ASKAR f/3.9 0.7x Reducer for FULL FRAME Cameras for ASKAR FRA600
- Female M61 (TBC) Connection Thread to the ASKAR FRA400 telescope
- Male M48 thread on the camera side
- Designed for Full Frame cameras
- Built-in 2" filter thread
This 0.7x Reducer has been specifically designed for the ASKAR FRA600 f5.6 APO telescopes to achieve a very fast f/3.9 focal ratio and 420mm focal length for wide field full frame imaging.
It will connect to your telescope via a female M61 thread. (This seems to be very specific to this telescope, so we doubt that you will be able to use it with any other telescope...). The backfocus is 55 mm from the M48 thread and ther eis also a female M48x0.75 thread inside to be used with a standard 2" filter.
It offers a corrected and fully illuminated field for full frame cameras.
Connections and Back Focus:
- connection to telescope: M61 female thread
- connection to camera: M48x0.75 male thread
- Back focus from M48 thread: 55mm
Specifications:
- connection to telescope: M61 female thread
- connection to camera: M48x0.75 male thread
- recommened distance from connecting thread to focal plane: 55mm
- focal length reduction: 0.7x
- lenses: TBC
- fully corrected and illuminated field: TBC
- length: appr. 62mm
- diameter: appr. 70mm (63mm without the collar)
- weight: 430 g