M27 - The Dumbbell Nebula (Steve Ludwig)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: 14 Vul · Dumbbell Nebula · M 27 · NGC 6853 · PK060-03.1 · The star 14Vul

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M27 - The Dumbbell Nebula

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M27 - The Dumbbell Nebula

Equipment

- Main scope: Bresser Messier 10" Newton (254/1270)

- Main camera: Nikon D3300 (unmodified)

- Guide scope: Orion AC 50/162 Deluxe Mini

- Guide camera: ZWO ASI 290MC

- Mount: Skywatcher EQ6-R

- Explore Scientific HR coma corrector

Acquisition

- 28 lights x 300 s = 2 h 20 min

- no dark, flat, bias frames

- no filters

- ISO 800

- Bortle 4

Processing

- stacked in DSS

-> bilinear debayer method & median kappa sigma clipping

- unmodified TIF opened in PixInsight

-> STF stretch

-> dynamic crop

-> dynamic background extraction

-> background neutralization

-> color calibration

-> histogram transformation

-> curves transformation

-> local histogram equalization

-> resample 50%

-> ACDNR

-> separated stars with Starnet++

-> multiscale linear transform on stars only

-> pixel math to recombine stars and background

-> saved as jpg

Original
Final
H

H

Description: Instead of the DBE process, I used a synthetic flat this time. This allowed me to use the full FOV, as I got rid of internal reflection artifacts in the corners of the image.

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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Status	Advanced success
Started	...
PixInsight job	83T61QILRDU0UBWADEKRQQSA6NDUCR0O
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h59m39s.15
RA (top/left)	19h57m04s.56
RA (top/right)	20h00m55s.48
RA (bottom/right)	20h02m14s.30
RA (bottom/left)	19h58m22s.32

Dec (center)	+22°40′51″.8
Dec (top/left)	+22°36′27″.9
Dec (top/right)	+22°09′34″.3
Dec (bottom/right)	+22°45′05″.3
Dec (bottom/left)	+23°12′09″.4

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M27 - The Dumbbell Nebula

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M27 - The Dumbbell Nebula

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