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webcam focus
In the "lull between the storm fronts", set up the PST. It's impossible to image the sun on a card or transparency, there's not enough light!
I put the webcam in and it focussed OK!!
Measuring the position of the focal plane on my eyepiece and then inserting into the PST, without re-adjusting the PST focus knob gave me the following dimensions:
Distance from the PST body to focus: 70mm
Distance from PST body to the end of the focus tube: 57mm
Therefor it's possible to have up to 13mm between the end of focusser tube and the webcam CCD.
I tried to move the focus further "outward" and only got, maybe a 1mm at the most. At this point the focus knob on the PST was turned all the way out ie max protruding from the PST body.
Certainly before "repair" I had to remove the spacer ( as per Suzy_A) to get good focus, so somthing has changed.
Hope this helps???
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