To correct the field of view on their N-Series Astrographs, ASA uses correctors designed by Philipp Keller. All correctors have sufficient backfocus to connect to all popular camera systems.
Astrosystems Austria (ASA) 4" Wynne Corrector
Depending on the corrector, systems can be used at f/3.6 or shortened to f/2.75. Alternatively, N-Series Astrographs can be extended to f/6.8. The photographer can decide which focal length to use, depending on the object they are imaging, the seeing conditions, and other considerations such as wind.
For example, an ASA Astrograph N 8"/f3.6 with a focal length of 730 mm can also be used at 558mm (f/2.75) or as a 1380mm, f/6.8 system. All ASA correctors (4" Wynne Corrector is the one in the upper right.) are available separately and can be used with other Newtonian telescopes.
ASA 4" Wynne Corrector Specifications...
- Corrected Field: 60 mm
- Backfocus: ca. 60 mm
- Additional Information
SKU A2-0200191A Manufacturer ASA Barrel Size 4" Warranty Not Supplied By Manufacturer
- Included Items
- ASA 4" Wynne Corrector
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