A rose in the eye of the unicorn (David Lindemann)

Celestial hemisphere: Northern · Constellation: Monoceros (Mon) · Contains: Christmas Tree cluster · Cone nebula · IC 2169 · IC 448 · NGC 2239 · NGC 2244 · NGC 2251 · NGC 2252 · NGC 2264 · Rosette nebula · The star 12Mon · The star 13Mon · The star 15Mon · The star 16Mon · The star 17Mon · The star ξGem

Image of the day 04/09/2017

A rose in the eye of the unicorn, David Lindemann

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A rose in the eye of the unicorn

Image of the day 04/09/2017

Powered byPixInsight

A rose in the eye of the unicorn

30 panels mosaic of H-a, SII and OIII + 104 panels Red and Blue from POSS2 (Digitized Sky Survey http://www.astro.caltech.edu/~wws/poss2.html)

LRGB composition Hybrid Cannistra bi-color (http://www.starrywonders.com/bicolortechniquenew.html) narrowband and broadband palette

363 raw narrowband images of 10 minutes each

208 raw broadband images from POSS2

60.5h total exposure during 10 nights

A full resolution of 11278x19004 pixels for a total of 214 Megapixels

50 bias + 50 dark + 50 flats for calibration in CCDStack

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Takahashi FSQ106ED @f/5 530mm focal length with ONAG XT (http://www.innovationsforesight.com/),

Apogee Alta U8300 monochrome @-30°C and Astrodon narrowband H-alpha, OIII and SII 5nm filters on 10micron GM2000 HPS II

Software: MaximDL to capture - SkySurveyor to calculate mosaic tiles and to automatically move the scope to the next tile coordinate - SharpLock to keep the optical train perfectly focused - CCDStack to calibrate, register, normalize, data reject and combine - Registar and PixInsight for mosaic assembly - Photoshop CE and PixInsight for non-linear streching.

Narrowband imaging
Deep Sky Mosaics

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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	Advanced failed
Started	...
Astrometry.net job	1522550
PixInsight job	6PZMRRVX1N5VLZKOUSWGHDR7O6PPECA4
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

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Image of the day 04/09/2017

A rose in the eye of the unicorn

Image of the day 04/09/2017

A rose in the eye of the unicorn

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Image Index:

Contribution Index (beta):

Image of the day 04/09/2017

A rose in the eye of the unicorn

Image of the day 04/09/2017

A rose in the eye of the unicorn

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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