PHD when you don't have a DEC drive

[seeker372011]

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]

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]

Thanks..knew someone here would know the answer!

[pmrid]

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

[seeker372011]

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

[Tandum]

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.