The Seven Sisters ( Michael von Berner-Purgstall )

Celestial hemisphere: Northern · Constellation: Taurus (Tau) · Contains: Barnard's Merope Nebula · IC 349 · Maia Nebula · Merope Nebula · NGC 1432 · NGC 1435 · The star 18Tau · The star Atlas (27Tau) · The star Celaeno (16Tau) · The star Electra (17Tau) · The star Merope (23Tau) · The star Pleione (28Tau) · The star Sterope I (21Tau) · The star Taygeta (19Tau) · The star ηTau

The Seven Sisters,

Michael von Berner-Purgstall

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The Seven Sisters

Powered byPixInsight

The Seven Sisters

Imaging Telescopes Or Lenses: Sky-Watcher Esprit 150ED
Imaging Cameras: Nikon D610 (modified)
Accessories: Lacerta MGEN-3 standalone autoguider · Lacerta MGEN 3 autoguider · Sky-Watcher 0.77X reducer for ESPRIT 150ED
Software: Pleiades Astrophoto PixInsight
Guiding Telescopes Or Lenses: Sky-Watcher Evoguide 50ED

Dates:: Dec. 6, 2021
Frames:: 48×300″(4h)
Integration:: 4h
Darks:: 36
Flats:: 30
Bias:: 70
Avg. Moon age:: 2.53 days
Avg. Moon phase:: 7.08%
Bortle Dark-Sky Scale:: 5.00
Mean SQM:: 20.60
Mean FWHM:: 2.40
Temperature:: -2.00

Basic astrometry details

Astrometry.net job: 5298012

RA center: 03h46m39s.6

DEC center: +24°03′18″

Pixel scale: 3.371 arcsec/pixel

Orientation: 0.663 degrees

Field radius: 1.407 degrees

Resolution: 1667x2500

File size: 4.0 MB

Locations: My lovely garden, J-City, Burgenland, Austria

Data source: Backyard

"First Light" for the recently acquired 0.77x reducer from Sky-Watcher for the ESPRIT 150ED.
:-)

Original
E

E

Description: Even in this widefield you can make out Barnard’s Merope Nebula just below the star Merope.
:-)

Uploaded: ...

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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
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Star trails
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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.
Dismissals 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	5298012
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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