Filters

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DayStar Daystar ATM H-Alpha 0.7A Solar Filter (Pre-owned)
Daystar ATM H-Alpha 0.7A Solar Filter (Pre-owned)
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Daystar ATM H-Alpha 0.7A Solar Filter (Pre-owned)
$3,000.00
Lumicon Lumicon 1.25 Deep Sky Light Pollution Nebula Filter
The 1.25″ Deep Sky is Lumicon’s most popular nebula filter. It blocks all high & low pressure mercury and sodium vapor lamp light, neon lights and airglow, while transmitting the rest of the visible spectrum.
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Lumicon 1.25 Deep Sky Light Pollution Nebula Filter
$242.00
Hutech CLIP IDAS Nebula Clip Filter LPS-V4 - for Canon EOS DSLR -
Especially designed for DSLR and single-shot CCD colour cameras
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Hutech CLIP IDAS Nebula Clip Filter LPS-V4 - for Canon EOS DSLR -
$159.99
300mm Off-Axis ERF Filter (Pre-Owned)
300mm Off-Axis ERF Filter (Pre-Owned)
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300mm Off-Axis ERF Filter (Pre-Owned)
$150.00
Astrozap Flexi-Heat Dew Shield for 11” Schmidt-Cassegrain Telescopes
Astrozap Flexi-Heat Dew Shield for 11” Schmidt-Cassegrain Telescopes
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Astrozap Flexi-Heat Dew Shield for 11” Schmidt-Cassegrain Telescopes
$128.90
Lumicon Vintage Lumicon 1.25 OIII Oxygen III Light Pollution Nebula Filter (Pre-owned)
This filter is highly regarded for its ability to enhance contrast and visibility of nebulae and other deep-sky objects from light-polluted urban areas, making it an essential tool for astronomers seeking clearer views of celestial phenomena.
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Vintage Lumicon 1.25 OIII Oxygen III Light Pollution Nebula Filter (Pre-owned)
$120.00
Lumicon Vintage Lumicon 1.25 OIII Oxygen III Light Pollution Nebula Filter (Pre-owned)
The legendary Lumicon 1.25″ OIII narrow band-pass filter isolates just the two doubly ionized oxygen lines (496 and 501nm lines) emitted by diffuse, planetary and extremely faint nebulae.
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Vintage Lumicon 1.25 OIII Oxygen III Light Pollution Nebula Filter (Pre-owned)
$120.00
Lumicon Lumicon H-Alpha Night Sky 1.25 inch Filter (Pre-owned)
The Lumicon H-Alpha Night Sky 1.25-inch Filter is a specialized optical filter designed for enhancing observations and astrophotography under dark skies.
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Lumicon H-Alpha Night Sky 1.25 inch Filter (Pre-owned)
$99.95
Lumicon Vintage Lumicon 1.25" Deep Sky Telescope Filter (Pre-owned)
The Vintage Lumicon 1.25" Deep Sky Telescope Filter is designed to optimize the viewing experience of deep-sky objects by enhancing contrast, reducing light pollution effects.
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Vintage Lumicon 1.25" Deep Sky Telescope Filter (Pre-owned)
$99.95
Lumicon Lumicon 2" H-Alpha Nebula Filter (Pre-owned)
Lens filter held in excellent condition.
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Lumicon 2" H-Alpha Nebula Filter (Pre-owned)
$99.95
Arcturus Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 2"
Get Great Nebula Images Under City Lights or a Full Moon with the Arcturus Hydrogen-Alpha Narrowband Astrophotography Filter!
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Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 2"
$99.95
Arcturus Arcturus Hydrogen-Beta Filter 2"
A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.
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Arcturus Hydrogen-Beta Filter 2"
$99.95
Lumicon Vintage Lumicon 1.25 UHC Ultra High Contrast Light Pollution Nebula Filter (Pre-owned)
A magnificent UHC Nebula Filter, built to give you the ultimate viewing experience.
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Vintage Lumicon 1.25 UHC Ultra High Contrast Light Pollution Nebula Filter (Pre-owned)
$95.00
Lumicon Vintage Lumicon 1.25 Deep-Sky Light Pollution Nebula Filter (Pre-owned)
A magnificent pre-owned filter, built for a glorious gazer such as YOU.
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Vintage Lumicon 1.25 Deep-Sky Light Pollution Nebula Filter (Pre-owned)
$95.00
Orion Orion Deluxe Stargazer's 1.25" Filter Set- (Pre-owned)
The Orion Deluxe Stargazer's 1.25" Filter Set is a must-have for astronomy enthusiasts, offering four precision-crafted filters to optimize your view of celestial objects.
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Orion Deluxe Stargazer's 1.25" Filter Set- (Pre-owned)
$75.00
Orion Orion H-Beta 2" Eyepiece Filter (Pre-owned)
Orion H-Beta 2" Eyepiece Filter (Pre-owned)
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Orion H-Beta 2" Eyepiece Filter (Pre-owned)
$69.99
Arcturus Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 1.25 (LIMITED QUANTITIES)
Get Great Nebula Images Under City Lights or a Full Moon with the Arcturus Hydrogen-Alpha Narrowband Astrophotography Filter!
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Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 1.25 (LIMITED QUANTITIES)
$59.95
Arcturus Arcturus Hydrogen-Beta Filter 1.25 (LIMITED QUANTITIES)
A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.
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Arcturus Hydrogen-Beta Filter 1.25 (LIMITED QUANTITIES)
$59.95
Baader Violet Multiband 1.25"
Baader Violet Multiband 1.25"
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Baader Violet Multiband 1.25"
$59.00
Meade Meade Sky Filter Dust Seal 1A #07288 (Pre-owned)
Glass is clean. Threads have some wear markings but it still threads just fine
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Meade Sky Filter Dust Seal 1A #07288 (Pre-owned)
$50.00
Broadband Light Pollution Filter 1.25"
Broadband Light Pollution Filter 1.25"
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Broadband Light Pollution Filter 1.25"
$49.99
Zhumell Zhumell Telescope UHC Light Pollution Filter 1.25 inch
The Zhumell 1.25” UHC (Ultra High Contrast) Light Pollution Filter is designed to improve contrast and visibility of deep-sky objects by reducing unwanted artificial light. This filter helps reveal more detail in nebulae, galaxies, and star clusters.
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Zhumell Telescope UHC Light Pollution Filter 1.25 inch
$49.00
Svbony SVBONY Telescope Filter 1.25 inches UHC Filter
UHC filters or light pollution reduction filters are designed to selectively r
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SVBONY Telescope Filter 1.25 inches UHC Filter
$49.00
Celestron Polarizing Filter Set 1.25" (Pre-owned)
Celestron Polarizing Filter Set 1.25"
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Celestron Polarizing Filter Set 1.25" (Pre-owned)
$45.00