Rosette Nebula (Alex)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: NGC 2239 · NGC 2244 · NGC 2252 · Rosette nebula · The star 12Mon

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Rosette Nebula

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Rosette Nebula

My first really successful imaging session, nothing went wrong, clouds didn't roll in the moment that I got everything working.

I've had a number of goes at processing this image, none of which I was fully happy with. In the end I split the image into a full resolution mono image and a binned colour image and processed them separately so that I could work separately on maximizing detail in the mono image and reducing noise in the colour one. I then recombined them at the end of the process.

Equipment:

iOptron CEM25P mount

Skywatcher ED80 DS Pro

Sony a6300 camera

ZWO ASI 120MM-S Guide Camera

Raspberry Pi 3 running Astroberry for capture and guiding

Acquisition:

Night of the 9th of January 2019

31x 300secs dithered lights @ ISO 400 (155 total mins)

42 darks

30 flats

300 bias

Pre-Processing:

dcraw conversion script to ensure no white balancing

Stacked in DSS

Main Image Processing in Star Tools:

Luminance image processed to bring out detail:

Crop

Develop

Filter

Life - Isolate

Denoise

Magic - Tighten stars

RGB image processed to reduce noise:

Bin 50%

Crop

Develop

Filter

Denoise

L and RGB images combined in Layer module - I had to resize the RGB image back to the original dimensions as I prefered the result from the Layer module over the LRGB module, but the images must be the same size.

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	Basic success
Started	...
Astrometry.net job	2473547
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Rosette Nebula

Rosette Nebula

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Image Index:

Contribution Index (beta):

Rosette Nebula

Rosette Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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