Telescope Filters
telescope filters — pre-owned
Browse 265 telescope filters — pre-owned on eBay — listings updated every few minutes. All items are pre-owned and sold by eBay sellers directly.

ORION Skyglow Broadband Light Pollution Nebula Filter 1.25
The ORION Skyglow Broadband Filter is designed to reduce light pollution for optimal stargazing experiences. Made by Orion, a trusted brand in telescopes and accessories, this filter is specifically sized at 1.25 inches to fit standard telescope eyepieces. Its broadband design helps to filter out unwanted light sources, enhancing the visibility in the night sky. Perfect for telescope enthusiasts looking to explore the beauty of the cosmos with minimized interference. Comes in a plastic bag, no case. In excellent shape. No offers. If it goes below 24.99, it’s not worth selling. Ebay takes too much of a fee, the post office sucks here, so I have to bring it there. And it’s not worth the time or effort… so if you’re watchibg hoping for a deal later… it isn’t happening

BAADER FRINGE KILLER 2.0 in.
The BAADER Fringe Killer is a 2.0-inch solar filter designed for refractor telescopes. It is compatible with a universal series of telescopes, effectively reducing glare and improving contrast for a better viewing experience. With the trusted BAADER brand behind it, this filter is a reliable accessory for any astronomer looking to enhance their telescope's performance.

DWARFLAB Dwarf II 2 Smart Digital Telescope /Extra Filters & Battery (Light Use)
This listing is for DWARF II Smart Telescope. A compact and innovative smart telescope designed for easy use and portability. Comes with a carrying case, tripod, magnetic filter adapter, rechargeable battery, and additional lens accessories. Ideal for astronomy enthusiasts looking for a high-tech, user-friendly telescope solution. Comes with all original accessories including bag and filters. Additional solar filters and extra battery included. Only lightly used with less than 2 hours total. Christmas gift but not used by older enthusiast wanting older telescope options. Simple to use and very enjoyable!

Orion Japan Telescope Filters Orange Yellow No 1 Green Yellow Moon Sky glow 80a
Various filters, comes as pictured

Astronomik Ha 12nm EOS APS-C CLS CCD Clip-In Filter
💡 Why Astronomik?. Astronomik filters are known worldwide forexceptional optical quality and durability, making them a top choice among astrophotographers. Model: H-Alpha (Ha) 12nm Clip-In Filter. Bandwidth: 12nm – ideal balance of contrast and signal.

Solar Filter Baader Film Metal Cover for Astronomical Telescope ASTF-200

Thousand Oaks Optical Type 2+ Solar Filter 6 Inch.
Thousand Oaks Optical Type 2+ Solar Filter 6 Inch. I can’t say I know anything about these. Looks like glass to me with mirror reflection on both sides.

Orion Solar Filter 4.25" Diameter Astrophotography Astronomy telescope
Nice condition. Please see photos for condition and details. No refunds by seller but guaranteed to be as described. Thanks for looking!!

CELESTRON ASTROSOLAR SOLAR 8" FILTER MODEL 94162
CELESTRON ASTROSOLAR SOLAR 8" FILTER MODEL 94162. GOOD CONDITION

Lumicon Sky Vector II Telescope Computer + Optical Encoder with WARRANTY
You save $9.90

Lumicon UHC Ultra High Contrast Nebula Filter 1.25” Telescope Lens
This is achieved by passing three nebula emission lines - the two doubly ionized oxygen lines (496 and 501nm) and the H-beta line (486nm) - while blocking light-pollution and Sky Glow. The result is superb views of the Orion, Lagoon, Swan and other extended nebulae.

Celestron 10 mm SMA Ocular 1-1/4" # 93372 Wide Angle Lens
Please see photos

4 Orion Lens Filters & Moon Filter 05662 Telescope Lens Filters 08153 eyepiece
Orion 08153 explorer II 6mm eyepiece.

TOKAI (IDAS) LRGB Type3 35.5mm Filters, Set of 4, IR Block Coated JAPAN (#C-075)
This is a very rare, phantom-class filter set from TOKAI (IDAS). It's a set of four LRGB Type3 35.5mm filters with IR Block Coating. Upon a quick look, the filters appear to be in good condition. Round case (as pictured).

Celestron International Solar Skreen Mylar Solar Filter #94138 – Fits C4.5
Celestron International Solar Skreen Mylar Solar Filter #94138 – Fits C4.5 & More High-quality "white light" filter designed to safely observe sunspots, eclipses, and solar transits. Filter is in great condition no scratches or pinholes, plastic housing is sturdy no cracks. Specifics: - Brand: Celestron - Model: 94138 - Type: White Light Solar Filter - Material: Mylar Film - Compatible Telescope: Celestron C4.5 Newtonian, C4 R, FirstScope 102AZ, and others with ~145mm O.D. Filter’s inner diameter measures exactly 5” (127mm) See photos for exact condition of item you will receive.

Spectrum Telescope Film Solar Filter: 3.75" Total Diameter 3.15" Aperture
The Spectrum Telescope Film Solar Filter has a 3.75" total diameter and a 3.15" aperture, making it specifically designed for telescopes. Manufactured by Spectrum Telescope, this filter is made of film material to effectively block out harmful light and enhance the viewing experience. This product is essential for solar observation, ensuring safe and clear viewing of the sun's surface.

