Filters

DayStar Daystar ATM H-Alpha 0.7A Solar Filter (Pre-owned)

Filters with 0.7 Ångstrom bandwidths will reveal prominences in high contrast and occasionally, surface texture. Prominences are generally larger with 0.7Å filters than in narrower bandwidths.

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Daystar ATM H-Alpha 0.7A Solar Filter (Pre-owned)

$3,000.00

Astrodon Tru-Balance H-a CCD Filter 5nm FWHM for 656.3nm 36mm diameter

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Astrodon Tru-Balance H-a CCD Filter 5nm FWHM for 656.3nm 36mm diameter

$620.00

Astrodon 3nm SII filter 1.25 Inch Mounted

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Astrodon 3nm SII filter 1.25 Inch Mounted

$620.00

Astrodon 3nm OIII filter 1.25 Inch Mounted

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Astrodon 3nm OIII filter 1.25 Inch Mounted

$620.00

Astrodon E-Series Gen 2 Green Filter

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Astrodon E-Series Gen 2 Green Filter

$309.00

Astrodon E-Series Gen 2 Blue Filter

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Astrodon E-Series Gen 2 Blue Filter

$309.00

Astrodon Tru-Balance Luminance CCD Filter for E- and I-Series 36mm Unmounted

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Astrodon Tru-Balance Luminance CCD Filter for E- and I-Series 36mm Unmounted

$295.00

Lumicon Lumicon Vintage 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 Vintage 1.25 Deep Sky Light Pollution Nebula Filter

$242.00

Vaonis CLS Filter for Vespera Robotic Smart Telescope - ST50-CLS

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Vaonis CLS Filter for Vespera Robotic Smart Telescope - ST50-CLS

$229.00

Optolong Optolong 2" L-eXtreme Dual Band 7nm HA/OIII Filter - (Pre-owned)

Elevate your astrophotography with the Optolong 2" L-eXtreme Filter, perfect for bringing deep-sky objects to life.

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Optolong 2" L-eXtreme Dual Band 7nm HA/OIII Filter - (Pre-owned)

$225.00

Vaonis Solar Filter for Vespera Robotic Smart Telescope - ST50-SF

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Vaonis Solar Filter for Vespera Robotic Smart Telescope - ST50-SF

$179.00

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

Astrodon Astrodon Light Pollution Luminance L2P_36R 36mm diameter (Pre-owned)

Pre-owned Astrodon Light Pollution Luminance L2P_36R 36mm diameter

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Astrodon Light Pollution Luminance L2P_36R 36mm diameter (Pre-owned)

$150.00

Daystar Interference Eliminator (T mount)

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Daystar Interference Eliminator (T mount)

$150.00

Astrozap Astrozap Flexi-Heat Dew Shield for 11” Schmidt-Cassegrain Telescopes

Flexible heated dew-shield that fits most 11" Schmidt-Cassegrain Scopes

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Astrozap Flexi-Heat Dew Shield for 11” Schmidt-Cassegrain Telescopes

$128.90

Lumicon Lumicon Vintage Deep-Sky Filter 42mm Male and 48mm Male Threads (T mount to 2 inch) (Pre-owned)

Pre-owned Lumicon Vintage Deep-Sky Filter 42mm Male and 48mm Male Threads (T mount to 2 inch)

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Lumicon Vintage Deep-Sky Filter 42mm Male and 48mm Male Threads (T mount to 2 inch) (Pre-owned)

$125.00

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

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

Vintage Lumicon 1.25inch UHC Filter - New in Box!

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Lumicon 1.25inch UHC Filter (Vintage brand!) New in Box!

$99.95

Astronomik Astronomik UHC Filter - 1.25" Round Mounted (Pre-owned)

Pre-owned Astronomik UHC Filter - 1.25" - Round Mounted

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Astronomik UHC Filter - 1.25" Round Mounted (Pre-owned)

$99.95

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