Celestial hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  M 84  ·  M 86  ·  M 87  ·  M 88  ·  NGC 4371  ·  NGC 4374  ·  NGC 4388  ·  NGC 4402  ·  NGC 4406  ·  NGC 4425  ·  NGC 4435  ·  NGC 4438  ·  NGC 4452  ·  NGC 4459  ·  NGC 4461  ·  NGC 4473  ·  NGC 4477  ·  NGC 4486  ·  NGC 4501  ·  Virgo Galaxy
Markarian's Chain (2x2 mosaic), Arnau Romaguera Camps
Markarian's Chain (2x2 mosaic)
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Markarian's Chain (2x2 mosaic)

Markarian's Chain (2x2 mosaic), Arnau Romaguera Camps
Markarian's Chain (2x2 mosaic)
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Markarian's Chain (2x2 mosaic)

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Description

See in full resolution. 2x2 mosaic of the great Markarian's chain of galaxies. SGP was used for capturing and framing with a 20% overlap. All frames were captured in a single night. For each frame of the mosaic 8 frames of 300s were calibrated with flats, darks and bias and stacked individually with DSS, then saved as 16bit tiff. Initial post processing on individual frames was done with Adobe PS for the levels and curves. AstroFlat Pro filter plugin was very helpful to further remove background gradients coming from uneven field or light pollution not removed by flats that would cause BG artifacts in the merged mosaic. The 4 individual frames were finally combined using Image Composite Editor tool from Microsoft and further post-processed using Noel Carboni's Action set for Adobe PS.

Comments

Revisions

  • Markarian's Chain (2x2 mosaic), Arnau Romaguera Camps
    Original
  • Final
    Markarian's Chain (2x2 mosaic), Arnau Romaguera Camps
    B

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Markarian's Chain (2x2 mosaic), Arnau Romaguera Camps