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Contains:  NGC 6530, M 8, Lagoon nebula, Hourglass nebula, NGC 6523, NGC 6526, The star 9Sgr, The star 7Sgr
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M8 the Lagoon Nebula, 





    
        

            Bret Waddington
M8 the Lagoon Nebula

M8 the Lagoon Nebula

Technical card

Resolution: 4049x2696

Dates:July 7, 2019

Frames: 57x120" (gain: 50.00) -10C bin 1x1

Integration: 1.9 hours

Darks: ~30

Flats: ~30

Bias: ~75

Avg. Moon age: 5.28 days

Avg. Moon phase: 28.32%

Bortle Dark-Sky Scale: 4.00

Astrometry.net job: 2948724

RA center: 271.031 degrees

DEC center: -24.313 degrees

Pixel scale: 0.851 arcsec/pixel

Orientation: 2.868 degrees

Field radius: 0.575 degrees

Locations: Driveway, Davis, Illinois, United States

Data source: Backyard

Description

The Lagoon Nebula is estimated to be between 4,000-6,000 light-years from the Earth. In the sky of Earth, it spans 90' by 40', which translates to an actual dimension of 110 by 50 light years. Like many nebulas, it appears pink in time-exposure color photos but is gray to the eye peering through binoculars or a telescope, human vision having poor color sensitivity at low light levels. The nebula contains a number of Bok globules (dark, collapsing clouds of protostellar material), the most prominent of which have been catalogued by E. E. Barnard as B88, B89 and B296. It also includes a funnel-like or tornado-like structure caused by a hot O-type star that emanates ultraviolet light, heating and ionizing gases on the surface of the nebula. The Lagoon Nebula also contains at its centre a structure known as the Hourglass Nebula (so named by John Herschel), which should not be confused with the better known Engraved Hourglass Nebula in the constellation of Musca. In 2006 the first four Herbig–Haro objects were detected within the Hourglass, also including HH 870. This provides the first direct evidence of active star formation by accretion within it.

Wikipedia

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Bretw
Bret Waddington
License: None (All rights reserved)
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M8 the Lagoon Nebula, 





    
        

            Bret Waddington

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