w1800 20190827 M8 A7Ra ISO3200 12x30s

The Lagoon Nebula (catalogued as Messier 8 or M8, NGC 6523, Sharpless 25, RCW 146, and Gum 72) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as an H II region.
The Lagoon Nebula is one of only two star-forming nebulae faintly visible to the eye from mid-northern latitudes. Seen with binoculars, it appears as a distinct oval cloudlike patch with a definite core. Within the nebula is the open star cluster NGC 6530.

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.

ObjectM8 or NGC 6523 - Lagoon Nebula
incl. Open Cluster NGC 6530
Constellation: Sagittarius
Position: RA 18h 03m 37s DEC −24° 23′ 12″
Apparent Size: 90 × 40 arcmin
Apparent Magnitude/surface brightness: +6.0 /
Distance (average) 4,100 ly
  
Photo Datas 
Date 27.08.2019, 20:51 UTC
Location Knottenried/Oberallgäu, 1002m ASL
GPS: 47°36’13“ N, 10°11’24“ E
Sky darkness SQM-L Zenit 20.65mag/sqrsec, Object 20.60mag/sqrsec
Ground Temp./Air Pressure 18.5°C /1016mbar
Thermal sky temp./weather  -27.0°C Zenit / high altitude haze
Seeing  4/10 
Telescope TS RC 14" 2845mm f/8.0
Camera Sony A7Ra mod @ T sensor=21.6°C !!
Expose frames ISO 3200, RAW 12x30s, 16 darks
Total expose
6 min.
Filter no
Mount HPS 10Micron GM 3000
Guiding Cam no
Software DSS 3.3.4, Photoshop CC
Remarks Quick snapshot due to no having more time!

C 2019 Peter Cerveny