Binoculars & Telescopes › Alpine › Filter

Free Express Shipping! Alpine Astronomical Baader Fringe Killer Filter (1.25")... Free Express Shipping! Alpine Astronomical Baader Fringe Killer Filter (1.25") Blocks Defocused Blue Light, Eliminates Near-IR Red Light above 700nm, Helps to Reveal Lunar/Planetary Details more

Free Express Shipping! Alpine Astronomical Baader UFC Base/Filter Chamber Part... Free Express Shipping! Alpine Astronomical Baader UFC Base/Filter Chamber Part of the UFC Filter Changer System, Accepts an Array of Filter Sliders, Optional Adapters for a Variety of Uses more

[Pre Order - allow extra time] Alpine Astronomical Baader 0.6 Neutral Density ... [Pre Order - allow extra time] Alpine Astronomical Baader 0.6 Neutral Density Filter (1.25") Ideal for Lunar Observation, Phantom Group Optical Coatings, Fits 1.25" Eyepieces and Accessories, 0.6 Optical Density, 25% Transmission, 4 Reduction Factor,... more

Free Express Shipping! Alpine Astronomical Baader Yellow Colored Bandpass Eyep... Free Express Shipping! Alpine Astronomical Baader Yellow Colored Bandpass Eyepiece Filter (1.25") Planetary Viewing/Imaging Filter, 495nm Wavelength Bandpass, 1.25" Eyepiece Threads, 7-Layer Anti-Reflection Multi-Coated, No Reflections, Scatter or... more

[Pre Order - allow extra time] Alpine Astronomical Baader U-Venus Filter (2") ... [Pre Order - allow extra time] Alpine Astronomical Baader U-Venus Filter (2") 320-380nm Bandpass, Designed for Imaging Venus, Dielectric Multi-Coated Schott Glass, Standard 2" Eyepiece Filter Housing, Recommended for 8" Aperture OTAs more

Free Express Shipping! Alpine Astronomical Baader Double Polarizing Filter (1.... Free Express Shipping! Alpine Astronomical Baader Double Polarizing Filter (1.25") Double Rotating Filter Cells, Ideal for Lunar & Planetary Viewing, Enhances Overall Image Contrast, Standard 1.25" Eyepiece Filter Threads, Allows Solar Viewing with... more

Use the Alpine Astronomical Baader 0.9 Neutral Density Filter to reduce the am... Use the Alpine Astronomical Baader 0.9 Neutral Density Filter to reduce the amount of light coming into your eye during lunar observation and improve the view and contrast. The lens surfaces are fully multi-coated with Phantom Group seven-layer optical... more

[Pre Order - allow extra time] Alpine Astronomical Alpine Astronomical Baader ... [Pre Order - allow extra time] Alpine Astronomical Alpine Astronomical Baader Single Polarizing Filter (2") Ideal for Lunar & Planetary Viewing, Enhances Overall Image Contrast, Standard 2" Eyepiece Filter Threads, Use Solar Viewing with Proper Filters more

Free Express Shipping! Alpine Astronomical Baader 685nm IR-Pass Filter (1.25")... Free Express Shipping! Alpine Astronomical Baader 685nm IR-Pass Filter (1.25") Ideal for Planetary Viewing and Imaging, View in the Long Deep-Red Wavelength, IR Phantom-Group Optical Multi-Coatings, Passes the Narrow 685nm Bandwidth, Fits Standard... more

Free Express Shipping! Alpine Astronomical Baader Contrast Booster Filter (1.2... Free Express Shipping! Alpine Astronomical Baader Contrast Booster Filter (1.25") Ideal for Lunar and Planetary Viewing, Boosts Contrast and Sharpness, Natural Light Pollution Blocking, Eliminates False Colors, Removes the Common Bluish "Hue", Both... more

Free Express Shipping! Alpine Astronomical Baader Neodymium Moon & Skyglow Fil... Free Express Shipping! Alpine Astronomical Baader Neodymium Moon & Skyglow Filter (2") Improves Color and Contrst, UV/IR Luminance Blocking Coating, Filters Streetlights and Moon Skyglow, Isolates Red, Green, and Blue Colors, Reveals Enhanced Natural... more

Free Express Shipping! Alpine Astronomical Baader UFC Filter Slider for 2" Eye... Free Express Shipping! Alpine Astronomical Baader UFC Filter Slider for 2" Eyepiece Filters Part of the UFC Filter Changer System, For Use with Optional UFC Filter Base, Enables Fast Filter Changes, Secures Magnetically to Base more

[Pre Order - allow extra time] Alpine Astronomical Baader 0.9 Neutral Density ... [Pre Order - allow extra time] Alpine Astronomical Baader 0.9 Neutral Density Filter (2") Ideal for Lunar Observation, Phantom Group Optical Coatings, Fits 2" Eyepieces and Accessories, 0.9 Optical Density, 12.5% Transmission, 8 Reduction Factor,... more

[Pre Order - allow extra time] Alpine Astronomical Baader H-alpha Narrowband F... [Pre Order - allow extra time] Alpine Astronomical Baader H-alpha Narrowband Filter (2") 6.5nm FWHM, Ideal from f/10 to f/3.5, Optimized for CMOS, Suitable for CCD, Reflex-Blocker Hard Coated, Life-Coat Sealed Coating Edges more

[Pre Order - allow extra time] Alpine Astronomical Baader CMOS-Optimized UV/IR... [Pre Order - allow extra time] Alpine Astronomical Baader CMOS-Optimized UV/IR Bandpass L Filter (2" Eyepiece Filter) UV/IR Cut: 420-685nm, Optimized for CMOS, Suitable for CCD, Reflex-Blocker Hard Coated, Life-Coat Sealed Coating Edges more

This 1.25 Eyepiece Filter Baader UBVRI Bessel V Filter from Alpine Astronomica... This 1.25 Eyepiece Filter Baader UBVRI Bessel V Filter from Alpine Astronomical is a classic photometric filter with transmission according to Bessel and parfocal with all Baader filters of the same size. This daylight-proof filter uses ion-beam... more

Free Express Shipping! Alpine Astronomical Baader Solar Continuum Filter 7.5nm... Free Express Shipping! Alpine Astronomical Baader Solar Continuum Filter 7.5nm (540nm, 2") Enhances Contrast in Solar Viewing, Filter Centered on 540nm Wavelength, Narrow 7.5nm Half-Bandpass, AR-Coated, Planeoptically Polished more

Free Express Shipping! Alpine Astronomical Baader UHC-L Ultra-L-Booster Nebula... Free Express Shipping! Alpine Astronomical Baader UHC-L Ultra-L-Booster Nebula Filter (1.25" Eyepiece) Blocks City Light Pollution, Increases Contrast of Nebulae & Comets, CMOS-Optimized, Ideal for Astrophotography & Observation, Reflex-Blocker... more

Free Express Shipping! Alpine Astronomical Baader UHC-L Ultra-L-Booster Nebula... Free Express Shipping! Alpine Astronomical Baader UHC-L Ultra-L-Booster Nebula Filter (2" Eyepiece) Blocks City Light Pollution, Increases Contrast of Nebulae & Comets, CMOS-Optimized, Ideal for Astrophotography & Observation, Reflex-Blocker Coatings... more

Free Express Shipping! Alpine Astronomical Baader Solar Continuum Filter 7.5nm... Free Express Shipping! Alpine Astronomical Baader Solar Continuum Filter 7.5nm (540nm, 1.25") Enhances Contrast in Solar Viewing, Filter Centered on 540nm Wavelength, Narrow 7.5nm Half-Bandpass, AR-Coated, Planeoptically Polished more