The Rosette in Narrowband (Don Walters)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: NGC 2237 · NGC 2238 · NGC 2239 · NGC 2246 · NGC 2252 · Rosette A · Rosette B · Rosette Nebula · The star 12 Mon

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The Rosette in Narrowband

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The Rosette in Narrowband

First light with my new ASI1600MM-Cool. Nice being able to get bigger targets! Since this was just a warm-up image, I just went with Unity gain at 5-min subs.

PI Processing is as follows:

Calibrated my Flats with Flat-Darks (no bias).

Calibrated my lights against a master dark and master flats (no bias).

(Integrated everything with Winsoried clipping)

Drizzle up by 2x

Cropped slightly

Resample down by 1/2.

DBE to each master (Ha/OIII/SII)

MLT (noise reduction) to each master

Linear fit using OIII (applied to Ha and SII)

Combined using Pixelmath (OHS)

Histogram transformation

Unsharp mask (with star mask in place)

HDRMT

Curves Transform to de-saturate the stars a little

Original
C
Final
D

C

Description: Reprocessed to RGB color scheme.

HT, ACDNR, HT again, UnsharpMask, HDRMT, ExpTrans.

Uploaded: ...

D

Description: Re-processed with BXT and NXT.

Uploaded: ...

Beginners AP

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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
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	8399049
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Rosette in Narrowband

The Rosette in Narrowband

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Image Index:

Contribution Index (beta):

The Rosette in Narrowband

The Rosette in Narrowband

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Description

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Sky plot

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