Telescope Filters

Astronomical Telescope Adjustable Solar Filter for Sun Observing fits 50-94mm

75mm clear aperture in aluminum cell.

Optolong 1.25" L-eNhance Light Pollution Reduction Imaging Filter

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).

DayStar Camera Quark Ha Solar Filter w Canon Mount Chromosphere Model DS G2U

Check item specifics and photos to ensure you make the perfect choice.

SVBONY SV220 Duo-Band Dual Narrowband Filter 2” 7nm W9172B

Used for less than a year, ~ 8 imaging sessions. Selling as I upgraded to a mono setup. Its in good condition - as pictures show no defects or scratches. Attached is a photo I took with a canon 1300d and this filter. It does a really good job.

ZWO Filter Drawer with Spare Filters and Holder

This is a ZWO 2-inch filter drawer with M48 female (telescope side) M42 male (camera side) threads for 2-inch mounted filters. It comes with three total filter slots as well as a 3D-printed filter slot holder from Buckeye Stargazer. Additionally, it will come with two M42 end/dust caps for the camera end that I no longer need. If you would like additional information and/or pictures, please feel free to contact me.

Lumicon UHC Ultra High Contrast Filter for 1.25” Eyepieces - Lot of Two

Lot of Two filters - they may be different types These are eyepiece filters that screw into 1.25" tubes Lumicon nebula filters in excellent condition No haze etc.

Meade MY SKY Personal Guide for Sky Exploration Works Identify planets stars

Your personal guide for sky exploration. Point, shoot & explore. This has batteries in it, see pics, it powers on and the screen is clear.

Baader ASSF 80 Solar Filter

Everything in the sale is shown in the photos.

ZWO EFW-5x2-25 filter wheel

Lumicon 2" UHC Narrowband Telescope Filter Deep-Sky Nebula Dobsonian USA

This is a Lumicon ultra high contrast narrowband visual filter designed to fit onto 2" eyepieces. Made around 2000. Includes case. Includes a case.

Tele Vue Bandmate Type 2 O-III Filter - 2" # B2O-0200 Excellent Condition

This filter is specifically designed to enhance the viewing experience when observing with a Type 2 O-III filter.

Orion #23 Orange 1.25” Telescope Filter – Planetary Contrast – With Case

Boost your planetary viewing experience with this Orion #23 Orange Telescope Filter. Designed to fit standard 1.25” eyepieces, this filter enhances contrast and surface detail, making it easier to observe planets like Jupiter, Saturn, and Mars. • Brand: Orion • Filter Type: #23 Orange color filter • Size: 1.25” • Function: Enhances cloud bands, polar regions, and surface features on planets • Condition: Pre-owned, excellent. Glass is clear, free of scratches, and comes in protective hard case (see photos). Perfect accessory for amateur astronomers seeking sharper planetary detail at the eyepiece.

ZWO 1.25in Duo-Band Filter Black Aluminum Cut Foam Lining for Telescopes

ZWO 1.25in Duo-Band Filter Black Aluminum Cut Foam Lining for Telescopes

Celestron 2 in Telescope Filter Aluminum Black/Silver Universal Fit 1000-5

Celestron 2 in Telescope Filter Aluminum Black/Silver Universal Fit 1000-5

Orion Japan Telescope Filters Orange Yellow No 1 Green Yellow Moon Sky glow 80a

Various filters, comes as pictured

Orion #12 Yellow 1.25” Telescope Filter – Planetary Contrast – With Case

Enhance planetary detail and contrast with this Orion #12 Yellow Telescope Filter. Designed to fit standard 1.25” eyepieces, this filter helps bring out finer details when observing planets like Mars, Jupiter, and Saturn. • Brand: Orion • Type: Color filter • Size: 1.25” • Filter: #12 Yellow • Function: Improves contrast of planetary features, enhances cloud bands and surface details • Condition: Pre-owned, excellent. Filter glass is clean, comes in protective case (see photos). A must-have accessory for amateur astronomers looking to maximize detail in their planetary viewing.

Orion #25 Red 1.25" Telescope Filter Planetary Contrast w/ Case

Item: Orion #25 Red Telescope Filter Size: 1.25" Type: Planetary Contrast Filter Condition • Excellent preowned condition • Light signs of normal handling only • Glass appears clear with no cracks noted Included • Orion #25 Red 1.25" filter • Protective storage case Compatibility • Fits standard 1.25" eyepieces

Orion #80A Blue 1.25” Telescope Filter – Planetary Contrast – With Case

Improve your planetary viewing with this Orion #80A Blue Telescope Filter. Designed for standard 1.25” eyepieces, this filter enhances contrast and brings out fine details when observing Jupiter, Saturn, and the Moon. • Brand: Orion • Type: Color filter • Size: 1.25” • Filter: #80A Blue • Function: Enhances planetary cloud bands, increases contrast, and sharpens lunar features • Condition: Pre-owned, excellent. Glass is clean and clear, includes original protective case (see photos). A must-have accessory for anyone looking to maximize planetary detail in their telescope setup.

Astromania 1.25" Multiple 5-Position Filter Wheel For Telescope

The Astromania 1.25" Multiple 5-Position Filter Wheel is a high-quality accessory designed for telescopes. This filter wheel allows you to easily switch between up to 5 different camera lens filters, providing versatility for capturing different images with ease. With free express shipping in the United States, this product offers convenience and efficiency for telescope enthusiasts looking to enhance their viewing experience.

