Re: Bad images _Bouncing stars

Konstantin von Poschinger


Try to give more time for recentering and use the multistar guiding in maxim.


Konstantin v. Poschinger

Hammerichstr. 5
22605 Hamburg

Am 29.04.2020 um 00:34 schrieb John Thompson via <jbtgolfer@...>:

I apologize. I should have provided more information in my "bouncing stars"post. It's an AP 1600 mount (no Encoders) with a TEC140 F/7 scope with a FLI Atlas focuser. It's running Maxim for the main camera, SBIG STF-8300 and PHD for the guide camera, a SBIG ST-i. I am using APCC Pro with SkyX for the planetary program. The focus program is FocusMax. The session runs auto using CCDAutoPilot5. I am shooting LRGB 10 images each filter @ 600 sec using a 5 pixel dither between images. PHD is running RA and DEC in Hyperstasis with a 60 aggression setting with 3 sec exposures with dithering. Actually the guiding looks very good with very few corrections and a low RMS. I don;t believe the guide star is lost at any time but dithering might be an issue. I will look at the guide logs for any clues. The only time I see something "funny" is during the dithers. But the guiding stops during the dithers and then re-aguires the guide star.

The night was almost perfect, 5 by 5. No clouds or wind (3 MPH max) All cables are routed through the mount and appear ok.

I may try some imaging at 600 sec with no guiding tonight and some with no dithering. Thank you all for the comments. Any other ideas are appreciated.

Join to automatically receive all group messages.