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Off axis auto guiding on comets


  1. My choice of equipment and software to do off axis guiding on comets
  2. Setup of PHD2 Beta
  3. Setup of CdC (Skychart) Betaversion
  4. Start comet guiding in PHD2
  5. Overview of Astroserver Screen
  6. Test on comet C/2014 W2 Pan-STARRS

2: Setup of PHD2 Beta

PHD2 (Push Here Dummy) has a really nice support implemented for comet guiding. Before starting the comet auto guiding enter the guide telescope's focal length and guide cameras pixel size (you find it under the brain symbol). Then do a calibration of PHD2 and then let it guide on a star nearby the comet. You must have all that working before proceed. Don't forget to enable the server in PHD2!

PHD2 setup comet tracking 1

Under tools in PHD2 you have a choose of comet tracking, click on it. A new menu popup like the one down here.

Setup comet tracking PHD2 2

You can calculate the comets speed relative stars and enter it here. If you are used with it NASA has a page to assist you: horizons.cgi?s_type=1#top
I will not describe here how to do it in that way, I have a better solution.

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