The Lagoon Nebula, M8 (Paul Lloyd)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: 7 Sgr · 9 Sgr · B296 · B88 · B89 · HD164266 · HD164385 · HD164386 · HD164536 · HD164865 · HD164906 · HD164933 · HD165016 · HD165052 · HD165246 · HD165321 · HD165345 · HD315031 · HD315033 · LBN 25 · LBN 26 · LDN 180 · Lagoon Nebula · M 8 · NGC 6523 · NGC 6526 · NGC 6530 · Sh2-25 · The star 7 Sgr · The star 9 Sgr

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The Lagoon Nebula, M8

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The Lagoon Nebula, M8

The Lagoon Nebula has been known for quite some time, having been discovered before 1654
by Hodierna. It is one of a few star-forming regions visible to the unaided eye at mid-northern
latitudes. It lies some 4,100 ly away, and is huge, measuring at 50 x 110 ly. This is an emission
nebula, with both H-α and H-β being prominent. It is host to a number of distinct structures
and star clusters, including NGC 6523, NGC 6530 (star clusters), and the Hourglass Nebula
around the hot O-type star near the centre.

In this image I have used a filter that passes H-α, H-β and O-III emission lines. This gives a
more colourful image at the expense of partly obscuring the complex structure of the nebula
cloud.

Telescope: Askar PHQ107 f/7 refractor (f = 750mm)
Camera: ZWO ASI294MC Pro
Exposure: 36 x 300 sec, Optolong L-eNhance filter
Bortle 3-4 sky, Moonless
Field of View: approx. 1º 25’ x 1º 00’
Image processed and prepared in PixInsight and Photoshop Elements

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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
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Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
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	8546638
PixInsight job	VIIR44719XUY25DY9BTL9YOGQVM84KDK
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h04m15s.64
RA (top/left)	18h07m18s.11
RA (top/right)	18h01m11s.59
RA (bottom/right)	18h01m09s.71
RA (bottom/left)	18h07m19s.49

Dec (center)	-24°20′13″.3
Dec (top/left)	-23°50′21″.5
Dec (top/right)	-23°50′17″.4
Dec (bottom/right)	-24°50′03″.4
Dec (bottom/left)	-24°50′05″.4

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The Lagoon Nebula, M8

The Lagoon Nebula, M8

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