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Old 21-01-2018, 04:39 PM
RichardJ (Richard)
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RichardJ is offline
Join Date: Feb 2009
Location: Carlingford
Posts: 733
Astroimaging with an achromatic refractor

I was imaging the other night with my 150mm F5 Newtonian and whilst waiting for some high cloud to clear I thought I would see what sort of image I could get with my Canon 600D DSLR, 2" Baader UHC-S L Booster filter and a 102mm F5 achromatic refractor. I left the coma corrector in for the shot with the Baader filter. These are single shots.

I was surprised and pleased by the result considering the cost of an ED or APO scope. I also tried the combination on the Rosette and Horsehead and got some good results. I also tried the Baader Semi APO filter and in my opinion thought the UHC-S filter was a bit better.

I'd be interested in other people's experience with filters and achromats.

Attached Thumbnails
Click for full-size image (M42_102MM ACHROMAT.jpg)
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Click for full-size image (M42_102MM ACHROMAT_UHC-S L BOOSTER.jpg)
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Last edited by RichardJ; 21-01-2018 at 05:54 PM.
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