3 1.25” Svbony Filters (oiii, UHC, And CLS)
The 3 1.25” SVBONY filters (OIII, UHC, and CLS) are a set of telescope filters designed for enhancing the viewing experience. Made of aluminum, these filters are compatible with universal brands and series, making them versatile for various telescopes. Specifically designed for reflectors, these filters provide specific enhancements for OIII, UHC, and CLS wavelengths, allowing for clearer and more detailed viewing of celestial objects. The unit size of 1.25 inches ensures a secure fit for most telescopes, providing a convenient and effective way to improve telescope performance.

SVBONY SV133 2" 5-Position Filter Wheel - Barely Used
Barely used 2" telescope filter wheel. Slider moves between different positions without issue.

Optolong Oxygen OIII 6.5nm Telescope Astro Filter 1.25
This is an Optolong Oxygen O-III 6.5nm Filter. From a local estate. Includes the filter, original case, info sheet, and box seen above. Nothing else is included.
You save $19.49

Lumicon 2" Deep Sky Filter For Nebulae And Galaxies
The Lumicon 2" Deepsky Filter is specifically designed to enhance the visibility of nebulae and galaxies in telescopes. With a brand known for quality optical products, this filter is 2.0 inches in size, providing a clear and sharp view of deep sky objects. Perfect for astronomy enthusiasts looking to explore the wonders of the universe with their telescope, this filter is a valuable accessory for any stargazing session.

SVBONY SV132 W9102B 2inch Eyepiece Filter H-Beta 25nm Filters
SVBONY 2" H-Beta 25nm Filter. The H-Beta filter is a narrowband filter specially designed for visual inspection. It filters out the interference of other light and can improve the contrast of the nebula.

Thousand Oaks Optical Solar Filter S-4250 #T
How accurate are your shutter counts?.

Orion Skyglow UltraBlockTelescope Filter And Combined Camera Adapter 1.25
Used like new

Thousand Oaks Optical Type 2+ 3.75”
Filter looks to be in very good condition! 3.75in diameter. Please feel free to ask any questions! Thank you for looking!

Celestron Solar Skreen C4.5 Mylar Solar Filter Model 94138 Telescope
Celestron International Solar Skreen Mylar Solar Filter. Model #94138 (C4.5). Local pickup also available in Cleveland, Ohio.

Meade 07288 #1A SCT Visual Back Rear Cell Telescope Skylight Filter Dust Seal
All other rear cell accessories may then be threaded to the #1A filter. We got this hard to find filter in as a trade. It is in excellent condition, has a couple of minor marks on the finish. Note: this only works with SCT scopes - it screws onto the rear cell.

Lumicon Sky Vector ll Computer
Good pre-owned condition. Some light scratches/marks. The battery compartment had light corrosion, but it works properly. See photos. Tested and working. No battery included. Thank you!

Apertura 1.25" Moon Filter
Single Filter, Set, or AccessorySingle Filter. Filter TypeNeutral Density/Moon. Filter Size31.75mm (1.25").

Celestron LPR Telescope Filter 1.25” Light Pollution Reduction With Case

Zhumell 1.25 in Filter No.23A #23A Red Color Telescope Eyepiece Accessory
Zhumell 1.25 in Filter No.23A #23A Red Color Telescope Eyepiece Accessory

Vaonis AC022 Vespera Dual Band Filter for Nebula Photography (Black Exterior)
Designed specifically for Vespera. Ideal for nebula photography. Key Features. Higher-quality image, with sharper stars and finer details. Verified inventory at unbeatable value. Quality and efficiency are our top priorities.

Orion SkyGlow Light Pollution Reduction Filter for Telescope
SCT thread filter, two inch.

Astromania 2" Moon/Skyglow Filter
Up For Sale Is A Pre-Owned Astromania 2" Moon/Skyglow Filter. Item Location: A-2. Don’t worry, we’ll resolve it!
You save $3.00

Orion 1.25" #58 Green Telescope Filter - Made in Japan
Orion #58 1.25" Green Filter - MADE IN JAPAN! Anodized aluminum cells are double-threaded to permit filter stacking for multiple filter use. #58 Green (24% Transmission). We got this gently used filter in as a trade - it is in excellent condition.

Lot of 6 OEM Celestron Telescope Color Filters (Filter Astronomy) 1.25"
Lot of 6 OEM Celestron Telescope Color Filters (Filter Astronomy) 1.25". You get what you see in photos . Thank you!

Orion 1.25" #80A Medium Blue Telescope Filter - Japan
Orion #80A 1.25" Blue Filter - MADE IN JAPAN! Anodized aluminum cells are double-threaded to permit filter stacking for multiple filter use. Details of Jupiter's cloud belts and Great Red Spot.

Orion Star Shoot Deep Space Color Imager II - Made in Canada
The photos represent exactly what you will receive. If it is not pictured, it is not included in the order.
You save $8.72

Astronomik Ha (H Alpha) 12nm CCD 2IN Filter for Astrophotography w/ Case - Used
Used lightly and in excellent condition. Was going to use with broadband imaging for nebulae, but upgraded to Askar D1/D2 dual narrowband filters to maximize signal collection during my infrequent cloud free nights. Comes as pictured with original protective case. Please ask any questions prior to purchasing. Ships USPS Priority Mail, insured, to US addresses only. Thanks for looking!

Telescope 1/4 " inch UHC High Contrast Filter
It's in a Lumicon case but no markings on the filter, with that being said I think it is a generic filter. Locally owned and operated since 1998. If you are in the area stop in and check us out.

II-VI Two-Six Optical Filter Infrared Lens Thermal Lens Reflector Camera
II-VI Two-Six Optical Filter Infrared Lens Thermal Lens Used see photos. Optic measures about 1" OD. SJ