Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  35 And  ·  Andromeda Galaxy  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224  ·  The star 32 And  ·  The star ν And

Image of the day 09/30/2024

    The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
      The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg

      The Andromeda Galaxy (M31) in HaOIIILRGB

      Image of the day 09/30/2024

        The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
          The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg

          The Andromeda Galaxy (M31) in HaOIIILRGB

          Equipment

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          Acquisition details

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          Description

          I spent the most of my Andromeda season in 2023 gathering narrowband data. My objective was to collect sufficient information, especially in emission lines such as Oiii (Oxygen III) and Ha (Hydrogen-alpha). Unfortunately, a shortage of high-quality LRGB (Luminance, Red, Green, and Blue) data under dark skies prevented me from finishing the project. This reduced the final image's required level of overall clarity and color accuracy.

          I went to the Lika Star Party this year, and the dark sky conditions were fantastic. At last, I managed to get the LRGB data that was lacking to finish the project. The results were considerably cleaner and more detailed thanks to the notable improvement in sky quality.

          The final stack of images has a total exposure of 80 hours, of which 40 hours are devoted to the collection of Oiii data. In the end, LRGB, HaLRGB (adding Hydrogen-alpha data), OiiiLRGB (adding Oxygen III data), and HaOiiiLRGB (combining both Ha and Oiii with LRGB) are the various combinations of data displayed in a mosaic. Every iteration showcases distinct characteristics and spotlights different elements of the Andromeda galaxy. 

          My goal was to combine narrowband with LRGB but to still maintain that simplicity of broadband images with newly discovered STROTTNER-DRECHSLER-SAINTY OBJECT 1 aka. The Oiii Ark. Hope you enjoy it. 

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          • Final
            The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
            Original
            The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
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            The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
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            The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg
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          Title: LRGB

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          G

          Title: HaLRGB

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          H

          Title: OiiiLRGB

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          Sky plot

          Sky plot

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          The Andromeda Galaxy (M31) in HaOIIILRGB, Robert Žibreg