The Orion Nebula is the brightest diffuse nebula in the northern sky and also one of the brightest deepsky objects at all.
It is easily visible, even under moderately good conditions. It lies at a distance of about 1.300 light years.
The nebula is estimated to be approximately 24 light years across.
It contains a very young open cluster at the center, known as the Trapezium.
This nebula is one of the most photographed objects in the northern sky.
Still struggling with correct color balance and sufficient color data to get good color when using Ha as Luminance. Pre-blending Ha in the red channel did not help very much either.
I decided to go with a rather conservative processing for the final image.
The core of the nebula was re-created using a layer mask and a separate frame consisting of 100 images with exposure times of around 10 (RGB) to 15 seconds (Ha). This technique was used: Astropix.com – Combining 2 Different Exposures
Pressing one of the highlighted buttons will open a new window with an other size or version of the image above.
|Maximum size:||2000 x 1500px – LRGB Color (landscape)|
|Maximum size:||2000 x 1500px – LRGB Color (portrait)|
Click on the different tabs shown below to view the corresponding object, image and equipment information.
The last tab is used for any comments regarding the image, focus, framing, conditions etc.
|Name||:||M42 – The Orion Nebula|
|Right ascension||:||05h 35m 17s|
|Declination||:||-05° 23′ 28″|
|Other designations||:||NGC1976, Sharpless 281|
|Image date||:||Dec. 10-13, 2013|
|Light frames||:||25 4 min. G&B (each) 9x 5 min. R unbinned*
18x 15 min. 7nm Ha unbinned (Luminance)
|Total integration||:||9h 25m|
|Dark frames||:||18x Ha & 24x RGB unbinned|
|Flat frames||:||20x p. filter unbinned
Created with an A3 size Posterpoweruk flatfield panel
|Software used||:||CCDOps, CCDSoft, Maxim DL, Photoshop CS4, PixInsight LE|
|Processing||:||CCDOPS was used for focussing. Image Acquisition was done using CCDSoft.
All separate frames were calibrated, aligned and stacked in MaxIm DL5 Pro.
Photoshop CS4 was used for further processing – curves adjustment, levels adjustment, etc.
Noel Carboni’s toolset was used as well (Local Contrast Enhancement, Deep Space Noise Reduction)
PixInsight LE was used for DBE.
|Corrector||:||Televue 2″ TRF 2008 flattener/reducer with 15% decrease focal length: 384mm f/4.8|
|Guide camera||:||Atik 1HS Mono|
|Guide scope||:||Vixen VMC110L|
|Autoguide software||:||PHD Guiding|
|Filters||:||Baader 2″ 7nm Ha, Baader 2″ RGB + IDAS LPS-P2|
|Location||:||Landgraaf, The Netherlands|
|Comment||:||All exposures were taken through IDAS LPS-2 filter which was in front of the filter wheel.
CCD Temp was set at -15.
*Only 9 x 5 min. RED were taken but this was blended with 33% Ha.
Quite hazy conditions, humidity was above 80%.
Still struggling to find a correct color balance, especially when blending in Ha as Luminance. Pre-blending Ha into the red channel did not do much for better color balance.
Jan. 14, 2007
900 x 675px (Older DSLR color image)
Telescope : TMB 80/480 + Baader UHC-S
Mount : Losmandy G-11 + Canon 350D
Image data : 25 x 240 sec @ ISO400 = 1h 40m
Jan. 07, 2006
704 x 528px (Older DSLR color image)
Telescope : Orion USA 80/600 ED + Baader UHC-S
Mount : OTE150 + Canon 350D
Image data : 12 x 300 sec @ ISO800 = 1h 7m
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