Rho Ophiuchi & Blue Horsehead Mosaic (Curtis2010)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: 10 Sco) · 14 Sco) · 20 Sco) · 21 Sco) · 23 Sco) · 4 Oph · 7 Oph · 8 Sco A) · 9 Oph · 9 Sco) · Akrab (β1 Sco · Al Niyat (σ Sco · Al Niyat (τ Sco · Alniyat I · Cor Scorpii · Graffias · IC 4592 · IC 4601 · IC 4603 · IC 4604 · IC 4605 · Kalb al Akrab (α Sco · M 4 · NGC 6121 · Part of the constellation Scorpius (Sco) · The star Acrab · The star Alniyat · The star Alniyat II · The star Antares · The star Jabbah (ν Sco · And 7 more.

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Rho Ophiuchi & Blue Horsehead Mosaic

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Rho Ophiuchi & Blue Horsehead Mosaic

Rho Ophiuchi & Blue Horsehead mosaic.

A 3 x 3 mosaic including Rho Ophiuchi and Blue Horsehead nebulas. I also integrated data from previous images of each of these two individual objects into the mosaic data. I created a starless version of the image using StarXterminator. I used this copy to process the nebulosity without distorting star colors. I created a second copy and reduced the number of stars using a lumonisity mask which only made the brighter stars visible. I combined these images to create the final version with reduced stars so that the nebulosity detail is more visible.

Scope: Redcat 51
Camera: ASI071MC-Cool
Guide: ASIAIR Plus
Mount: AM5
Post: APP, Photoshop (StarXterminator, NoiseXterminator, AstoFlatsPro, StarSpikesPro)

A total of approximately 30 hours of integration time (including mosaic and earlier data).

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	9520348
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):

Rho Ophiuchi & Blue Horsehead Mosaic

Rho Ophiuchi & Blue Horsehead Mosaic

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Image Index:

Contribution Index (beta):

Rho Ophiuchi & Blue Horsehead Mosaic

Rho Ophiuchi & Blue Horsehead Mosaic

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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