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PHD2 Calibration Position Made Easy
Posted: Tue Sep 15, 2020 10:24 pm
by JayTee
Below is a direct quote from a post by Andy Glasso of
Open PHD Guiding Google Group fame.
An easy way get the scope pointed in the correct region of the sky for calibration is to slew
RA until your counterweight bar is close to horizontal, then slew
Dec until your scope tube is somewhat perpendicular to the mount's polar axis, like this picture:
It needn't be exact, anywhere in the vicinity of that orientation is fine.
So, instead of looking for a star that is near to both the
Meridian and the Celestrial Equator, just slew your scope till it looks like this then calibrate away!
Cheers,
JT
Re: PHD2 Calibration Position Made Easy
Posted: Tue Sep 15, 2020 10:36 pm
by bobharmony
The PHD2 drift alignment tool will take you very close to the meridian and celestial equator as a first step in the alignment process if your scope is in the home position. Select drift alignment from the tools menu, click the slew button and away you go. It is the first place I go every session after doing a quick align from the HC menu.
Bob
Re: PHD2 Calibration Position Made Easy
Posted: Thu Dec 17, 2020 11:09 pm
by Larry 1969
Thanks!
Re: PHD2 Calibration Position Made Easy
Posted: Tue Sep 20, 2022 10:12 am
by UkDave
If using Apt press Shift and click Goto that brings up pop up menu , choose bottom option that will slew mount to celestial equator.
Re: PHD2 Calibration Position Made Easy
Posted: Tue Nov 15, 2022 11:20 pm
by chartram
I recall reading somewhere that in addition to doing a good PA, choosing a calibration star that is close to 0°Declination is best. Choosing stars between 0-10° DEC, my average total RMS is normally between 0.2 & 0.3. Maybe a coincidence, but my scope/mount are ‘usually’ somewhere near the orientation pictured when calibrating. I will definitely try this, maybe save some searching. thank you JT!
Mike