Late season M8 from lockdown central – My light polluted suburban backyard, Bortle 7 -Melbourne Australia.
A return to my narrowband roots, just 5+ hrs of data processed with the usual J-P Metsavianio tone mapping and a tweak or two inspired by Eric Coles Histogram balancing method.
Fortunately, it’s a very bright target!
Ha – 12x600secs
O3- 5 x 900 secs
S2- 8x 900secs
Captured using Ekos on a Mac.Processed in APP & PS CC 2020 – Reprocessed November 2020 with Topaz NR
Taken from my light polluted suburban backyard in Melbourne.

M8 lagoon nebula Narrowband
M8 lagoon nebula Narrowband

Capture Details

TelescopeTakahashi TOA 130 + Flattener 67
CameraQSI 6162 WSG8
MountTakahashi NJP Temma 2
FiltersChroma 5nm Ha & S2, 3nm O3
Guiding CameraStarlight Xpress Lodestar X2
Integration time (Exposure)5.2 hrs
LocationBurwood, Melbourne, Victoria, Australia
DateSept, 2020

About this Nebula

Commonly known as the Lagoon Nebula, M8 was discovered in 1654 by the Italian astronomer Giovanni Battista Hodierna, who, like Charles Messier, sought to catalog nebulous objects in the night sky so they would not be mistaken for comets. This star-forming cloud of interstellar gas is located in the constellation Sagittarius and its apparent magnitude of 6 makes it faintly visible to the naked eye in dark skies. The best time to observe M8 is during August.

Located 5,200 light-years from Earth, M8 is home to its own star cluster: NGC 6530. The massive stars embedded within the nebula give off enormous amounts of ultraviolet radiation, ionizing the gas and causing it to shine. In this image of the centre of the Lagoon Nebula, dust masks most of the objects within. This image maps the emission from the nebula’s ionized gases of Hydrogen, Ionized oxygen & ionized sulphur.(text from Nasa).


A Lagoon for Moana

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“There’s more beyond the reef.”

- © Disney "Moana"