NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy' (gigiastro)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 6939 · NGC 6946

NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy', gigiastro

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NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

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NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

All stars visible as bright dots in this image (including those of the open cluster NGC 6939)

belong to our galaxy,...all stars except the one indicated by the arrow: it is located in NGC 6946,

a galaxy at a distance of 22 million light years, and is visible only because, like 'Supernova',

exploded with a devastating fury of inconceivable power...,

finding himself potentially in the state of becoming, for a short time,

brighter than all the other stars of that galaxy put together!

S&T: "the 10th supernova found in this explosion-rich galaxy in the past century" (1917-2017),

"reaffirming its reputation for fireworks of the grandest kind".

Severe light pollution:

darkness of observing site: Bortle's class 8

seeing 3 (Antoniadi)

cropping-->resampling (1951x1299) from original picture of 5202x3465 resolution

282x30s ISO 1600

10 dark

30 flat

10 dark flat

no bias

(unguided)

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	Distinct awarded users	Total awarded images
Image of the day
Top picks
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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
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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
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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	1606218
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

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Image Index:

Contribution Index (beta):

NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

NGC 6946 spiral galaxy, NGC 6939 open cluster and Supernova 2017eaw in 'Fireworks Galaxy'

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Acquisition details

Description

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