Option:
for M48: is the same (total length: 11,5mm)
for EOS: add to 2mm (total length: 13,5mm)
for Nikon: add to 2mm (total length: 13,5mm)
If you use corrector with standard 55mm backfocus:
T2 to Sensor = 43,5mm
M48 to Sensor = 43,5mm
EOS to Sensor = 41,5mm (needed 44mm)
Nikon to Sensor = 41,5mm (needed 46,5mm)
Option:
for M48: add to 5mm (total length: 16mm)
for T2: add to 7mm (total length: 18mm)
for M36,4: add to 11mm (total length: 22mm)
for C-Mount: add to 17mm (total length: 28mm)
If you use corrector with standard 55mm backfocus:
T2 to Sensor = 37,0mm
M48 to Sensor = 39,0mm
EOS to Sensor = 44,0mm (needed 44mm)
C-Mount to Sensor = 27,0mm (needed 17,5mm)
with adjustable prism
for ALL TYPES from telescopes and cameras
adjusting is not possible.
Optimized for Canon-EOS and F/4
Photography with Canon EOS
with additional parts available
Photography with Canon EOS:
no additional parts needed
optimized for Canon EOS
Please make sure, if the corrector thread-length is longer as 2,2mm or 5,5mm, means you need longer back focus.
Correctors with long thread can be prevent demage with the guide-prism or with the holder from guide-prism!
Tipp: change the plastic screws on metall, and fix the adjustable part on the best position for your equipment.
After this, please don't change more the adjust!
Tipp: It is not adjustable, but extremely stable design.
The position from Guide-prism optimized for f/4.
You can use it well if you have a f/4 - f/6 system.
You need maybe longer time to find a guide-star if you use very long focus (SC or Maksutov, over f/10)
If your Autoguider demands the pixel rows of the guidecam being parallel to RA/DEC, (f.e.: Synguider or Guidesystems without autocollimation) you may turn the platform to reach the desired position.