M8 NGC 6523
The Lagoon Nebula

Object Type Emission Nebula
Constellation Sagittarius
Magnitude 5.0
Size 45.0' x 45.0'

A large, bright emission nebula that is easily visible to the naked eye, M 8, also known as the "Lagoon Nebula" is a beautiful object in the telescope.

Visually, a bright cluster of stars (NGC 6523) dominates, with the nebula visible as a "fog" surrounding the stars. The prominent dark lane that gives the nebula it "Lagoon" title, is visible in a 4" telescope under dark skies. Unfortunately the red colour of the nebula is not visible to the eye.


Film Images



43 minutes exposure, Kodak Ektachrome 100 slide film.
300mm f/2.8 Canon lens.


40 minures exposures, Konica 3200 film.
6" f/3.75 schmidt-newtonian, prime focus.

In the centre of the above image is a very faint nebula surrounding a star. This is Sharpless 2-22. The star in the middle is the 7th magnitude SAO 185928.


45 minures exposure, Fuji Super HG II 400 film.
5" f/5 refractor, prime focus.

To the north (above) of M8 is the emission nebula, M20, also known as the Trifid Nebula. further to the north is the scattered open cluster, M 21. In between the Lagoon and Trifid nebulae are two faint emission nebulae. The one to the west is Sharpless 2-26 and the one to the east is NGC 6526. Also, there are nearly a dozen additional open clusters in the photograph.


45 minures exposure, Fuji Super HG V 400 film.
5" f/5 refractor, prime focus.

To the east (lower right) of M 8 is a complex region of reflection and emission nebulae surrounding the 7.6 magnitude B0 star SAO 186366. This nebulae has several designations, including NGC 6559, IC 1274, IC 1275 and IC 4685. The yellowish cluster to the lower right of M 8, is the globular cluster NGC 6544


45 minures exposure, on Fuji Super HG V 400 film.
300mm f/6 newtonian telescope at prime focus.


DSLR Images



291 second exposure. Modified Canon Digital Rebel DSLR camera.
5" f/5 refractor at prime focus.


Combination of the above image and a 377 second exposure of M20.
Modified Canon Digital Rebel DSLR camera. 5" f/5 refractor at prime focus.


CCD Images


Combination of 20, 5 minute images using an h-alpha filter.
SBIG ST-8XE CCD camera. 5" f/5 refractor at prime focus.


Combination of 20, 5 minute images using an h-alpha filter.
SBIG STL-1001E CCD camera. 5" f/5 refractor at prime focus.


Combination of 15, 3 minute images using red, green and blue filters.
SBIG ST-9XE CCD camera. 5" f/5 refractor at prime focus.


Combination of 40, 1 minute images using red, green and blue filters.
SBIG STL-1001E CCD camera. 5" f/5 refractor at prime focus.