Blue Horse Nebula and Rho Ophiuchi Complex (Marukawa)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph) · Contains: 10 Sco) · 14 Sco) · 19 Sco · 20 Sco) · 21 Sco) · 4 Oph · 7 Oph · 8 Sco A) · 9 Oph · 9 Sco) · Akrab (β1 Sco · Al Niyat (σ 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 Antares · The star Jabbah (ν Sco · The star Jabhat Acrabi I (ω1 Sco · The star Jabhat Acrabi II (ω2 Sco · And 6 more.

Blue Horse Nebula and Rho Ophiuchi Complex, Marukawa

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Blue Horse Nebula and Rho Ophiuchi Complex

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Blue Horse Nebula and Rho Ophiuchi Complex

Integrated images taken from 2017 to 2021.
<Eequipment data>
Lens: Zeiss Apo-Sonnar T* 2/135 ZF.2 (used at F/3.2)
Camera: Nikon D810A
<Exposure data>
April 4, 2017 Otaki town, Chiba Prefecture: 3 minutes x 47 shots
May 20, 2017 Hanawa town, Fukushima Prefecture: 3min×37 pictures
March 14, 2018 Hanawa town, Fukushima Prefecture: 3 minutes x 16 pictures
May 2, 2019 Hanawa town, Fukushima: 2.5 minutes x 15
March 21, 2020 Yamatsuri town, Fukushima: 2.5 min. x 38 sheets
April 19, 2021 Minami-Boso city, Chiba: 3min. x 39
Total: 139 3-minute x 139 images, 53 2.5-minute x 53 images (9 hours, 9.5 minuts)

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	7784800
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Blue Horse Nebula and Rho Ophiuchi Complex

Blue Horse Nebula and Rho Ophiuchi Complex

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Image Index:

Contribution Index (beta):

Blue Horse Nebula and Rho Ophiuchi Complex

Blue Horse Nebula and Rho Ophiuchi Complex

Equipment

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Description

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