Open Cluster M16 (NGC 6611), type 'e', in Serpens

RA 18:18.8 (h:m) DEC -13:47 (deg:m) Distance 7000 light years
Visual Brightness 6.4 (mag); Apparent Dimension 7.0 (arc min).

Open star cluster M16 has formed from this great gaseous and dusty cloud, the diffuse Eagle Nebula IC 4703, which is now caused to shine by emission light, excited by the high-energy radiation of its massive hot, young stars.

Source and more: SEDS


Wide field image of M16, M17 and M18
August 4, 2009 20:52 - 21:30 UT.
Imaging: 50mm SLR Photolens, Astronomik Ha filter; ATK16IC camera.
Exposures: Ha: 4x300s [1x1] unguided; RGB: not captured: these objects are very low in my skies and my imaging window is only 25 minutes ...

July 12, 2009 22:46- 23:18 UT.
Imaging: William Optics Zenithstar 80 ED II APO, f/6.8 [focal length 545 mm], Astronomik LRGB filters; ATK16IC camera.
Exposures: Ha: 8x240s [1x1]; RGB: not captured, unguided.

July 24, 2008 21:36 - 22:09 UT.
Imaging: William Optics Zenithstar 80 ED II APO with Meade 3.3 Focal Reducer at f/3 [focal length 240 mm], ATK16IC camera, Astronomik HaRGB filtera.
Exposures: Ha: 7x180s [1x1]; RGB 3x60s [2x2]; unguided.

July 24, 2008 21:36 - 21:55 UT.
Imaging: William Optics Zenithstar 80 ED II APO with Meade 3.3 Focal Reducer at f/3 [focal length 240 mm], ATK16IC camera, Astronomik Ha filter.
Exposures: Ha: 7x180s [1x1]; unguided.

July 16, 2006 21:38 - 22:05 UT and July 17, 2006 21:59 - 22:23 UT
On July 17, 2006 I captured the colour image with my LX200 10-inch f/10 telescope with 0.33 Focal Reducer operating at f/4.06 [focal length 1015mm],
Vesta Pro-SC3a colour camera, Baader Infra Red Blocking Filter.
30 unguided exposures of 40 seconds.
I combined this colour image with the b/w image I captured yesterday;
I determined the rotation angle and scale with Astrowave and used Photoshop for layering and colour adjustments.

July 16, 2006 21:38 - 22:05 UT
Imaged with LX200 10-inch f/10 telescope with 0.33 Focal Reducer operating at f/4.06 [focal length 1015mm],
Vesta Pro-SC3a b/w RAW camera, Astronomik H-Alpha Filter.
35 unguided exposures of 40 seconds.

July 14, 2006 22:23 - 22:25 UT
Imaged with LX200 10-inch f/10 telescope with 0.33 Focal Reducer operating at f/4.06 [focal length 1015mm],
Vesta Pro-SC3a b/w RAW camera, Baader Infra Red Blocking Filter.
28 unguided exposures of 5 seconds.

August 21, 2004 20:22 - 20:36 UT.
300mm SLR Photolens with SC3a colour camera.

August 14, 2004 20:47 - 21:19 UT.


July 26, 2004 21:46 - 22:32 UT.
This final image is a combination of a coloured image and a luminosity image.
Full details about the imaging and post processing method on my DSO imaging page.




July 26, 2004 21:46 - 21:51 UT.

This is just the luminosity layer.

July 18, 2003 22:25 - 22:30 UT
Imaging: TAL-2M 15 cm f/8 @ f/4.6, First light Vesta Pro-SC3.2a b/w.

July 18, 2003 22:25 - 22:30 UT
Imaging: TAL-2M 15 cm f/8 @ f/4.6, First light Vesta Pro-SC3.2a b/w.
Same image as above, but not yet coloured.