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Using an achromat for AP
I have recently modded a Canon 1000D by replacing the stock Canon UV/IR filter with an Astrodon Inside UV/IR blocking filter. First light was last night on Eta Carinae, and for something different I thought I'd also have a go at using my Long Perng 80mm f6 achromat for AP as well.
So, for anyone wondering how an achromat performs when used for AP, then wonder no more.
15 x 2min subs at ISO1600
Modded Canon 1000D
Long Perng 80mm f6 achromat
Williams Optics P-flat 88 field flattener
The first image is the full frame at 20% of full resolution, while the second image is a crop at 100% resolution to show the extent of the CA.
Processed with Pixinsight
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