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Old 19-09-2014, 05:01 PM
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codemonkey (Lee)
Lee "Wormsy" Borsboom

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Join Date: Jul 2013
Location: Kilcoy, QLD
Posts: 2,058
Quote:
Originally Posted by Peter.M View Post
Not to beat a dead horse here, but did you actually take an image with your main camera yet? The last graph that you said was "best one but still not good" shows +- 1 arc second (assuming that your graph scale is set to arc seconds and not pixels, and assuming you have entered your focal length in phd2)

That would be quite acceptable to me on most nights.
I did take some exposures last night and the stars were malformed and much larger than they should have been (I didn't save them, though maybe I should have in retrospect).

That one was taken with the guide cam through the focuser rather than the OAG; the OAG seems to make it worse, presumably due to star shape.

That graph also ranges from +2" to about -1.5" which gives me a range of ~3.5".
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