More results with CPC1100 and Pempro
Posted 02 May 2010 - 08:46 AM
Posted 02 May 2010 - 08:48 AM
Posted 02 May 2010 - 05:51 PM
Posted 02 May 2010 - 06:43 PM
BTW, what do you make of the excursion shown in the first graph? I saw others, too. Ray Gralak suggested maybe a bit of debris in the gears. Since the scope is only six months old - and has spent much of that time at Celestron, in fact - I kind of doubt the ball bearings are an issue, but I don't really know.
Posted 03 May 2010 - 12:07 AM
Could you explain the PEC procedure you used to create the post PEC curves? Is it the same procedure described in the Celestron manual, where you have to guide the scope for 8 minutes? If you have to guide to get this PEC profile, how does PEC really help you? Wouldn't this be the same as autoguiding for each session?
Posted 03 May 2010 - 06:06 AM
It would be interesting to compare this to results with Celestron's PEC Tool. Running PEC Tool in batch mode, your autoguider keeps the star in view. PEC Tool records the commands sent to the mount, then creates a curve and uploads it to the mount.
Posted 03 May 2010 - 10:51 AM
Edit: I'm reading through the Pempro manual, so some of my questions are being addressed there. If you have any comments beyond that, I'd be interested in hearing them!
Posted 03 May 2010 - 03:01 PM
Posted 03 May 2010 - 11:41 PM
Step 1: Analyze your Mount's Periodic Error (PE) with PEMPro.
Step 2: Create a PE Curve with Pempro based on the above analysis.
Step 3: Upload the PE Curve to your mount via. PEMPro.
Step 4: On your next imaging session be sure to turn on your mount's Periodic Error Correction (PEC) with the Hand Control before you start autoguiding. This will take a lot of duty off your autoguider and result in much better tracking/guiding.