Saturday, March 11, 2017
November - December Observing Report
Tracking and/or polar alignment is off as exposures > 30 seconds result in significant image shift and star trailing. Too tired to mess with drift alignment tonight. Shutting down at 1140. Sky meter reading = 18.95 .
Nov 25, 2016
A few high thin clouds tonight and 62 F, 83% humidity and no wind. Came out after 9 . My goal is to improve my polar alignment and then perhaps do a little viewing. Since I'm working mostly on polar alignment, I set up the Mallincam with no focal reducers at prime focus with an 1” focuser ring, an 80 mm extension tube, and a 2->1-1/4” adapter. No filters or focal reducers.
Iteratively tweaked the azimuth, re-centered the star, and watched the drift. After multiple adjustments I had it holding 5 minutes with the star is still dead center and approximately 1/3 the diameter down.Went to Procyon. It is a bit above the eastern horizon but I don't see any stars lower due to clouds that have built in form the East. At 5 minutes there was no left/right drift evident only a down drift by ½ diameter. Locked down the azimuth locks. Went to Sirius, centered and started tracking. At 5 minutes the star was still ½ diameter below the line but centered left to right. That should have the alignment of the mount good enough for EAA observation. I shut down for the night due to persistent clouds.
Nov 26, 2016