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Optolong Optolong SII 3nm CCD Filter
Optolong Optolong SII 3nm CCD Filter
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Optolong SII 3nm CCD Filter
$460.00
Optolong Optolong OIII 18nm Filter
Designed for nebula observation allowing 18nm bandwidth of light centered on a wavelength of 500nm through
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Optolong OIII 18nm Filter
$87.00
Optolong Optolong H-Alpha 3nm CCD Filter
Suitable for telescopes and lenses with focal ratios of f/3 and lower
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Optolong H-Alpha 3nm CCD Filter
$460.00
William Optics William Optics Ultra-Cat 131
Designed for serious astrophotographers and observatories alike, the Ultra-Cat 131 combines a fast focal ratio with uncompromising optical precision, enabling stunning deep-sky detail, rich contrast, and immersive wide-field compositions.
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William Optics Ultra-Cat 131
$5,398.00
Optolong Optolong SII 6.5nm Filter
Optolong Optolong SII 6.5nm Filter
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Optolong SII 6.5nm Filter
$249.00
Optolong Optolong SHO-3nm Narrowband Filter Kit
Optolong SHO-3nm filter kit includes SII3nm, H-Alpha3nm, and OIII3nm narrow band filters
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Optolong SHO-3nm Narrowband Filter Kit
$1,319.00
Optolong Optolong OIII 6.5nm Filter
Designed for Nebula Observation
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Optolong OIII 6.5nm Filter
$249.00
Optolong Optolong L-eNhance Light Pollution Dual Band Pass Imaging Filter
Optolong L-eNhance is a dual-band pass filter which has been designed for DSLR (digital SLR), color CMOS and monochrome CCD cameras
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Optolong L-eNhance Light Pollution Dual Band Pass Imaging Filter
$249.00
Optolong Optolong Variable Polarizing Filter
Adjust the brightness level of the Moon, Venus, and other bright objects with the Optolong Variable Polarizer.
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Optolong Variable Polarizing Filter
$43.00
Optolong Optolong IR Pass 685nm Filter
Blocks wavelengths below 670nm to enhance contrast and surface detail and reduce the effects of seeing when used in IR-LRGB imaging of the moon and planets
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Optolong IR Pass 685nm Filter
$129.00
Optolong Optolong 7 Filter Set LRGB, H-Alpha, SII, & OIII
Opotlong 7 Filter LRGB SHO Filter set
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Optolong 7 Filter Set LRGB, H-Alpha, SII, & OIII
$732.00
Optolong Optolong 5 Filter Set LRGB & H-Alpha
This Optolong LRGB/H-Alpha filter set combines everything you need for stunning planetary and deep-sky observations.
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Optolong 5 Filter Set LRGB & H-Alpha
$406.00
Optolong Optolong H-Beta Narrowband Filter
Designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 486nm through
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Optolong H-Beta Narrowband Filter
$90.00
Optolong Optolong Moon & Skyglow Filter
Darken the background sky by blocking light transmission from skyglow
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Optolong Moon & Skyglow Filter
$35.00
Sigma Sigma 17-40mm F1.8 DC Art
Professional-grade optical performance for advanced photographers ready to step beyond kit and mid-tier zooms
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Sigma 17-40mm F1.8 DC Art
$919.00
Front Polarscope Port Cover for Celestron CG4 Type Mount and similar (35mm Inner Diameter) (LIMITED QUANTITIES!)
Replacement front Port Cover for CG-4 Type Mounts and similar
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Front Polarscope Port Cover for Celestron CG4 Type Mount and similar (35mm Inner Diameter) (LIMITED QUANTITIES!)
$14.99
iOptron iOptron HEM27 EQ Strain Wave Hybrid Mount with iPolar (OPEN BOX - FULL WARRANTY)
iOptron’s revolutionary hybrid strain wave drive mount
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iOptron HEM27 EQ Strain Wave Hybrid Mount with iPolar (OPEN BOX - FULL WARRANTY)
$1,995.00
Sigma Sigma 35mm F1.4 DG II Art
Powerful, portable, and optically refined—the 35mm F1.4 DG II Art delivers professional-grade performance in a beautifully balanced everyday prime.
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Sigma 35mm F1.4 DG II Art
$1,059.00
Arcturus Arcturus Telrad Dew Shield (LIMITED QUANTITIES)
Pre-owned Arcturus Telrad Dew Shield - Limited Quantities!
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Arcturus Telrad Dew Shield (LIMITED QUANTITIES)
$20.00
Phototherm Sidekick Film Processor AF-SPL 4 Roll Spindle
Phototherm Sidekick Film Processor AF-SPL 4 Roll Spindle
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Phototherm Sidekick Film Processor AF-SPL 4 Roll Spindle
$150.00
Spike-a Metal Bahtinov Mask for 8" SCT's (Pre-Owned)
Spike-a Metal Bahtinov Mask for 8" SCT's (Pre-Owned)
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Spike-a Metal Bahtinov Mask for 8" SCT's (Pre-Owned)
$35.00
Unbranded H12mm 1.25 Eyepiece (Pre-owned)
Unbranded H12mm 1.25 Eyepiece (Pre-owned)
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Unbranded H12mm 1.25 Eyepiece (Pre-owned)
$19.00
Stabilizer bar Assembly for most EQ2 Equatorial Mounts (Pre-owned)
Stabilizer bar Assembly for most EQ2 Equatorial Mounts (Pre-owned)
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Stabilizer bar Assembly for most EQ2 Equatorial Mounts (Pre-owned)
$29.00
Universal Astronomics Replacement Handle Only for UA Mounts (Pre-owned)
Universal Astronomics Replacement Handle Only for UA Mounts (Pre-owned)
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Universal Astronomics Replacement Handle Only for UA Mounts (Pre-owned)
$35.00