PHD when you don't have a DEC drive

[seeker372011 (Narayan)]

Hello all

I am thinking I need to drift align my astrotrac...which only has RA drive of course

Having gotten lazy these days,any polar aligning I do is using PHD..you know the watch the Dx/dy graph routine and make adjustments to alt and as

My question is whether PHD will calibrate at all if there is no DEC drive?

I could test it quite easily of course..if there were no cloud...so i wondered if anyone can advise?

If this will work I need to buy a guide scope or something and I don't want to spend $100 if it is going to be a waste


Thanks in advance

Narayan

[naskies (Dave)]

Yep, I've successfully drift aligned an Astrotrac TT320X-AG using PHD. Same process as with an EQ6 - the dx/dy graph works the same way.

[seeker372011 (Narayan)]

Thanks..knew someone here would know the answer!

[pmrid (Peter)]

Originally Posted by seeker372011

My question is whether PHD will calibrate at all if there is no DEC drive?

You will have seen that Dec guiding can also be disabled in the PHD toolbox.
Peter

[seeker372011 (Narayan)]

Originally Posted by pmrid

You will have seen that Dec guiding can also be disabled in the PHD toolbox.
Peter

Yes of course, but what I wasn't sure was if PHD would calibrate with dec disabled

[Tandum (Robin)]

You are better off disabling all guiding and using the ra/dec charts. The dx/dy chart does not correct for angular errors in the camera.