Astro-Physics CCD Telecompressor
Best high precision focal reducer for dedicated deep sky astrophotographers.
This optical accessory effectively reduces focal length to expand the field of view for astrophotography. It is specifically engineered to maintain image sharpness and contrast across the frame without introducing aberrations, making it an essential tool for capturing deep-sky objects with longer focal length instruments.
$189.00
at
Astro-physics
More CCD Focal Reducer options
Who it's for
- Astrophotographers seeking faster exposure times and wider celestial views
- Detail-oriented imagers requiring pinpoint star shapes and high contrast
- Advanced users with complex imaging trains and multiple accessories
Who should skip it
- Owners of fast Newtonian or short focal length telescopes
- Photographers using large-format sensors who demand perfectly even illumination
- Budget-conscious hobbyists looking for an all-inclusive out-of-the-box solution
Performance breakdown
Optical Clarity
Two-element cemented design ensures exceptional light transmission across the visible spectrum.
Sensor Compatibility
Perfectly illuminates APS-C sensors with minimal vignetting or edge distortion.
Versatility
Adjustable back-spacing allows for precise tuning across various telescope focal lengths.
Aberration Control
Maintains native resolution without introducing unwanted coma to your wavefront.
System Integration
Broad compatibility makes it a reliable fit for most common optical designs.
Field of View
The 0.67x compression factor significantly widens your capture area for deep-sky imaging.
Key Specs
Focal Length
305 mm
Compression Factor
0.67x
Clear Aperture
1.75 inches
Filter Thread
48 mm
Design
2-element cemented
Compatibility
Maksutov-Cassegrains, Schmidt-Cassegrains, Ritchey-Chretiens, Refractors
Insertion Depth
29.1 mm
Know before you buy
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