M27 - The Dumbbell Nebula (lefty7283)

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

Powered byPixInsight

M27 - The Dumbbell Nebula

**PixInsight Processing:**

**Linear:**

* BatchPreProcessing

* StarAlignment

* [Blink](https://youtu.be/sJeuWZNWImE?t=40)

* ImageIntegration

* DrizzleIntegration (2x, VarK=1.5)

* DynamicCrop

* DynamicBackgroundExtraction

* Deconvolution

* [EZ Denoise](https://darkarchon.internet-box.ch:8443/)

* Duplicated Ha and Oiii channels for **Core Stretch**

**Core Stretch:**

* ArcsinhStretch with highlights preserved per channel

* Pixelmath to combine channels (formula courtesy of /u/foraxx)

> Factor f= (Ha\*Oiii)\^~(Ha*Oiii)

> R= Ha

> G= f\*Ha + ~f*Oiii

> B= Oiii

* EZ HDR

**Aggressive Stretch:**

* EZ Soft Stretch

* Pixelmath to combine channels

> Same formula as above

**Nonlinear Processing:**

* Pixelmath to combine soft stretch and core stretch images

> 0.5\*Soft + 0.5*Core

* EZ HDR

* Shitloads of [Curve](https://i.imgur.com/2rkBRUO.jpg)Transformations to adjust lightness, hue, saturation, contract, etc. (with various masks to affect/protect different parts of the image)

* Extract L > LRGBCombination for chrominance noise reduction

* ACDNR

* PhotometricColorCalibration (some attempt at fixing star colors)

* Invert > SCNR > Invert

* LocalHistogramEqualization

* MorphologicalTransformation to reduce star sizes (starnet mask)

* MultiscaleLinearTransform

* Resample to 90%

* Annotation

Fast Newtonians
Narrowband imaging
ZWO ASI1600MM/QHY163M
Suburban Astrophotography
/r/astrophotography

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	3761299
PixInsight job	BAX4HUSWGD7QN0Y4SDWNYT1YWVZ2EGQA
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	19h59m36s.350
RA (top/left)	19h57m10s.907
RA (top/right)	20h00m31s.452
RA (bottom/right)	20h02m01s.948
RA (bottom/left)	19h58m40s.864

Dec (center)	+22°43′16″.43
Dec (top/left)	+22°39′42″.62
Dec (top/right)	+22°12′01″.19
Dec (bottom/right)	+22°46′41″.10
Dec (bottom/left)	+23°14′29″.87

Image Index:

Contribution Index (beta):

M27 - The Dumbbell Nebula

M27 - The Dumbbell Nebula

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Image Index:

Contribution Index (beta):

M27 - The Dumbbell Nebula

M27 - The Dumbbell Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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