Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  11.20  ·  346 Hermentaria  ·  B85  ·  LBN 27  ·  LDN 232  ·  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Sh2-30  ·  Trifid nebula
Messier 20 and Messier 21, Jenafan
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Messier 20 and Messier 21

Messier 20 and Messier 21, Jenafan
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Messier 20 and Messier 21

Equipment

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Acquisition details

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Description

The acquisition of this object was a two step work. After getting back dark nights in July I could expose some colour subs with my DSLR and in a mid-summer June night I gathered additional Ha signal.

The low rise of M20 above the horizon was a real challenge (bad seeing, massive refraction/dispersion -> PI ChannelMatch process).

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Histogram

Messier 20 and Messier 21, Jenafan

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Imaged with APT