IC1805 The Heart Nebula (Johannes Josefsen)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1805

IC1805 The Heart Nebula, Johannes Josefsen

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IC1805 The Heart Nebula

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IC1805 The Heart Nebula

2 Pane Mosaic

Been spending a lot of time experimenting with processing applications and workflows, using the tools I prefer from Astro Pixel Processor, PixInsight and Photoshop.

Workflow roughly as follows..

Astro Pixel Processor:

Calibration, registration and integration of all channels of each pane.

Stitch all channels of the mosaic seperately (R, G, B, Ha)

Combine RGB Mosaic

PixInsight - Halpha:

DBE

Deconvolution

Linear Noise reduction with TGVDenoise (Jon Rista method)

Masked Stretch

PixInsight - RGB:

DBE

Background Neutralization

Photometric Color Calibration (with BN again)

SCNR-Green

Linear Noise reduction with TGVDenoise (Jon Rista method)

Masked Stretch

Photoshop:

Extract red channel of RGB, and blend 25% with Ha image

Replace the red channel with the new Ha enhanced red channel

Use Ha as luminance (blend mode Ligten)

Many iterations of curves for adjusting contrast and vibrance / color saturation

Noel Carboni's astro actions for more noise reduction and star size reduction

Selective sharpening of details

Fixing some purple stars

Vibrance

Watermark

Resample at 50%

Original
Final
B

B

Description: Been working on a workflow with more natural colors, while still getting some of the fine details from the H-alpha data.

Uploaded: ...

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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
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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
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Star trails
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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	Basic success
Started	...
Astrometry.net job	2469365
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):

IC1805 The Heart Nebula

IC1805 The Heart Nebula

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B

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Image Index:

Contribution Index (beta):

IC1805 The Heart Nebula

IC1805 The Heart Nebula

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

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