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coatesg

Eagle and Swan in H-Alpha (M16, M17, M18)

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Managed a bit of further processing on data captured on holiday - this field of view is something I would really struggle with at home (it's 9 degrees lower, and doesn't rise above my roof from my garden!) - a widefield of the Eagle (M16), Swan/Omega (M17) and M18, as well as a lot of HII in the surrounding areas. The HA filter helped a lot in cutting through the atmosphere - it's not fantastically high from the site we were at, and I still had to have a couple of nights at it dodging the trees.

Details:
QHY163M + Canon 200mm f2.8L (@f3.85) + Baader 7nm HA filter, mounted on a Losmandy GM8.
Exposure 2h50m in 5min subs. Binned a few subs as they were of poor quality. 

Processing in PI. Thanks for looking :)

At 50% resolution:

M16_M17_HA_50perc.thumb.jpg.dc7ef388426fed7ef2911e6a9fb7e9b3.jpg

Partially annotated version (lots of unmarked catalogues not shown, and not sure why Sh2-47 is marked away from the actual object! :

M16_M17_HA_annotated.thumb.jpg.4b3fd63c3aaf88ac2fecc0ec595bbfaf.jpg

 

Edited by coatesg
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40 minutes ago, tooth_dr said:

Holy macaroni I’m glad I opened this thread. Stunning image

? Thanks! Was just glad to be able to get that low in declination!

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I have a 105mm F2.8 and an adapter for my CCD so this is great inspiration to get my ass in gear and try it out. 

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