Thread: CCD tilt
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Old 04-10-2012, 11:14 PM
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alistairsam
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Join Date: Nov 2009
Location: Box Hill North, Vic
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CCD tilt

I've made a start with my gear and this is a first test of my qhy8 after adding an Al shim to reduce the CCD tilt.
Can someone confirm if this is indeed CCD plane tilt? That is the stars at the bottom right, centre and top left. Guiding was the best I've ever gotten after some very extensive PA.
I tried rotating the camera and the direction of the trailing did change.

The initial difference in distance between one side of the CCD to the top and other was over 3mm.
I reduced this down to about 1mm after some shims.

scope is an 8" F4, cam Qhy8 one shot with a baader mpcc using a spacer on an heq5pro,
this was taken 2 nights ago with the moon up high and from the city with no flats, darks, so is missing a lot of stars, but it was more of a test.
I finally got the drift alignment with Phd sorted. couldn't believe how easy it was.
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Last edited by alistairsam; 04-10-2012 at 11:45 PM.
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