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Optolong Optolong L-eXtreme f/2 Dual-Band Filter
Optolong L-eXtreme F2 is a dual-band narrowband pass filter that meets the requirements for transmission at continuously varying angles
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Optolong L-eXtreme f/2 Dual-Band Filter
$339.00
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 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 LRGB CCD Filterset
The LRGB filter set is designed for maximum contrast and with extremely high gradients for clear differentiation of colors
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Optolong LRGB CCD Filterset
$249.00
Optolong Optolong CLS-CCD Filter
The CLS-CCD broadband filter is designed to improve the visibility of various deepsky objects.
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Optolong CLS-CCD Filter
$105.00
Optolong Optolong CLS Filter
The CLS (City Light Suppression) broadband filter is designed to improve the visibility of various deepsky objects.
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Optolong CLS Filter
$55.00
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 OIII CCD 3nm Filter
Extra narrowband filter, allow a 3nm bandwidth of light, centered on a 500nm wavelength
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Optolong OIII CCD 3nm Filter
$460.00
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
Sigma Sigma 15mm F1.4 DC | Contemporary
Professional-level optical performance with everyday portability — so you can carry less, shoot more, and never miss a moment.
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Sigma 15mm F1.4 DC | Contemporary
$579.00
Vivitar Altura Photo 58MM 0.35x Fisheye Wide Angle Lens (w/Macro Portion) for DSLR Cameras
Easily screws on to the front of your lens
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Altura Photo 58MM 0.35x Fisheye Wide Angle Lens (w/Macro Portion) for DSLR Cameras
$49.99
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
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
The Argus 35mm Guide and Reference Book by Kenneth Tydings 1954 (Pre-Owned)
This book is a guide and reference book for Argus 35mm cameras.
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The Argus 35mm Guide and Reference Book by Kenneth Tydings 1954 (Pre-Owned)
$8.99
Orion Mars Filter 1.25
Orion Mars Filter 1.25
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Orion Mars Filter 1.25
$59.95
Meade Meade #895 Vibration Suspension Pads - LIKE NEW IN BOX!
Meade #895 Vibration Suspension Pads - LIKE NEW IN BOX!
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Meade #895 Vibration Suspension Pads - LIKE NEW IN BOX!
$49.90
iOptron IOptron AC Adapter 1.5 Amp
12V DC power supply for iOptron telescope mount.
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IOptron AC Adapter 1.5 Amp
$26.00
DayStar Daystar SOL-60 H-alpha Telescope
NEW Daystar SOL-60 H-alpha Telescope
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Daystar SOL-60 H-alpha Telescope
$1,995.00
iOptron iOptron Pier Top Plate
6" (150mm) iOptron Pier Top flange plate for building your own pier or modifying your existing tripod/pier.
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iOptron Pier Top Plate
$60.00
Bronica Zenza Bronica Bellows Attachment 2 (Pre-Owned)
Zenza Bronica Bellows Attachment 2 (Pre-Owned)
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Zenza Bronica Bellows Attachment 2 (Pre-Owned)
$199.00
iOptron iOptron Tri-Pier Adapter
With these adapters, you can install your mount onto this sturdy yet portable iOptron Tri-pier.
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iOptron Tri-Pier Adapter
$148.00
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William Optics William Optics Clutch for ZWO EAF/EAFN/EAF Pro (2025)
The William Optics EAF Clutch adds flexibility, protection, and operational efficiency to automated focusing systems. By combining secure motorized control with instant manual access, it delivers a refined focusing experience.
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William Optics Clutch for ZWO EAF/EAFN/EAF Pro (2025)
$99.00
$94.05
Adjustment knob for manual fine adjustment on Vixen, Skywatcher etc. mounts LIMITED QUANTITIES
The adjustment knob is simply attached to the right ascension or declination axis
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Adjustment knob for manual fine adjustment on Vixen, Skywatcher etc. mounts LIMITED QUANTITIES
$19.00