NGC 7789 ( Roberto Marinoni )

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: NGC 7789

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NGC 7789

Link: https://www.robertomarinoni.com/

Powered byPixInsight

NGC 7789

Link: https://www.robertomarinoni.com/

Imaging Telescopes Or Lenses: Tecnosky APO 130 F7 Lanthanum Triplet
Imaging Cameras: Atik 4000
Mounts: EQ8
Filters: Baader Green 2" · Baader Blue 2" · Baader Red 2"
Accessories: Starlight Xpress SX USB Filter Wheel 5x2" · Riccardi-Reducer Riccardi 0.75x
Software: Adobe Photoshop · PHD guiding · Pixinsight 1.8 · Voyager
Guiding Telescopes Or Lenses: 70mm UltraGuide Artesky
Guiding Cameras: Starlight Xpress Lodestar

Dates:: Oct. 10, 2021 · Oct. 13, 2021 · Oct. 14, 2021
Frames:: Baader Blue 2": 19×300″(1h 35′) -20°C bin 1×1
Baader Green 2": 19×300″(1h 35′) -20°C bin 1×1
Baader Red 2" : 19×300″(1h 35′) -20°C bin 1×1
Integration:: 4h 45′
Darks:: 15
Flats:: 15
Flat darks:: 15
Avg. Moon age:: 7.03 days
Avg. Moon phase:: 46.77%
Mean SQM:: 18.50

Basic astrometry details

Astrometry.net job: 5236554

RA center: 23h57m22s.3

DEC center: +56°42′10″

Pixel scale: 2.203 arcsec/pixel

Orientation: 2.002 degrees

Field radius: 0.886 degrees

Resolution: 2047x2047

File size: 3.6 MB

Locations: Home observatory, Rescaldina, Milano, Italy

Data source: Backyard

NGC 7789 is an open cluster in Cassiopea constellation.
It is a very rich and concentrated cluster, formed by several hundred components and with an apparent diameter of 25’; its distance is estimated to be around 7620 light years.
Its age is quite advanced, estimated at 1.7 billion years or slightly less.

Open Star Clusters
Astrofili Dalai Lama
Imagers of Italy
Imaged with Voyager

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	5236554
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 7789

NGC 7789

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NGC 7789

NGC 7789

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