Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  HD122865  ·  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  Pinwheel galaxy
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Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P
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Messier 101 : Galaxy in Ursa Major - LRGBHa

Revision title: Re Processed in 2023

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Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P
Powered byPixInsight

Messier 101 : Galaxy in Ursa Major - LRGBHa

Revision title: Re Processed in 2023

Equipment

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Acquisition details

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Description

This is a 2 panels mosaic acquired with a 12" SCT over the nights of 9, 11, 14 & 21 of February, 5, 26, 30 & 31 of March and 1 & 2 of April 2022.

Another 2.75 hours of RGB wider field data was acquired with the APO 115 to correct some color gradients in the mosaic. The origin of these gradients were later identified as reflections of light on an unpainted piece of equipment and corrected.

The version B has been processed by my friend Piet, who used HDR in PI and Topaz denoising.

Comments

Revisions

  • Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P
    Original
  • Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P
    B
  • Final
    Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P
    C

C

Title: Re Processed in 2023

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Sky plot

Sky plot

Histogram

Messier 101 : Galaxy in Ursa Major - LRGBHa, Daniel.P