IC 356 (Tom Harrison)

Celestial hemisphere: Northern · Constellation: Camelopardalis (Cam) · Contains: IC 356

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IC 356

Link: http://www.manoprietoobservatory.com/gallery/galaxies/183

IC356, also with the Arp peculiar galaxy designation Arp213, is located about 40 Million Light-Years distant toward the Constellation Camelopardalis, behind a curtain of gas and dust in the Milky Way. IC356, like its more well known neighbor IC342, has its light (particularly blue) extincted by the Milky Way gas and dust, but even more so for IC356 which is much more distant. The most notable feature of IC356 other than its lack of color is the prominent radial spoke or dust lane which crosses the entire disk and then bifurcates at the core, seemingly forming a torus of gas and dust wraping around it. From the orientation of the torus, it is conjectured that it may be a polar ring object. These peculiarities along with a previously reported bi-polar outflow, a high rotational velocity and flat rotation curve in the outer reaches indicating a large dark matter halo combine to make IC356 a very odd system indeed.

Object: IC356 (Arp 213)

Distance: ~40 Million Light-Years

Date: January 2012

Place: Fort Davis, TX

Exposure Details: LRGB:510:140:180:240 unbinned

Processing: CCDInspector, CCDStack, MaxIm DL Pro, Photoshop CS3, etc.

Optics: RCOS 12.5" Truss

Focal Length: 2808mm @ f9

Mount: Paramount ME

Camera: STL6303E SBIG

Focuser: RCOS

Guiding: Off-axis with SBIG RGH

Filters: Tru-Balance 2" LRGB Gen II

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
Landscape

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.
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	6439224
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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