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To improve my NB processing skills I thought I'd attempt the Wizard Nebula.

The image below is a bi-colour with Ha mapped to red and OIII mapped to blue and green. Since I didn't like the initial colours, I experimented with the Hue until I achieved colours that I liked for the nebula and star field.

Processed in Photoshop CC, CCDstack and PI, the image consists of 30min unguided subs and was taken with my Esprit 150 mounted on my GM1000HPS. 

Alan

59f82f8ab0d7a_20.Finaljpg.thumb.jpg.78f515e3a9fa7210b276a530d0bcaa73.jpg

 

LIGHTS: 16 Ha, 11 OIII x 1800s. DARKS: 30, FLATS:40, BIAS:100 all at -20C.

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    • By tooth_dr
      Taken on Sunday evening with a 98% Moon.
      Comprising of 12 x 600s subs using an ED80 with a 0.85x FF, an Atik 383L+ and a 7nm Optolong Filter.
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    • By alan4908
      An LRGB +Ha image of the Wizard nebula. The Ha was blended into the Lum and Red channels. I had quite a processing battle to get (what I hope) are the correct star colours. I found it particularly difficult to get the blue in the blue stars that are embedded in the red nebulosity. 
    • By alan4908
      An LRGB +Ha attempt at the Wizard nebula. I used the Ha as a booster for Lum and Red channels. Due to the combination of bright stars and bright red nebulosity, I did find this quite a challenge to obtain some (hopefully) accurate star colours. I've concluded that blue stars embedded in red nebulosity are difficult to process !
      The image represents just over 13 hours integration time. 
      Comments and criticisms are welcome.
      Alan

      LIGHTS: L:9,R:8,G:7,B:8 x 600s, Ha:16 x 1800s. DARKS:30, FLATS:40, BIAS:100 all at -20C.
    • By alan4908
      A bi-colour (HOO) image of the Wizard Nebula. 13.5hours integration time.  
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