Yes your right, the guide rate in PHD2 is used as part of the calculation to enable good calibration of your guide star based on your guide equipment and the resultant image scale
The image scale of my guide set up ( 50mm Scope 162mm focal length)for my 6” f6 newt is 4.77 arc sec per pixel which quite high
The image scale of my guide set up ( 60mm Scope 240mm focal length ) for my 8” f5 newt is 3.22 arc sec per pixel which is I assume is better suited for good calibration and better guiding
Any further comments or discussion on the topic
Does anyone else use EQMOD and PHD2 ?
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