LDN 889 - The Heart of the Butterfly (Sven Arnold)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B347 · HD194558 · HD194576 · HD194630 · HD194649 · HD194670 · HD194685 · HD194720 · HD194789 · HD194908 · HD195150 · HD195255 · HD229257 · HD229258 · HD229275 · HD229282 · HD229290 · HD229292 · HD229296 · HD229298 · LBN 245 · LDN 889 · PK078+00.1 · PK079+00.1

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LDN 889 - The Heart of the Butterfly

Link: https://svenarnold.com/2022/09/25/ldn-889-the-heart-of-the-butterfly/

Powered byPixInsight

LDN 889 - The Heart of the Butterfly

Link: https://svenarnold.com/2022/09/25/ldn-889-the-heart-of-the-butterfly/

LDN 889 is a dark nebula in the heart of the famous Butterfly Nebula or Gamma Cygni Nebula in the constellation Cygnus. In fact, the two wings of the Butterfly IC1318 B and C are not two emission nebulae, but one divided by the massive dark nebula LDN 889.
This object can be photographed from the northern hemisphere in summer and autumn. These nebulae are about 4,900 light years away from our solar system.

Fast Newtonians
ZWO ASI294MM Pro Images
Astrophotography from home

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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
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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
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Amateur hosting facility
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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	Advanced success
Started	...
Astrometry.net job	6339036
PixInsight job	ZD5V8G94Y1GH8CQVPBY4CB6D7AEOHMQN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h26m54s.338
RA (top/left)	20h26m15s.802
RA (top/right)	20h30m13s.127
RA (bottom/right)	20h27m33s.619
RA (bottom/left)	20h23m36s.223

Dec (center)	+40°05′48″.43
Dec (top/left)	+39°27′50″.67
Dec (top/right)	+40°13′16″.48
Dec (bottom/right)	+40°43′48″.19
Dec (bottom/left)	+39°58′00″.98

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LDN 889 - The Heart of the Butterfly

LDN 889 - The Heart of the Butterfly

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Image Index:

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LDN 889 - The Heart of the Butterfly

LDN 889 - The Heart of the Butterfly

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