Polar Alignment with QHY Mini-Guidescope and QHY 5II-M

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Polar Alignment with QHY Mini-Guidescope and QHY 5II-M was created by RDBeck

I have been trying to use the polar alignment routine with my miniguidescope (130mm focal length) and the 5II-M camera since mid-July and never had success. FOV is 2.9x2.3 arc degrees. I can't seem to plate solve with this combination, and I have assumed it was camera noise that dark subtraction didn't correct. I have binned 2x2 and don't recall at the moment what exposure durations I tried. I'm looking for suggestions to see if I can get this to work.

I have been able to polar align with my ASI 224MC on either the guidescope (FOV 2.1x1.6 arc degrees) or my primary scope (FOV 0.6x0.4 arc degrees) so it's not a plate solving issue, per se.

Both PHD2 and the internal guider are able to handle the noise on the QHY 5II-M, and guiding seems reasonable.

Thanks,

Richard
1 year 1 month ago #20702

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Replied by kengs on topic Polar Alignment with QHY Mini-Guidescope and QHY 5II-M

Try capturing an image with the QHY 5II-M and plate solve that directly to see if that works. It might be just the plate solve settings.
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1 year 1 month ago #20705

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Replied by RDBeck on topic Polar Alignment with QHY Mini-Guidescope and QHY 5II-M

I'll try that the next time I'm out.
1 year 1 month ago #20706

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Replied by RDBeck on topic Polar Alignment with QHY Mini-Guidescope and QHY 5II-M

On my last outing the ambient temperature was ~15 C (59F) or cooler. I was able to not only plate solve with the QHY 5II-M, I was able to polar align with it. Perhaps there is a noise issue which is really bad in the Summer (~25 C, 77F, at set up / polar align).
1 year 2 weeks ago #21338

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Replied by Pepe.Lombris on topic Polar Alignment with QHY Mini-Guidescope and QHY 5II-M

Hi Richard,

I have been using the same setup for polar alignment. However, so far I only tried the sharpcap software. I didn't encounter any problems or noise issues even in summer. I also tried the ekos procedure but couldn't finish it because I didn't have a goto mount at hand (tried it on a star adventurer travel mount). But ekos solved all intermediate images.

I didn't use any binning.

Hope that helps.

Best regards
Stephan
Last edit: 1 year 2 weeks ago by Pepe.Lombris.
1 year 2 weeks ago #21340

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