200mm Bahtinov Mask
$50.00
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200mm Bahtinov Mask
$50.00
Precision Astrophotography
Effortless star focusing control
Flexible Sizing
Fits 212mm to 252mm shields
8 Inch Compatibility
Perfect for SCT and RC
Pinpoint Optical FocusMaster perfect astrophotography imaging clarity
Achieve critical focus effortlessly with the Bahtinov Mask for 200mm Optics, an essential astrophotography focusing aid designed for 8-inch telescopes. By projecting a distinct diffraction spike pattern onto your sensor, this precision optical tool ensures razor-sharp star images every time.
Mastering Night Sky FocusInnovative diffraction design for astrophotographers
Named after Russian amateur astrophotographer Pavel Bahtinov, the Bahtinov Mask for 200mm Optics eliminates the frustration of manual focusing during deep-space imaging sessions. Placing the mask over the main optic or dew shield creates a distinct diffraction pattern around bright stars. By making fine focal adjustments on your 8" SCT or RC telescope until the central spike directly intersects the grid pattern evenly, you can guarantee perfect optical focus and capture breathtaking astrophotography with complete confidence.
Technical SpecificationsOptical and sizing parameters
Product Name
Bahtinov Mask for 200mm Optics
Compatible Aperture
200mm / 8 Inch
Outer Diameter Range
212mm - 252mm
Supported Designs
SCT, RC, and Refractors
Function
Optical Focusing Aid
Pattern Design
Bahtinov Diffraction Pattern
Key Optical FeaturesDesigned for rapid focusing accuracy
Diffraction Focus ToolInstantly visualizes critical focus accuracy
Universal Shield FitCompatible with 212mm to 252mm outer diameters
SCT & RC OptimizedTailored specifically for 8-inch optical tubes
Simple Slip-On SetupFits easily over existing dew shields
Astrophotography EssentialEnsures sharp pin-point star clarity
Frequently Asked QuestionsEverything you need to know
What telescope types work best with the Bahtinov Mask for 200mm Optics?
The Bahtinov Mask for 200mm Optics is designed primarily for 8-inch Schmidt-Cassegrain (SCT) and Ritchey-Chrétien (RC) telescopes, as well as any optical tube or dew shield with an outside diameter between 212mm and 252mm.
How do I use the Bahtinov Mask for 200mm Optics to achieve precise focus?
Simply mount the Bahtinov Mask for 200mm Optics over the front optic or dew shield of your telescope, point toward a bright star, and take a short test photo. Adjust your focuser until the central diffraction spike is aligned evenly between the diagonal spikes.
Does the Bahtinov Mask for 200mm Optics fit directly on a dew shield?
Yes, the Bahtinov Mask for 200mm Optics easily fits dew shields and optical tube assemblies with an outside diameter measuring between 212mm and 252mm.