Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5457  ·  The star 86UMa
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M101 - Equipement test - LRGB under SQM 18, Axel
M101 - Equipement test - LRGB under SQM 18
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M101 - Equipement test - LRGB under SQM 18

Getting plate-solving status, please wait...
M101 - Equipement test - LRGB under SQM 18, Axel
M101 - Equipement test - LRGB under SQM 18
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M101 - Equipement test - LRGB under SQM 18

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Description

This a test image with my usual Canon 200mm + asi 1600mm and LRGB filters (ZWO). I have insane LP and recorded SQM values ranging from 18.25 to 18.66.

Under these conditions colors are washed out, gradients are crazy and faint signal is just out of reach (unless you spend hundreds of hours). Anyway it is better than 0 imaging

The combo works well the lens is wide open and stepped down with rings to F4.5. I have tilt but no solution as to solve it

If you think that M101 is lost in space check out the platesolved revision and you may consider thinking otherwise ;)

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  • Final
    M101 - Equipement test - LRGB under SQM 18, Axel
    Original
  • M101 - Equipement test - LRGB under SQM 18, Axel
    B

B

Description: Platesolved image with the PGC catalog

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M101 - Equipement test - LRGB under SQM 18, Axel