TAG Polar Alignment
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Re: Pointing Model vs. Polar Alignment
On Jun 9, 2008, at 9:13 AM, Jimbo S. Harris wrote: > Art Morton wrote: >>>> How much of the Veil were you able to cram into one shot? I would >>>> […]
Gemini slew speeds
To do a CCD Polar Alignment, you need to run the mount east at 1x sidereal (the motor runs “backwards” at 1x sidereal), then run the mount west at 1x sidereal (the […]
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Gemini Drift – Pointing Model vs. Polar Alignment
When I am building a Pointing Model in the Gemini (where you select and center bright stars and then the Gemini figures out hot to GOTO properly), the “residual error” which is […]
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Gemini slew speeds
I am trying to get my Gemini handpaddle to slew at exactly 2x sidereal. That is, when I press the “east” button, the drive should move at 2x (stars drift east at […]
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Re: Gemini drift
Art Morton wrote: > Have you gone into the Gemini Set Up? Yes, the particular settings that I think you’re interested in are: Mount Type: G11 Guide speed: 0.3 Tracking Rate: Sidereal […]
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Gemini drift
A, I need to figure out if the trend is in positive RA or negative RA. I know it’s in RA, but I’m awful at figuring out which is which. Anyway, I […]
dec slop
TRICKS TO SOLVE THE DEC GEAR SLOP/SLOW MOTOR PROBLEMS: DEC axis steps: 1)Before going any further, refer to Mike Dodd’s excellent article over on the CGE group in his folder on Autoguiding […]
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drift alignment
The cheat sheet you found does sound daunting. I find that most of the time too much information is just not useful when you are in the field. There is a time […]
RECENT UPDATE
Polar Alignment Calculations
Here’s a page that derives Polar Alignment Calculations. (update 5/2020: the original site is gone, so I found the text on Wayback and am inserting it below. This is by the original […]
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Special Guest Star takes the mount at Hilltop O
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