M8 and M20 - Lagoon and Trifid Nebulae (MSFFT)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 4 Sgr · 7 Sgr · 9 Sgr · B296 · B85 · B88 · B89 · LBN 25 · LBN 26 · LBN 27 · LDN 180 · LDN 232 · Lagoon Nebula · M 20 · M 21 · M 8 · NGC 6514 · NGC 6523 · NGC 6526 · NGC 6530 · NGC 6531 · NGC 6546 · Sh2-25 · Sh2-28 · Sh2-30 · The star 4 Sgr · The star 5 Sgr · The star 7 Sgr · The star 9 Sgr · Trifid Nebula

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M8 and M20 - Lagoon and Trifid Nebulae

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M8 and M20 - Lagoon and Trifid Nebulae

M8, the Lagoon Nebula, and M20, the Trifid Nebula, were captured over 8.3 hours through and Ha narrowband filter. Pre-processing and linear processing in Pixinsight using DBE, Deconvolution, Multiscale Linear Transform, and Histogram Transformation. Non-linear processing includes HDR Multiscale Transform.

The original, and likely ultimate intent of this project was to create an HaRGB image but a combination of weather, low target altitude, and finicky guiding limited the ability to get the RGB elements. Guiding problems may be attributable to my guider integration times while shooting into an urban light dome. I probably could have adjusted the guide exposure time but decided to prioritize sleep!

Ultimately, this was great fun to capture - framing two Messier objects, not having to deal with multiple filters, and the narrowband minimizing the effects of light pollution from neighbors and the moon. I might have to wait another year to capture the RGB, but it's a start!

Thanks for looking!

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Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
Astrometry.net job	7586843
PixInsight job	CZGTTNIN4B2JTJ8JKV0WX8DI0VLYTDR4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h03m34s.54
RA (top/left)	18h08m02s.11
RA (top/right)	18h07m07s.93
RA (bottom/right)	17h59m12s.33
RA (bottom/left)	17h59m56s.60

Dec (center)	-23°36′14″.10
Dec (top/left)	-24°55′26″.3
Dec (top/right)	-22°09′13″.2
Dec (bottom/right)	-22°16′33″.7
Dec (bottom/left)	-25°03′04″.3

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M8 and M20 - Lagoon and Trifid Nebulae

M8 and M20 - Lagoon and Trifid Nebulae

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Image Index:

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M8 and M20 - Lagoon and Trifid Nebulae

M8 and M20 - Lagoon and Trifid Nebulae

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