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PEC Training complete, here are the results

Started by fblue, 10/19/2007 05:51PM
Posted 10/19/2007 05:51PM | Edited 10/19/2007 05:54PM Opening Post
Hi All,
Well, I went in the back yard last night and did 4 iterations of PEC on the G-11, with each one averaged to the next. I used PHD guiding to guide while training the PEC. This worked quite well as others had told me on the Yahoo forum.
Polar alignment was done just using the polar scope, no drift was performed.
I took a 4 minute un-guided photo of M33 to see how it tracked. The worm period is 4 minutes, so I thought this would be a fair test.
There was a slight amount of drift, but nothing bad, and the stars were pretty good I thought. You can see the drift though, but there is not a lot of PE that I can see.
Here is the shot with only a little adjustments made to make the stars stand out well.

Attached Image:

fblue's attachment for post 39296

[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue grin
Amateur Imager
Posted 10/19/2007 06:01PM #1
Hi Floyd,

Nice results! I don't think I've attempted 4 minutes unguided, then again once I figured out guiding I never looked back wink

I do see a bit of shaping in the stars. Is your G11 GOTO? If so, you may eventually want to try out PoleAlignMax, which is great freeware for validating and correcting your polar alignment.

Eric
Posted 10/19/2007 06:41PM #2
Floyd,
My gosh, I'd be happy with that on my LX90 as a guided image. Some day, some day...
BTW, that's quite a shot for one 4 minute integration.
Larry
Posted 10/19/2007 07:02PM #3
Floyd,

I'm not familiar with PHD but most guiding programs can put out a text file or something of their corrections. You can put that into an Excel graph and actually watch your mount's error. Give it a shot if you can, and let's look at it.

Alex