Quote:
Originally Posted by gregbradley
Not sure what you mean. PHD2 works like Pempro but less sophisticated. It projects a trend line when the star is at a certain location and you adjust until the trend line settles down to be accurate and it is level. That can be tricky in that you have to wait a while after an adjustment until the plot settles down and the trendline is obvious. It seems quite sensitive to small changes so that is good.
Pempro does something very similar but it has a few additional steps.
Greg.
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Quote:
Originally Posted by peter_4059
I'd say less complicated rather than less sophisticated since they both plot a trend line of the Dec drift after following a calibration process. I've used both and find phd quite a lot easier to use.
Once the circle is so small that you can't see the adjustment the alignment is close enough from what I've read on the phd2 group forum hence no magnify functionality.
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I had considered getting PemPro for a while but as my new mount is not going to have any need for periodic correction (no gears), haven't bothered seeing whether it'll improve my EQ6. Basically, no experience with how that one works
Peter has nailed it though, I wasn't sure how accurate I needed to be in that drift alignments circle thing (purple circle). The problem is that with my guide scope at a pixel scale of 3.4", even a small circle equates to a relatively large error quite quickly (hence wanting to zoom in). Now that I have the QHY22 it may perform a lot better than the QHY9 did for this purpose, at least that has a scale of 1.4" which is kinda a 2.5x zoom on what I had previously been trying.