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Most Popular Products

LENSPEN OPTICS CLEANING TOOLLENSPEN OPTICS CLEANING TOOL
Celestron LENSPEN OPTICS CLEANING TOOL
$18.99
Starfield Optics ED102 FPL-53 APOStarfield Optics ED102 FPL-53 APO
Starfield Starfield Optics ED102 FPL-53 APO
From $1,525.00
Starfield Optics 8" f/6 DobsonianStarfield Optics 8" f/6 Dobsonian
Starfield Starfield Optics 8" f/6 Dobsonian
$920.00
Starfield Optics 10" f/5 DobsonianStarfield Optics 10" f/5 Dobsonian
Starfield Starfield Optics 10" f/5 Dobsonian
$1,275.00
Deluxe Laser CollimatorDeluxe Laser Collimator
Starfield Deluxe Laser Collimator
$89.99
Celestron SCT 8 f/10 standardCelestron SCT 8 f/10 standard
Bob's Knobs Celestron SCT 8 f/10 standard
$33.92
Celestron SCT 8 f/10 metricCelestron SCT 8 f/10 metric
Bob's Knobs Celestron SCT 8 f/10 metric
$33.92
Celestron SCT 8 EdgeHD Collimation knobs
Bob's Knobs Celestron SCT 8 EdgeHD Collimation knobs
$33.92
Celestron SCT 9.25 f/10 standard
Bob's Knobs Celestron SCT 9.25 f/10 standard
$33.92
Celestron SCT 9.25 Fastar knobs
Bob's Knobs Celestron SCT 9.25 Fastar knobs
$33.92
Celestron SCT 11 f/10 standard
Bob's Knobs Celestron SCT 11 f/10 standard
$33.92
Celestron SCT 11 f/10 metric Fastar
Bob's Knobs Celestron SCT 11 f/10 metric Fastar
$39.99
Collimation knob for secondary mirror
Bob's Knobs Collimation knob for secondary mirror
$33.92
Meade / Celestron / Orion
Bob's Knobs Meade / Celestron / Orion
$33.00
Meade SCT 8 f/10 3-screw
Bob's Knobs Meade SCT 8 f/10 3-screw
$33.92
Meade SCT 8 f/10 6-screw
Bob's Knobs Meade SCT 8 f/10 6-screw
$33.92
Meade SCT 10 f/10 3-screw
Bob's Knobs Meade SCT 10 f/10 3-screw
$33.92
Meade SCT 10 f/10 6-screw
Bob's Knobs Meade SCT 10 f/10 6-screw
$33.92
Meade SCT 12 3- and 4-screw f/10
Bob's Knobs Meade SCT 12 3- and 4-screw f/10
$38.00
Skywatcher / Celestron Collimation knobSkywatcher / Celestron Collimation knob
Bob's Knobs Skywatcher / Celestron Collimation knob
$40.00

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Featured Products

ASI585MC ProASI585MC Pro
ZWO Optical ASI585MC Pro
$809.00
Skywatcher Wave150i Strainwave mountShown with option tripod. OTA not included
Skywatcher Skywatcher Wave150i Strainwave mount
$3,470.00
FlatMaster 120 NeoFlatMaster 120 Neo
Pegasus Astro FlatMaster 120 Neo
$688.99
Pegaus Falcon Rotator V2Pegaus Falcon Rotator V2
Pegasus Astro Pegaus Falcon Rotator V2
$969.99
AZ8-RISER
Losmandy AZ8-RISER
$147.99
StellarMate Pro 64GBStellarMate Pro 64GB
Stellarmate StellarMate Pro 64GB
$689.99
Skywatcher Wave 100i Strainwave mountSkywatcher Wave 100i Strainwave mount
Skywatcher Skywatcher Wave 100i Strainwave mount
$2,630.00
Antlia Quad Band Anti-Light Pollution Filter 2"
Antlia Filters Antlia Quad Band Anti-Light Pollution Filter 2"
$267.99
iOptron HAE16iOptron HAE16
iOptron iOptron HAE16
$1,999.99
Skywatcher Heliostar 76mm H-Alpha Solar TelescopeSkywatcher Heliostar 76mm H-Alpha Solar Telescope
Skywatcher Skywatcher Heliostar 76mm H-Alpha Solar Telescope
$4,720.00
Vaonis Hestia Smartphone-Based Telescope with Full-Size Tripod and Solar FilterVaonis Hestia Smartphone-Based Telescope with Full-Size Tripod and Solar Filter
Vaonis Vaonis Hestia Smartphone-Based Telescope with Full-Size Tripod and Solar Filter
$424.99
ASI585MC-AIR Smart CameraASI585MC-AIR Smart Camera
ZWO Optical ASI585MC-AIR Smart Camera
$1,135.00

Recent Blog Posts

ZWO Duo camera's and compatible image circles

APS-C vs full-frame image circle -S. Mallia
Maximize Performance with the Right Image Circle for Your ZWO ASI2600 and ASI585MC Air Cameras If you're using one of the latest ZWO ASI Air cameras,

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Navigating Optolong Filters: L-eNhance, L-eXtreme, and L-Ultimate for Astrophotography

Best filters for astrophotography -S. Mallia
Navigating Optolong Filters: L-eNhance, L-eXtreme, L-Ultimate, and L-Quad Enhance for Astrophotography If you're capturing the night sky with a color

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May 2025 The night sky this month. Galaxy season wraps up.

astrophotography - S. Mallia
May is an exciting month for astronomers and skywatchers, offering captivating celestial events as galaxy season winds down and we prepare for the dar

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