M 42 Great Orion Nebula                  Click on photo to return to 'Diffuse Nebulae'                          Home
 

M 42    NGC 1976    Great Nebula in Orion, Orion Nebula

Other description: Nebula.
Constellation:  Ori
Dreyer description: A magnificent (or otherwise interesting) object! Theta1 Ori and the great nebula; = M42.
Magnitude:  4.0
RA: 05h 35m 24.0s  Dec: -05°27'00"  (Epoch 2000)
Rise: 17:21  Transit: 23:05  Set: 04:53
Size:66.0'

SEDS description;
The Orion Nebula is famous for a number of reasons. It is the nearest bright nebula to us and can be seen with the naked eye. Its brightness led to it being the first nebula ever photographed (in 1882) and its proximity (1500 light years) means that we know more about it than any other star-forming region. It is also in a very active stage of star formation and it is perfectly placed for us to explore the intimate details of the birth of stars.

The inner regions are glowing mainly in the red light of excited hydrogen, which together with some green emission from oxygen give the centre of the nebula a yellowish colour. The energy for this spectacular display comes from the small cluster of stars in the brightest part of the nebula.

Photo Specifications:

     TELESCOPE:  80 mm Celestron APO  F/8
            CAMERA:  'SBIG' ST-8XE & CFW8 color filter wheel
CAMERA TEMP:  Temp. = -18 C
                   DATE: 12/27/07

Filter
Total
Exposure  time
Sub-frame
 Exposure time
Number  of Sub-frames
Binning
Luminance
15 min
300 sec
3
1x1
Red
15 min
300 sec
3
1x1
Green
15 min
300 sec
3
1x1
Blue
24 min
480 sec
3
1x1
Other





Processing:    MaxIm; calibrate,  DeBloom (Ron Wodaski), color combine, CCDstack align,  Photoshop CS2