Celestial hemisphere:  Northern  ·  Constellation: Vulpecula (Vul)  ·  Contains:  Dumbbell Nebula  ·  M 27  ·  NGC 6853  ·  The star 14Vul
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Dumbell Nebula (M27), Scott Denning
Dumbell Nebula (M27)
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Dumbell Nebula (M27)

Getting plate-solving status, please wait...
Dumbell Nebula (M27), Scott Denning
Dumbell Nebula (M27)
Powered byPixInsight

Dumbell Nebula (M27)

Equipment

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Acquisition details

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Description

Dumbell Nebula (M27) in Vulpecula, October 2019

8.5 hours total exposure with ASI 1600 on C8 EdgeHD @f7

R: 21 x 300s

G: 23 x 300s

B: 18 x 300s

Ha: 21 x 300s

O3: 19 x 300s

Following Chris Foster's fantastic PixInsight workflow

Aggressive culling of poorly focused & tracked subframes

Calibrated (w/Flat-Darks, not bias)

Cosmetic Corrected

Subframe Selected to eliminate bad subs

Star Aligned

Weighted in SFS (FWHM, eccentraicity, & SNR)

Integrated weighted subs w/ linear fit rejection

Linear Processing:

MUREDenoise each master

Deconvolve each master

DBE

Linear Fit to Green

Color combine RGB

Photometric Color Calibration

NBRGB Combination with Ha and O3

ABE and Background Neutralization

Histogram stretch by hand

Nonlinear Processing:

TGV Denoise (very gentle)

StarNet star reduction (2 iterations)

StarNet star mask

HDR Multiscale Transform to enhance nebula contrast

MLT Sharpening

Curves Transformation & Satboost

Comments

Sky plot

Sky plot

Histogram

Dumbell Nebula (M27), Scott Denning