Phd2 help

[AstroBogan]

Hi Guys,

So i had PHD2 guiding without any issues and with a total RMS failure of around .56. As soon as i stopped guiding on one target, i slewed to my new target for the night (NGC 6188). As soon as i started to guide, my graph ended up looking like the attached image. I have my mount tracking and my polar alignment is good. it just drifts and does not correct on RA..

Any idea WTH has happened? :mad2:

[rustigsmed]

its a good idea to recalibrate phd2 on each new target you go to. it's still calibrated at the last target.

[Imme]

I second that.
....and tick the corrections box so u can see what it is actually doing to correct the drift......it helps to see what commands phd is actually sending

[AstroBogan]

Thanks guys, worked a treat :) sorry for my noobishness. tonight was the first night i've been able to guide properly!

[rustigsmed]

no worries - that is what the forum is for! looking forward to seeing your pic :thumbsup:

[Imme]

We’ve all been there....I spent countless nights trying to work phd2 out and asked plenty of questions too......the guys on here set me straight and now I feel I have a good grasp on the program.

....but......you now have to ‘pay it forward’ when you see a question asked that you have an answer to:welcome:

[benklerk]

I calibrate I bit differently. I choose a star close to 0 deg Dec and near the meridian before my imaging session. This also gives me a chance to see if my polar alignment is still good.

I image all over the night sky from zenith to near the SGP and guiding is always spot on.
I have just rearranged my setup and I can easily guide for 10min to 15min, 20 min sometimes work. On my Heq5 pro belt mod.

I do use Sequence Generator Pro which connects to PHD2 and chooses a star and guides automatically.

Just my quick input on PHD2 guiding.

Ben

[luka]

Same here. I calibrate only once a night close to 0 Dec. Actually if you are too far from 0 deg Dec, PHD2 will suggest calibrating at <20deg Dec.