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Old 30-09-2006, 11:05 PM
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[1ponders] (Paul)
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Join Date: Nov 2004
Location: Obi Obi, Qld
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NGC104 with Orion ED80 and Meade 6.3 FR

I've been waiting for a few weeks to give this combination a go and I managed to grab 4 shots tonight before the clouds moved in again.

4X2 min ISO400 Canon300d unmodded, ED80 and Meade 6.3 Focal Reducer, autoguided with ToUcam and K3CCDTools. Dark subbed and combined in Imagesplus, post processing and cropping in PS.

To be honest I was expecting more. There is pretty serious vignetting and the FR certainly doesn't flatten the field as much as I'd hoped, stars near the outer edge were almost triangular. They weren't too bad in near the center but I wouldn't call them round.

The first shot has only had levels (and quality and size) adjusted to show the vignetting, the second shot is the first but has had a median filtered duplicate subtracted and quick curves and levels and the third was cropped before adjusting.
Attached Thumbnails
Click for full-size image (NGC104-Curves-and-Levels---vignetting.jpg)
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Click for full-size image (CombineFilesAdpAdd-dig-dev-2.jpg)
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Click for full-size image (NGC104-Dig-dev-2-crop-of-full.jpg)
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