Celestial hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  M 20  ·  M 21  ·  NGC 6514  ·  NGC 6531  ·  Trifid nebula
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M20 The Trifid Nebula, Shannon Calvert
M20 The Trifid Nebula
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M20 The Trifid Nebula

Getting plate-solving status, please wait...
M20 The Trifid Nebula, Shannon Calvert
M20 The Trifid Nebula
Powered byPixInsight

M20 The Trifid Nebula

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Description

I don't usually go after deep sky targets so close to a full moon, but I needed this one for a photography contest and didn't have a choice. My exposures tend to be around 2 minutes these days, but the sky was so bright that I had to knock them down to 90 seconds. The subframes were still quite washed out and low contrast, which had me worried, but with a stack of 75 there was enough signal to drag an image out of the murk and it turned out surprisingly well. It's actually very similar to an image I got from a much darker site last year, but with only 0.6 hours of integration time on that one and double the ISO.

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M20 The Trifid Nebula, Shannon Calvert