NGC 7635 - Bubble Nebula (jeremy.wiggins)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · NGC 7635 · Sh2-162

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NGC 7635 - Bubble Nebula

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NGC 7635 - Bubble Nebula

Pre-processing (PixInsight 1.8.5)

1. Master Dark Generation

2. Calibrate Lights w/ Darks

3. Cosmetic Correction

4. Star Alignment

5. Local Normalization

6. Image Integration

7. Drizzle Integration

Processing (PixInsight 1.8.5)

1. Star Align the stacked images

2. Dynamic Crop

3. Automatic Background Extraction

4. Dynamic Background Extraction

5. TGV Denoise using a bright, low contrast mask (inverted) with a luminance mask for local support

6. Masked Stretch

7. On the OIII image only, a couple of Curves adjustments using a range mask to get the brightness to where I wanted it compared to the Ha image

8. Pixelmath to combine using R=Ha, G=.6*Ha + .4*OIII, B=OIII

9. LRGB Combination, applying Ha as luminance

10. Curves adjustment to adjust contrast and saturation with an inverted star mask

10. Curves adjustment with a star mask to remove some blue

11. Local Histogram Equalization with a luminance mask applied

12. Curves adjustment to adjust contrast to taste

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	3378573
PixInsight job	6UWEXXAV0DFDRAF307E519I7YGU6ZEK6
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h20m41s.947
RA (top/left)	23h22m39s.837
RA (top/right)	23h17m10s.980
RA (bottom/right)	23h18m46s.842
RA (bottom/left)	23h24m10s.976

Dec (center)	+61°11′04″.69
Dec (top/left)	+61°33′48″.14
Dec (top/right)	+61°19′36″.12
Dec (bottom/right)	+60°48′15″.36
Dec (bottom/left)	+61°02′12″.87

Image Index:

Contribution Index (beta):

NGC 7635 - Bubble Nebula

NGC 7635 - Bubble Nebula

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Image Index:

Contribution Index (beta):

NGC 7635 - Bubble Nebula

NGC 7635 - Bubble Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

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