Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Cigar Galaxy  ·  M 82  ·  NGC 3034
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M82 (Deeper), KuriousGeorge
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M82 (Deeper)

Getting plate-solving status, please wait...
M82 (Deeper), KuriousGeorge
Powered byPixInsight

M82 (Deeper)

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Description

Didn't think I could get deeper than my prior attempt with 28 hours of 5 nm Ha captured by Adam Block in his 32" - with the moon out...

Prior "Deep" attempt

Here's my 20 hours of 5 nm Ha captured over the last 4 days between 8:30 PM and 1:30 AM PST. I was pleased to discover I could get noticeably deeper with 24" vs 32" and 20 hours vs 28 hours - but no moon with a 21.3 SQM sky all 4 days.

Red-colored Ha was very carefully screened over LRGB to preserve all the Ha detail. Adam's stacked and deconvolved Ha has 1.78" FWHM vs my 1.92" FWHM, so there's a minor loss of Ha detail. The deeply exposed M82 core in Ha was significantly dimmed using both PI HDR and PS Shadows/Highlights to help preserve the natural RGB after the Ha screening process.

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M82 (Deeper), KuriousGeorge