After managing some pretty poor guiding results lately I decided it was time to (re) tune my HEQ5 and then went the whole hog and fitted the Rowan belt upgrade. Below are two runs (without imaging) with the ZWO mini guide scope and ZWO ASI290. The mount is on a pier. The 'target' was the Whirlpool Galaxy, so very in the sky. The first guidelog is using unsmoothed PEC data. The second using PEC data smoothed in PecPrep. The seeing on the first night was quite a bit better than the second. Polar alignment error for the first night recorded at 1.2', 2.1' on the second
The log shows I was using 2000ms (2") exposures. Multi-star seemed to be working on the second night but not the first. Also the corrections don't show even though I saw corrections live on PHD2.
I am pleased with the results and the consistency, next will come a test with actually imaging with dithering. I am interested in the spikes in Dec in the second image, a couple of pairs seem to indicate a connection with the worm period of 638 seconds. Any ideas would be welcome.
The lack of the grinding sound from the old cogwheels is wonderful.
Edited by Topographic, 04 May 2021 - 04:50 AM.