Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  Bode's Galaxy  ·  Cigar Galaxy  ·  M 81  ·  M 82  ·  NGC 3031  ·  NGC 3034  ·  NGC 3077
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M81 & M82 + IFN in HαLRGB, Brent Newton

M81 & M82 + IFN in HαLRGB

Getting plate-solving status, please wait...
M81 & M82 + IFN in HαLRGB, Brent Newton

M81 & M82 + IFN in HαLRGB

Equipment

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Acquisition details

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Description

Some data from Spring 2020 I kept putting off. Unfortunately this was taken under borderline Bortle 5 skies, so the IFN was much less pronounced than I hoped

Preprocessing:

- Darks, Flats calibration, Cosmic Correction
- Subframe Weighing, Star Align, Local Normalization
- Drizzle Integration

Housekeeping:
- Crop
- DBE
 - LFIt R, B to G
 - RGB Combine

Hα Processing
 - Decon
 - Rista TGVD, MMT
 - Downsample 50%
 - StarNet2

L Processing:
- Decon
 - Rista TGVD, MMT
 - Downsample 50%
 - Blended in Hα detail
 - GHS + HT stretch
 - Final MMT NR

RGB Processing:
- Photometric CC
- Blended Hα details
- SCNR G
- Rista TGVD, 2 passes MMT
- GHS + HT stretch
- MMT CNR
- Bills Star Reduction
- Curves Color and Contrast tweaks
- Annotation

Comments

Revisions

  • M81 & M82 + IFN in HαLRGB, Brent Newton
    Original
  • Final
    M81 & M82 + IFN in HαLRGB, Brent Newton
    C
  • M81 & M82 + IFN in HαLRGB, Brent Newton
    D

C

Description: 2022 Reprocess

Uploaded: ...

D

Description: Annotated

Uploaded: ...

Sky plot

Sky plot

Histogram

M81 & M82 + IFN in HαLRGB, Brent Newton

In these public groups

WO Star 71
Central USA

In these collections

ASI1600MM-P 350mm FL
DSO