Baader Planetarium Mark III Coma Corrector
Best high precision optical accessory for dedicated deep sky astrophotographers.
This essential accessory transforms fast Newtonian telescopes by eliminating edge distortion without altering magnification. It delivers sharp, pinpoint stars across the entire field of view, making it an ideal choice for both wide-field astrophotography and visual observation.
$278.00
Who it's for
- Astrophotographers seeking professional-grade image clarity across large sensors
- Visual observers and photographers wanting a single, multi-purpose correction tool
- Deep-sky enthusiasts requiring maximum light throughput and minimal ghosting
Who should skip it
- Novice users who prefer a simple plug-and-play setup
- Weight-conscious travelers or those using lightweight, entry-level focusers
- Budget-focused hobbyists looking for a basic, low-cost optical fix
Performance breakdown
Edge-to-edge sharpness
Eliminates coma distortion, keeping stars pinpoint sharp across the entire frame.
Optical clarity
Phantom Group coatings minimize reflections and maximize light transmission for deep-sky imaging.
Versatility
Seamlessly bridges the gap between visual eyepiece observation and digital astrophotography.
System integration
Modular design allows for straightforward adaptation to various camera and eyepiece setups.
Vignetting control
Wide 44mm clear aperture ensures minimal light falloff on larger sensor formats.
Magnification integrity
Preserves the telescope's native focal length without introducing unwanted magnification changes.
Key Specs
Barrel Size
2 inches
Compatibility
Newtonian telescopes (f/3.5 to f/6)
Filter Thread
48mm
Clear Aperture
44mm
Coating
Phantom Group Multicoatings
Back-Focus Adjustment
+10mm
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