Milky Way Galaxy – Lagoon Nebula
This is my stacked photograph of the Milky Way Galaxy, in addition it highlights both the Lagoon and Trifid Nebula. I took this photo at the Robert Ferguson Observatory while they were having their monthly star party, it was shot with a Sony Alpha A7Sii, Rokinon 135mm, iOptron Sky Tracker, Mefoto tripod and a SLIK leveling base. Finally I processed the image with RegiStar, Lightroom and Photoshop.
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 nebulae, it comes out 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 were 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 center a structure known as the Hourglass Nebula (so named by John Herschel), which should not be confused with the better known Hourglass Nebula in the constellation of Musca. In 2006 the first four Herbig–Haro objects were detected within the Hourglass, also including HH 870. Furthermore this provides the first direct evidence of active star formation by accretion within it.
Sony Alpha A7Sii
Rokinon 135mm f/2
25sec ISO 1600
10 images stacked
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