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Old 22-09-2009, 10:04 AM
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multiweb (Marc)
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Join Date: Oct 2007
Location: Hinchinbrook
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Quote:
Originally Posted by toryglen-boy View Post
Marc, how do you attach the MPCC? i think i have my spacing correct with the rings etc, but i cant be sure.

i am pretty certain its sitting at 55mm away from the CCD, although i have to remove the IR Nosepiece to do this.

Ha... that's another one I got stuck on for months. I ended up getting a custom spacer done from http://www.tan14.com/gears.htm. On my 5" newt I need 53.5mm. On the ED80 closer to 56mm. So I have a telescopic adapter that gives me nearl20mm travel on each side. I posted a pic to this reply.

The nose piece is approx 13mm, the sensor plane is approx 6mm from the outside face of the camera so you already have 19mm there minus 55mm that gives you approx 36mm for the spacer on top of the nose piece.

You will find that keeping the nose piece with the MPCC gives you terrible results on bright stars. Light bounces like crazy and you get secondary reflections everywhere.
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