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Horsehead and flame nebula


shaunster


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Astro imaging

· 28 images
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  • 59 image comments


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Very nice, Shaun!

One thing: I hope I'm wrong, but the diffraction rings around Alnitak suggest a touch of astigmatism (star off-centre, slight elongation). Might be worth checking that nothing is slightly tilted or off-axis. (If it's just imaging/processing artefacts, I apologise and I'll get me coat... :-) )

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Thanks all :icon_salut:

My tube rings are very... I mean a very tight fit ... they could be pushing on the focuser and maybe pushing it out slightly. I will take a look

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