Bubble Nebula (bicolor) ( John Renaud )

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble nebula · NGC 7635

Image of the day 10/18/2018

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Bubble Nebula (bicolor)

Image of the day 10/18/2018

Powered byPixInsight

Bubble Nebula (bicolor)

Imaging Telescopes Or Lenses: Sky-Watcher Esprit 150ED
Imaging Cameras: Atik One
Mounts: Astro-Physics 1100GTO
Filters: Astrodon 3nm OIII · Astrodon 5nm Ha
Accessories: Atik OAG
Software: Adobe Photoshop · PixInsight · Sequence Generator Pro · PHD2
Guiding Cameras: SX Ultrastar

Dates:: Aug. 16, 2018 · Sept. 18, 2018 · Sept. 19, 2018 · Oct. 1, 2018 · Oct. 2, 2018 · Oct. 3, 2018
Frames:: Astrodon 3nm OIII: 51×900″(12h 45′) -5°C bin 1×1
Astrodon 5nm Ha: 39×900″(9h 45′) -5°C bin 1×1
Integration:: 22h 30′
Avg. Moon age:: 15.12 days
Avg. Moon phase:: 52.67%

Basic astrometry details

Astrometry.net job: 2303485

RA center: 23h20m40s.6

DEC center: +61°10′55″

Pixel scale: 0.435 arcsec/pixel

Orientation: 177.903 degrees

Field radius: 0.236 degrees

Resolution: 3000x2500

File size: 3.5 MB

Data source: Backyard

I thought I was going to run out of time on this one and nearly abandoned it for the year but three [mostly] clear nights in early October brought it back to life. Very challenging to process overall but, in particular, star control was a big challenge... I went back to the drawing board a couple of times to better address the stars but finally decided to move on.

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

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	2303485
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

Image of the day 10/18/2018

Bubble Nebula (bicolor)

Image of the day 10/18/2018

Bubble Nebula (bicolor)

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Image Index:

Contribution Index (beta):

Image of the day 10/18/2018

Bubble Nebula (bicolor)

Image of the day 10/18/2018

Bubble Nebula (bicolor)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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