Drift and Rotation Errors

Drift Error

  Rotation Error

 

Here are the results of shooting 30 frames at 120 seconds each. The LX was polar aligned well enough to stay within one pixel in DEC during a 15 minute test. The duration of the test was around 67.5 minutes. The image below is a cropped average of the best 20 frames. Not that it is great, but it is better than any I've done, as far as star size and shape. The FWHM is around 6.56 x 7.56 arcseconds. With the seeing at 4.1 to 4.66 arcseconds that night, as measured with a five second exposure, these numbers aren't too terribly bad.