Optolong 2” H-Alpha 7nm Mint Condition

Mint condition.

Daystar Quark Chromosphere Solar Telescope Eyepiece DSZ4C

Selling a used Daystar Quark chromosphere solar filter for refractors. The item has seen very light use and it is excellent condition. Comes with the original box and usb power cable. I’m also including a used ZWO 1.25” IR/UV cutoff filter. Note: refractors above 80mm require UV/IR cutoff filter and ERF above 120mm.

SVBONY UHC Telescope Eyepiece Filters Ultra High Contrast Sky Light Pollution -

The SVBONY UHC Telescope Eyepiece Filters are designed to enhance the viewing experience by reducing light pollution and increasing contrast in the sky. Made of high-quality aluminum, these filters are compatible with universal telescopes and binoculars. With a size of 2.0 inches and a multicolor design, these filters provide clear and detailed views of celestial objects. The features included in this product make it a valuable accessory for any astronomy enthusiast looking to improve their viewing conditions.

STC MS clip in astronomy filter for olympus m43 camera

STC MS clip in astronomy filter for Olympus m43.

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.

Celestron Filter 1-1/4” Eyepiece Filter 94118-15

The Celestron Filter 1-1/4" Eyepiece Filter 94118-15 is a colored filter designed for telescopes with a 1.25 inch eyepiece size. This filter is compatible with universal telescope series and enhances the viewing experience by filtering out specific wavelengths of light to improve contrast and clarity. Manufactured by the trusted brand Celestron, this eyepiece filter is reliable and high-quality for enhancing your telescope observations. Filter is blue in color with no sign of damage. Comes in original box with instructions.

Optolong L-ultimate dual bandpass filter 2" for astrophotography

The L-ultimate drastically reduces light pollution allowing only Ha and Oiii to pass, bringing out the details of nebulae.

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.

Lumicon Minus Violet Filter 58mm Original Case! Perfect lens and threads

The Lumicon Minus Violet Filter is a high-quality telescope filter designed for nebular observations. With a 58mm size and a universal compatibility, it is suitable for a wide range of telescopes and binoculars. Made in the United States by the trusted brand Lumicon, this filter ensures excellent lens quality and precise threads for a perfect fit. It comes in its original case for easy storage and transportation, making it a convenient and reliable accessory for any telescope enthusiast.

Lumicon 1.25" UHC Ultra High Contrast Nebula Filter Hydrogen-Beta Oxygen III

The Lumicon 1.25" UHC Ultra High Contrast Nebula Filter is designed specifically for observing nebulas, providing enhanced contrast and color saturation to bring out the details and beauty of these celestial objects.

Thousand Oaks Optical LP-3 Oxygen III O-III Filter 2" Telescope Filter w/ Box

Oxygen III filters are used to improve contrast when observing manyplanetary nebulae, emission nebulae, and other deep-sky objects that emit strongly in the O-III wavelength. Thousand Oaks describes its LP-3 Oxygen filter as a nebula filter.

Vintage Celestron Telescope Filter Set #56 #12 #25 ND .6 Japan 1.25" w/ Box

• Original Celestron storage box. • No. 56 Green Filter – Enhances contrast on Jupiter cloud bands and lunar features.

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!

Lumicon 72mm H-Alpha Night Sky Filter

This is a Lumicon 72mm H-Alpha Night Sky filter kept in plastic case. Lumicon 72mm Night Sky Hydrogen-Alpha Filter. Lumicon 72mm Night Sky Hydrogen-Alpha Filter is ideal for black & white deep sky photography.

2" L-Enhance Dual Narrowband Light Pollution Filter (H-Alpha and H-Beta/O-III)

Used in protected filter wheel.

Set of 2: GSO 1.25" Color/Planetary Filters - #80A Blue, #21 Red

Set of 2: GSO 1.25" Color/Planetary Filters. Used, in good condition.

BAADER 1 1/4" UHC-S / L-Booster Filter 2458275

The BAADER 1 1/4" UHC-S / L-Booster Filter 2458275 is a high-quality telescope filter designed for Baader telescopes. Made in Germany, this filter is compatible with a universal series of telescopes and binoculars. The UHC-S filter enhances contrast and reduces glare, making it ideal for catadioptric and reflector telescopes. With its precise design, this filter is a valuable addition to any astronomer's equipment.

Baader Planetarium 2" Semi-APO Filter # FSAPO-2 2458399

The Baader Planetarium 2" Semi-APO Filter # FSAPO-2 is a high-quality telescope filter designed by Baader Planetarium. With a size of 2.0 inches, this filter is specifically crafted to enhance the performance of telescopes and binoculars, allowing for clearer and sharper images. Perfect for photography and astronomy enthusiasts, this filter is a reliable and essential accessory for exploring the wonders of the universe.

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

High Point #80A Blue Telescope Filter 1.25" Eyepiece Filter w/ Case Taiwan

The High Point #80A Blue Telescope Filter is a universal 1.25" eyepiece filter designed for telescopes. Made of aluminum and featuring a #80A blue color, this filter kit by High Point is compatible with various telescope brands and series. The product comes with a protective case for easy storage and transportation. Perfect for enhancing the viewing experience of your telescope, this filter is a must-have accessory for any stargazer looking to filter out unwanted light and improve contrast.