Forcing recalibration

[pique...@gmail.com]

It has been a long time since I have done a recalibration. I'd like to be sure I know how to do it.

If I choose a guide star, either manually or by allowing PHD2 to choose it, the instructions indicate that one should do a shift-click. So if the star is selected, and guiding simply starts automatically, I point at the guide icon, press and hold the shift key, then do a left mouse click. Is this right?

Also, I read in the instructions that guding is difficult if too close to the pole. My target is the Heart Nebula, which has a declination around +61 degrees. Is that too close to the pole?

Jean

[Bruce Waddington]

Assuming you have a connection between PHD2 and the mount (e.g. ASCOM), you should use the Calibration Assistant (Tools menu).  Do what it says and try to get a calibration result that is at least 'acceptable'.  The CA is described in the User Guide.

Bruce

[Brian Valente]

Jean

Ideally, you would be using pulse guiding, use the calibration assistant to calibrate once at the meridian/celestial equator, and PHD2 will reuse that calibration everywhere in the sky. There is no need to recalibrate

If you have questions beyond this, you should upload your guidelogs so we can see the specifics of your system and its performance

https://openphdguiding.org/getting-help/

Brian

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Brian 

Brian Valente

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[pique...@gmail.com]

Thanks for the reply. I noticed in the CA instructions that it indicated that I sould be calibrating near the celestial equator. So even though I will be guiding near +61 deg Dec the claibration should still be done near the celestial equator?

[Brian Valente]

You calibrate once at the "ideal location" which is the intersection of the celestial equator/meridian. PHD2 can then reuse that calibration everywhere in the sky, and make the adjustments as need to guide there, including the heart nebula.

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[pique...@gmail.com]

Thanks for the suggestions. Will give them a try and get back if I have trouble.