CAT Series
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CAT Series
From the beginning, the goal was to create the best possible design for
an affordable, small, lightweight, and fast Apochromatic refactor for
astrophotography.
Characteristics:
- 4 lens Petzval optical design
- Aperture 51mm, focal lenght 250mm, f/4.9
- Massive OTA from Aluminum alloy
- Compact and ultra portable
- Field rotator
- Helical focuser design
- Tilting platform
- Field illumination even for full frame sensors
1061.00 €
Estimated delivery time : 2-3 days
William offers with the REDCAT61 Astrograph a very well corrected telescope for astrophotography up to full frame format.
- Aperture 61 mm / Focal length 300 mm / Focal ratio f/4.9
- Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
- Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
- Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
- 360° rotation of the camera for the right display window
- Focusing via internal focusing (William Internal Focus Design - WIFD) as with telephoto lenses
- Tilting option for individual adjustment of the camera sensor to the telescope
- Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
- Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery
1899.00 €
Estimated delivery time : 3-4 weeks
William offers with the REDCAT71 Astrograph a very well corrected telescope for astrophotography up to full frame format.
- Aperture 71 mm / Focal length 350 mm / Focal ratio f/4.9
- Petzval design with chromatic aberration free FPL53 objective (4 elements in 3 groups)
- Very well corrected and illuminated image field up to full frame format - the corrector is built in - no more adapter battle necessary
- Camera connection via M48 male thread (suitable adapters are available) - working distance 55 mm
- 360° rotation of the camera for the right display window
- Focusing via precise helical focuser like telephoto lenses
- Tilting option for individual adjustment of the camera sensor to the telescope
- Flexible dovetail bar at the base (long version), suitable for Vixen style and Arca-Swiss saddle plates, in addition with 1/4" female photo tripod thread
- Nylon carrying bag and Bahtinov mask for astrophotography are included in delivery
2090.00 €
Estimated delivery time : 4-8 weeks
