Quote:
Originally Posted by Lee
Work out where the prime focus point of the mirror is, this is where the CCD plane needs to sit regardless of all else.... (depending on the back focus requirements of your camera) - in terms of secondary placement and field illumination, you'll have to wait until someone more informed pipes in....
Excellent work by the way....
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The mirror is an 8 inch f6 so does that mean the sensor needs to be exactly 1200mm from the surface of the mirror to focus? And the EP's need to be further out?
The EP's that I've ordered are ES 82's ranging from four point seven mm, to twenty four mm. It will probably be a few weeks until I see them and I don't really feel like waiting until the arrive before putting the mirror in.
So as a start, for the imaging brackets, if I put the focal point 25mm above the racked in focuser would about right for most cameras?
As far as I understand, the longer FL EP's require more infocus than the short FL ones, I have a twenty four mm Hyperion EP, would that be similar to the twenty four mm ES?
My idea was, for the visual mirror attachments, I would position them so that Hyperion would focus with the focuser racked out about 10mm (the focuser has 35mm of travel) this way I hoped the others would focus without trouble, what do you reckon?
Sorry it's so confusing, the four key has died on my keyboard
Cheers
Jo