Discussion in 'General' started by Marshall Edgell, Nov 5, 2017.
Does the guide chip have the same focal length as the main camera? If not what is it?
Cameras don't have focal lengths. They do have a pixel size. And in the case of the FW8G-STXL, there is a focal reducer in the assembly.
Are you talking about an STL or an STXL?
I thought there might be a focal reducer involved. I have an SBIG STXL 11002 on a 2939 focal length telescope. What would the focal reducer bring the focal length down to for the guide chip?
The self-guiding wheel incorporates a 0.7X focal reducer for the guide camera.
I assume this means my guide chip focal length is 0.7 x 2939mm or 2057.
Sorry to be so ignorant.
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