoms. As such, it is great for viewing pla...