The Lagoon Nebula (catalogued as Messier 8 or M8, and as NGC 6523) is a giant interstellar cloud in the constellation Sagittarius. It is classified as an emission nebula and as a H II region.
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′, 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).
Imaging telescopes or lenses: GSO Newton 12″ f/4
Imaging cameras: ATIK 11000m
Mounts: Skywatcher EQ8
Guiding telescopes or lenses: Orion 50 mm mini guider
Guiding cameras: Orion Star Shoot Planetary Imager & Autoguider
Focal reducers: ASA Wynne 3″ Corrector 0.95x
Software: photoshop, CCDStack, Maxim DL
Filters: Orion 2” LRGB filter set, Baader Ha 2″
Dates: April 4, 2014
Integration: 1.6 hours
Author: Paul Storey
AstroPhotography of the day by SPONLI 20 July 2014