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Here's a tip to get your scope pointing at the same location night after night.
Slew to target and solve it and sync to solved position.
Click Calibrate and set to auto and use PinPoint.
What calibrate does (after solving) is tells PinPoint precisely what arcseconds per pixel your resolution is. So, that, when you solve the previous night's reference frame, and hit Goto, it knows exactly how much to slew the scope to line up tonight's object with the previous night's reference frame.
Also, in the autosave window, where you set up your exposure slots, enable astrometry (solving only) option. This then embeds the precise RA/DEC coordinates in the FITS header (assuming you're using a CCD camera). When it comes time to align your stack, you choose the astrometic correction option, which is supposed to be the most precise option of the lot.
Now, load last night's reference frame and solve it.
You will now have the error between what you're pointing at tonight and what you took last night. Once solved, simply click Goto (which contains the proper RA/DEC coordinates of the area you wanted to go to in the first place) and you'll be bang on.
Also, I find myself using MaxIm DL's observatory control stuff to slew to targets instead of my usual Starry Night Pro Plus 6 shenanigans. I have both bits of software connected to the port, though, so when I send slews via MaxIm DL, it also shows where Gemini is in Starry Night Pro Plus.
Any questions, feel free to ask.
H
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