Celestial hemisphere:  Northern  ·  Constellation: Leo (Leo)  ·  Contains:  NGC 2903  ·  NGC 2905

Image of the day 02/19/2016

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    NGC 2903 - three processing revisions, rhedden
    NGC 2903 - three processing revisions
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    NGC 2903 - three processing revisions

    Image of the day 02/19/2016

    Getting plate-solving status, please wait...
      NGC 2903 - three processing revisions, rhedden
      NGC 2903 - three processing revisions
      Powered byPixInsight

      NGC 2903 - three processing revisions

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      Description

      NGC 2903 is a bright galaxy in Leo that shines at an overall magnitude of 8.9 and spans 12.6'. It is one of the brighter galaxies that Charles Messier might have included in his list, but did not. This image was acquired with some luminance data from a green/yellow zone on a really fine night with excellent seeing, with RGB data from a gray zone on a night of average seeing. The image was composed in LRGB mode, with the luminance channel being composed of both natural and synthetic luminance.

      The second revision has a little less blue in the outer arms of the galaxy.

      The third revision simply has the color saturation turned down. It was the overwhelming favorite when I posted a comparison with the second revision on Cloudy Nights.

      Comments

      Revisions

        NGC 2903 - three processing revisions, rhedden
        Original
        NGC 2903 - three processing revisions, rhedden
        B
        NGC 2903 - three processing revisions, rhedden
        C
      • Final
        NGC 2903 - three processing revisions, rhedden
        E

      E

      Description: Better software and processing techniques warranted a fourth revision of this image from five years ago. Star size, star colors, and details/noise reduction have all been improved.

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      NGC 2903 - three processing revisions, rhedden