Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  Pinwheel galaxy
Pinwheel Galaxy (M101) from < 1" seeing, KuriousGeorge
Powered byPixInsight

Pinwheel Galaxy (M101) from < 1" seeing

Pinwheel Galaxy (M101) from < 1" seeing, KuriousGeorge
Powered byPixInsight

Pinwheel Galaxy (M101) from < 1" seeing

Equipment

Loading...

Acquisition details

Loading...

Description

Sorry, I'm a little late to the M101 party. (-:

I wasn't planning on shooting M101 this year. But I changed my plans while working on NGC6340 and neighbors in Draco (Deep). The seeing was just too good to pass it up.

I could only get good results from 9:15 PM to around 11:30 PM. So it took over a week to collect what you see here.

The 32 15-minute luminance subs were between 1.42" and 2.32". Average was 2.03" before deconvolution. Given seeing is usually measured as described here, we suspect this is seeing under 1".

So here's my late 2020 M101 contribution to Astrobin – with a little touch of Ha to finish it off. (-:

Comments

Revisions

    Pinwheel Galaxy (M101) from < 1" seeing, KuriousGeorge
    Original
  • Final
    Pinwheel Galaxy (M101) from < 1" seeing, KuriousGeorge
    C

C

Description: All-new processing using BlurX and NoiseX. The most noticeable improvement I see is in contrast. But that's a result of me using PI HDR rather than PS Shadows in the original version. Noise and resolution seem to be about the same.

Uploaded: ...

Sky plot

Sky plot

Histogram

Pinwheel Galaxy (M101) from < 1" seeing, KuriousGeorge