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Re: New G11G and bad guiding first night: Need advice for gathering data tonight.

 

David,

Some "gotchas" to watch for:

1. After you polar align, retighten the AZ thumbscrews.
? ?If you find this affects your PA, I suggest you add some Belleville vsoring washers to your AZ bolts to keep pressure on the AZ.??
? ?I also put a thick Belleville spring under the mount center pivot bolt.??

? ?See attached photos.? If you need these springs let me know and I'll send you kit.??

2. The tripod locking mechanism can slowly slip.??
? ?It seems impossible, but the tries going tripod legs can slip under a heavy load.? Be sure the legs are really clamped.??

3. Aligning PA using the Polaris area is not exact.
? ? It is better to do a drift alignment using stars on the celestial equator (90 degrees from the pole area) after you use the NCP area stars.? PHD2 has nice tools for Drift alignment.??

Hope these help you chase down your PA issues,

Michael



On Wed, Jun 2, 2021, 12:16 PM David Malanick <malanick@...> wrote:
Well I found some time to work on this,? I wake up for work at 3:30AM.? 2 hours of sleep sucks.
I'm going to try again this week for better logs,? I will post this with info.

I had a Excellent SharpCap PA for first calibration then went over to DEC 0 and it showed PA? of by 7.7 Don't know how that happened.
It was a little windy 5-7mph. Calibration, GA, Guided run and unguided run.? Looked bad, I assumed because of PA.
Second try PA was great .4, any wind was gone.
Did a GA and a guided run then unguided.
The unguided ended early because I switched sides to avoid a flip, the mount slewed to the other, wrong, side and after a bit NINA stopped everything waiting to do a flip.
My bad, vary sleepy at this point.
Thanks
David Malanick
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