Rho Ophiuchi (Pedro A. Sampaio)

Celestial hemisphere: Southern · Constellation: Scorpius (Sco) · Contains: 19 omi Sco · 20 sig Sco · 21 alf Sco · 22 i Sco · 23 tau Sco · 5 rho Oph · Alniyat · Antares · B42 · IC 4603 · IC 4604 · IC 4605 · LBN 1100 · LBN 1101 · LBN 1102 · LBN 1103 · LBN 1104 · LBN 1105 · LBN 1106 · LBN 1107 · LBN 1108 · LBN 1109 · LBN 1110 · LBN 1111 · LBN 1112 · LDN 1672 · LDN 1675 · LDN 1676 · LDN 1680 · LDN 1681 · And 24 more.

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Rho Ophiuchi

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Rho Ophiuchi

Rho Ophiuchi cloud complex, shot at Aguas da Prata, São Paulo, Brazil. Bortle 3/4 skies, no moon, relatively good seeing.

Stacked with DSS, processed with PixInsight, basic workflow. Dynamic crop, Dynamic BG extraction, BG neutralization, Color calibration, noise reduction with Multiscale Linear Transform, Histogram transformation, curves for middle tones and saturation, little bit of star reduction at the end.

Original
B
Final
C

B

Description: Revised the post processing. Used starnet to remove stars and stretch using arcsinh to better bring out the nebulosity. Still, not entirely happy but better than before!

Uploaded: ...

C

Description: Last one (B) was still a bit washed out. Revised the post processing with better colors, I guess.

Uploaded: ...

Southern Hemisphere Astro

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	4872498
PixInsight job	UZV4FR8J127K4K9D8YUZ3ZRPE3NDD2L3
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	16h27m10s.26
RA (top/left)	16h18m20s.50
RA (top/right)	16h17m50s.38
RA (bottom/right)	16h36m27s.54
RA (bottom/left)	16h36m02s.53

Dec (center)	-25°24′06″.3
Dec (top/left)	-22°22′17″.3
Dec (top/right)	-28°23′44″.1
Dec (bottom/right)	-28°24′09″.0
Dec (bottom/left)	-22°22′41″.5

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Contribution Index (beta):

Rho Ophiuchi

Rho Ophiuchi

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B

C

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Image Index:

Contribution Index (beta):

Rho Ophiuchi

Rho Ophiuchi

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

In these public groups

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