SH2-224 The Rice Hat Nebula (AstroDarks)

Celestial hemisphere: Northern · Constellation: Auriga (Aur)

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SH2-224 The Rice Hat Nebula

Link: https://tinyurl.com/AstroDarksIG

Powered byPixInsight

SH2-224 The Rice Hat Nebula

Link: https://tinyurl.com/AstroDarksIG

After patiently waiting for 6 weeks for the weather to clear out, I thought I would challenge myself and find a rarely imaged object. I chose the LBN 769 (SH2-224) , the rice hat nebula.

This is a supernova remnant located in the Constellation of Auriga. The shape of this nebula resembles "DouLi" - a conical hat typically made with bamboo which is often seen in Asian countries. I managed to spend 26 hrs on this target. The Sii was pretty weak so early on I decided to go with the HOO palette.

This object, benign faint, is incredibly difficult to frame. I could not see this in stellarium (Even with DSS turned on). Neither could I frame it in telescopius. On a 5 min exposure, through my Ha filter, the hat was barely visible. It took me an entire nights worth of data to realize that the object was not completely centered. I decided to continue and crop later.

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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
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	8795823
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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SH2-224 The Rice Hat Nebula

SH2-224 The Rice Hat Nebula

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SH2-224 The Rice Hat Nebula

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