PHD Guide Image Brightness
Posted 04 March 2013 - 06:48 PM
P.S. I know it will get asked and the answer is...No...I did not ever get it to guide due to unrelated issues I had actually run across before and forgotton about in my time away from guiding ...
Posted 04 March 2013 - 07:06 PM
Posted 04 March 2013 - 08:15 PM
Posted 06 March 2013 - 05:11 PM
Posted 07 March 2013 - 09:13 AM
Posted 07 March 2013 - 10:00 AM
Posted 07 March 2013 - 03:32 PM
Posted 07 March 2013 - 11:55 PM
QHY is the same camera as Orion SSAG and i think i know what's the problem.
Posted 08 March 2013 - 08:41 AM
I'm using the latest version from the Stark Labs website.
I tried again last night. I had used Procyon as an alignment star so it was in the QHY5's FOV. I immedatley noticed the background was much darker and the star field looked more contrasty. I moved the gamma/contrast slider a bit and got a very pleasing view. Then I slewed to my target galaxy which had no bright stars around it and the view became all washed out again. I was able to move the slider almost all the way to the right and the few stars in the field stood out well enough to lock on for guiding but I did get some starmass warnings that periodically flashed on and off. I used 2 second guide exposures and a dark frame. So it looks like when there is a bright star in the field, PHD does perform somy type of auto adjustments on contrast which can be augmented with the slider and you get a nice dark and contrasty background. But when you only have faint stars in the field, it's difficult to darken the background and get good contrast. I don't think this is anything unique to using the QHY5-II. I have not guided in a while, but I remember my old Kwiq-guider doing something similar...John
Posted 08 March 2013 - 04:11 PM
Posted 08 March 2013 - 05:11 PM
Posted 09 March 2013 - 12:41 PM