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I've attemptig to guide using PhD and i was wondering if I could get some feedback.
This is my setup
Mount: EQ6
Scope: 8" Newt (f/6)
Guide scope: 60mm refractor (f/11.7)
Guide camera: unmodded toucam
Imaging camera: unmodded Canon 400D
Guiding method: Shoestring. ST4 input is on handcontroller, not on mount.
Guide camera image scale: 1.65 arcsec/pixel
Imaging camera scale: 0.98 arcsec/pixel
I don't have that much DEC backlash but I tend to either guide NORTH or SOUTH in dec. I do run into some issues when in DEC AUTO mode.
My problem is that I'm starting to get drift in RA. This generally only happens when I have DEC guiding off. Take the two shots for example. The first shows guiding with DEC guiding in AUTO mode. I still have to sort out the brain settings to try and reduce the oscillations. I also sometimes experience large jumps in DEC, which also impacts RA. I assume this is a backlash issue?
In the second example, DEC guiding is switched off. There is some drift in DEC (bad ploar alignment), but you can also see drift in RA. I'm not sure why this is the case. PhD does send pulses but it's just not moving the graph back to the central line. I assume this is what PhD is supposed to do? Any ideas?
Also, I'm not up-to-scratch in knowing how much I need to try and reduce the oscillations based on imaging scales. Would my guiding (based on the first picture), be ok with those oscillations? I guess I should just try some pictures and see how they turn out.
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