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Optolong Optolong UBVRI Filter Set - 2" Mounted - UBVRI-200
This photometric UBVRI filter set includes five 2" round mounted filters: ultraviolet (U), blue (B), visual (V), red (R), and infrared (I).
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Optolong UBVRI Filter Set - 2" Mounted - UBVRI-200
$920.00
Optolong Optolong Clear Sky Filter - 82mm Round Mounted - CS-82
Introducing the Clear Sky Filter: Optolong's brand-new light pollution filter.
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Optolong Clear Sky Filter - 82mm Round Mounted - CS-82
$229.00
Optolong Optolong OIII 6.5nm Filter 1.25" Mounted
Optolong OIII 6.5nm Filter 1.25" Mounted
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Optolong OIII 6.5nm Filter 1.25" Mounted
$175.00
Optolong Optolong OIII 18nm Filter 2" Mounted
Optolong narrowband OIII filter is designed for nebula observation allowing 18nm bandwidth of light centered on a wavelength of 500nm through, which corresponds to OIII emission lines, and reducing the transmission of certain wavelengths of light, specifi
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Optolong OIII 18nm Filter 2" Mounted
$119.00
Optolong Optolong OIII 6.5nm 2" Mounted #11502
Optolong OIII 6.5nm 2" Mounted #11502
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Optolong OIII 6.5nm 2" Mounted #11502
$249.00
Optolong Optolong OIII 6.5nm 31mm Unmounted #11503
Optolong OIII 6.5nm 31mm Unmounted #11503
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Optolong OIII 6.5nm 31mm Unmounted #11503
$189.00
Optolong Optolong SII 6.5nm 36mm Unmounted #11404
Optolong SII 6.5nm 36mm Unmounted #11404
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Optolong SII 6.5nm 36mm Unmounted #11404
$209.00
Optolong Optolong UHC Filter Canon EOS-C Clip Filter
The UHC (Ultra High Contrast) broadband filter is designed to improve the visibility of various deepsky objects.
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Optolong UHC Filter Canon EOS-C Clip Filter
$95.00
Optolong Optolong H Alpha 7nm EOS Clip Filter #11305
Optolong 7nm hydrogen-alpha narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights.
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Optolong H Alpha 7nm EOS Clip Filter #11305
$240.00
Optolong Optolong H Alpha 7nm Filter 1.25 Mounted
Optolong 7nm hydrogen-alpha narrowband filter is for astrophotographers who want to obtain the maximum contrast of nebulae while cutting out background emission and suppressing star lights.
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Optolong H Alpha 7nm Filter 1.25 Mounted
$179.00
Optolong Optolong LRGB CCD Filter Set - 31mm unmounted
The Optolong LRGB Filter Set comes four 31mm unmounted filters, including Red, Green, Blue, and Luminance.
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Optolong LRGB CCD Filter Set - 31mm unmounted
$279.00
Optolong Optolong 7 Filter Set LRGB, H-Alpha, SII, & OIII 1.25" Mounted
Optolong 7 Filter Set LRGB, H-Alpha, SII, & OIII 1.25" Mounted
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Optolong 7 Filter Set LRGB, H-Alpha, SII, & OIII 1.25" Mounted
$665.00
Optolong Optolong 3 Filter Set H-Alpha, SII, & OIII
Buy all 3 Narrowband Imaging Filters and SAVE!
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Optolong 3 Filter Set H-Alpha, SII, & OIII
$509.00
Optolong Optolong CLS-CCD Filter 1.25" Mounted
Optolong CLS-CCD (City Light Suppression) is a dual-bandpass filter which selectively enhances emission from nebulas and suppresses the transmission of light pollution sources.
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Optolong CLS-CCD Filter 1.25" Mounted
$105.00
Optolong Optolong CLS Filter EOS Clip Filter #EOS-C
Optolong CLS (City Light Suppression) is a dual-bandpass filter which selectively enhances emission from nebulas and suppresses the transmission of light pollution sources.
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Optolong CLS Filter EOS Clip Filter #EOS-C
$95.00
Optolong Optolong CLS Filters
The Optolong CLS filter is perfect for both visual and photographic applications in areas that suffer from artificial light pollution.
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Optolong CLS Filters
$55.00
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
Optolong Optolong L-Para Dual Narrowband Filter - 2.00"
Optolong L-Para is a brand new dual narrowband 10nm light pollution filter. The FWHM of L-Para is 10nm for OIII (500.7nm) and H-Alpha (656.3nm) respectively.
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Optolong L-Para Dual Narrowband Filter - 2.00"
$279.00
Optolong Optolong H Alpha 7nm 36mm unmounted #11307
The Optolong H-Alpha 7nm is an extremely narrow emission-line filter that works by allowing a 7nm bandwidth of light, centered on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths.
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Optolong H Alpha 7nm 36mm unmounted #11307
$209.00
Optolong Optolong H Alpha 7nm 31mm Unmounted #11306
The Optolong H-Alpha 7nm is an extremely narrow emission-line filter that works by allowing a 7nm bandwidth of light, centered on the 656nm wavelength through, and blocking the transmission of contrast-killing light pollution wavelengths.
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Optolong H Alpha 7nm 31mm Unmounted #11306
$189.00
Optolong Optolong UBVRI Filter Set - 36mm Unmounted - UBVRI-36
This photometric UBVRI filter set includes five 36mm round unmounted filters: ultraviolet (U), blue (B), visual (V), red (R), and infrared (I).
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Optolong UBVRI Filter Set - 36mm Unmounted - UBVRI-36
$820.00
Optolong Optolong CLS-CCD Filter Canon EOS-C Clip Filter
The CLS (City Light Suppression) broadband filter was developed to improve the visibility of a range of deep sky objects
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Optolong CLS-CCD Filter Canon EOS-C Clip Filter
$129.00
Optolong Optolong 2" Mounted H-Beta 25nm Filter
This Optolong H-Beta filter has a FWHM of 25nm, making it more suitable for visual observations of the Horsehead, California, and Cocoon nebulae.
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Optolong 2" Mounted H-Beta 25nm Filter
$159.00
Optolong Optolong 2" L-eXtreme f/2 Dual-Band Filter - LXTF2-200
A 7nm Dual Band Filter for the Fastest Astrophotography Telescopes on the Market
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Optolong 2" L-eXtreme f/2 Dual-Band Filter - LXTF2-200
$339.00