M 101, Pinwheel Galaxy ( Juan B. Torre Valle )

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 101 · NGC 5457 · NGC 5461 · NGC 5474 · NGC 5477

M 101, Pinwheel Galaxy,

Juan B. Torre Valle

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M 101, Pinwheel Galaxy

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M 101, Pinwheel Galaxy

Imaging Telescopes Or Lenses: Takahashi FSQ 106 EDX4
Imaging Cameras: Atik 460EX Mono
Mounts: Sky-Watcher AZ-EQ6 GT
Filters: Baader Planetarium Baader 1,25" R · Baader Planetarium Baader 1,25 UV-IR cut · Baader Planetarium Baader 1.25" G · Baader Planetarium Baader 1.25" B
Accessories: QHYCCD PoleMaster PoleMaster · Lunatico Astronomia EZ60+QHY5 II · Lunatico Astronomia Seletek Armadillo 2
Software: Open PHD Guiding Project PHD2 · Pleiades Astrophoto PixInsight · EQMOD · SGP Pro

Dates:: May 5, 2019
Frames:: Baader Planetarium Baader 1,25 UV-IR cut: 40×300″(3h 20′) bin 1×1
Baader Planetarium Baader 1,25" R: 40×60″(40′) bin 2×2
Baader Planetarium Baader 1.25" B: 40×60″(40′) bin 2×2
Baader Planetarium Baader 1.25" G: 40×60″(40′) bin 2×2
Integration:: 5h 20′
Avg. Moon age:: 0.54 days
Avg. Moon phase:: 0.32%
Mean SQM:: 19.70

Basic astrometry details

Astrometry.net job: 4110358

RA center: 14h03m50s.4

DEC center: +54°07′19″

Pixel scale: 1.759 arcsec/pixel

Orientation: 76.684 degrees

Field radius: 0.737 degrees

Resolution: 2384x1844

File size: 2.0 MB

Locations: Mi casa, Matalascañas, Huelva, Spain

Data source: Backyard

The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years (six megaparsecs) away from Earth in the constellation Ursa Major. Discovered by Pierre Méchain on March 27, 1781, it was communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries.

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

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	4110358
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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M 101, Pinwheel Galaxy

M 101, Pinwheel Galaxy

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M 101, Pinwheel Galaxy

M 101, Pinwheel Galaxy

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