M42 Unguided (Brent Newton)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 Ori A) · 41 Ori C · 41 Ori D · 43 Ori) · 44 Ori) · Great Orion Nebula · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1976 · NGC 1980 · NGC 1982 · Orion Nebula · The star Hatysa (ι Ori · The star Mizan Batil II (θ2 Ori · The star Trapezium (θ1 Ori A · The star θ1 Ori C · The star θ1 Ori D

M42 Unguided

Link: https://www.astronewton.com/astrophotography

M42 Unguided

Link: https://www.astronewton.com/astrophotography

Fun impromptu capture using my C8 + EOS RP (and a generous crop given the imaging circle limits on the C8). Few nebula are bright enough to justify a capture like this. I did have enough hardware to assemble a guiding solution for the C8 but the effort was not worthwhile for what amounts to taking 3 hours of potshots. Unguided, even using 30s exposures about 28% of the exposures were tossed due to bad tracking. I would be much more tempted to try this at 2000mm or even longer if the Seeing in KS was ever good enough to justify an attempt.

Pre-processing:
- Cosmetic Correction
- Subframe Weighing
- Star Align
- Drizzle Integration

Housekeeping:
- Crop
- DBE
- BlurX
- ImageSolver + SPCC
- Background Neut
- Downsample 50%
- StarX

Stars:
- ArcSinH
- HT
- SCNR, Inv, SCNR
- Curves Vibrance

Starless:
- Rista TGVD, MMT
- GHS non-linear stretch
- ACDNR
- L extracted

L Processing:
- Range selection mask
- HDRMT
- Several passes Unsharp mask

Color Processing:
- Several passes masked vibrance increases and a*/b* color tweaks
- Matched HDRMT and Unsharp from L steps
- L Combined back into Color
- Stars Blended back in
- Final color / contrast tweaks

Final
Original
B
C

B

Description: Starless Version

Uploaded: ...

C

Description: Annotated

Uploaded: ...

Fine Art Astrophotography
DSLR and mirrorless astrophotography
PixInsight Addicts
Central USA
Sharpless2 Objects

C8 Deep Sky Imaging

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Status	Basic success
Started	...
Astrometry.net job	7367195
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M42 Unguided

M42 Unguided

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M42 Unguided

M42 Unguided

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