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Thread: M 27 in bicolor

  1. #1
    Member Daniel_Sp's Avatar
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    M 27 in bicolor

    Hello everybody,
    about two years ago, I tried to make a bicolor of M 27. [OIII] is encoded in blue, H-beta is encoded red. In addition I generated a synthetic green channel from the sum of [OIII] and H-beta. The sketches I made during oberserving were made again with the same size, scanned and summed with color encoding. This is the result:
    summe_2.jpg

    I observed with a 24" dobsonian.

    CS, Daniel
    24"-Dobson, f/4.16

  2. #2
    Member Howard B's Avatar
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    Excellent drawing Daniel, and an impressive way to make a color image. How did you combine your drawings into the final image?
    Howard
    30-inch f/2.7 alt-az Newtonian
    https://sites.google.com/site/howardbanichhomepage/
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    Contributing Editor, Sky & Telescope magazine

  3. #3
    Member Ivan Maly's Avatar
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    Interesting work!

  4. #4
    Member Daniel_Sp's Avatar
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    Hey guys,
    thanks!
    @ Howard: It's pretty easy - I use the program imageJ. Its for free and originally made for usage in medicin. You can split a color image in its RGB channels or merge black/white images with color encoding to a merged color image.

    Best regards
    Daniel
    24"-Dobson, f/4.16

  5. #5
    Member akarsh's Avatar
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    Wow, this is amazing! Very interesting idea!
    18" f/4.5 Obsession dob "Romela"
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