Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034
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M81 and M82 2021-03-07, Greg Harp
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M81 and M82 2021-03-07

Getting plate-solving status, please wait...
M81 and M82 2021-03-07, Greg Harp
Powered byPixInsight

M81 and M82 2021-03-07

Equipment

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Acquisition details

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Description

This is just RGB data captured with a OSC. I need to swap over to the mono camera and capture the Ha signal that is abundant in both of these galaxies. This is by far the longest integration of OSC data I've captured. There's a bit of noise left, but I did zero noise reduction of this except for SCNR. I find that long integrations do so much to reduce noise that I'm willing to live with what remains in order to preserve fine detail.

The stars kind of suck here. I need a better coma corrector. I thought the Baader MPCC III was supposed to be good, but it seems to soften the stars and still shows a lot of coma at the edges. I just ordered the TS one (the 72mm triplet rather than the 100mm quadruplet) so we shall see if that improves things...

Comments

Revisions

  • M81 and M82 2021-03-07, Greg Harp
    Original
  • Final
    M81 and M82 2021-03-07, Greg Harp
    C

Sky plot

Sky plot

Histogram

M81 and M82 2021-03-07, Greg Harp

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