Horsehead Mosaic (George Chappel)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 Ori · 48 sig Ori · 50 Ori) · 50 zet Ori · Alnitak · B33 · Flame Nebula · HD37594 · HD37744 · HD37776 · HD37904 · HD38099 · Horsehead nebula · IC 431 · IC 432 · IC 434 · IC 435 · LBN 944 · LBN 946 · LBN 950 · LBN 953 · LBN 954 · LBN 958 · LBN 962 · LBN 965 · LDN 1635 · LDN 1636 · NGC 2023 · NGC 2024 · Orion B · And 3 more.

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Horsehead Mosaic

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Horsehead Mosaic

In early 2021, I finally got serious again about astrophotography and instead of just assisting my son, we swapped roles and I took lead. I decided to go large for my first image in over three years and push the old CGEM-DX to its limits by doing a six-panel mosaic of the Horsehead Nebula. Despite the mount having a mind of its own when it came to guiding, over the course of about a month I was able to put together enough hydrogen alpha data to complete the mosaic. Again, the calibration files, which I'm sure we generated at the time, were nowhere to be found. Fortunately the SX-694M is a wonderful camera and able to produce beautiful images even without the calibration files.

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	Advanced success
Started	...
Astrometry.net job	6889313
PixInsight job	MEX17BUX01Z2PVJ4EF2AX7W5B8A48PWB
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h40m00s.83
RA (top/left)	05h35m57s.65
RA (top/right)	05h36m02s.60
RA (bottom/right)	05h44m04s.48
RA (bottom/left)	05h43m58s.60

Dec (center)	-02°29′34″.7
Dec (top/left)	-01°20′14″.9
Dec (top/right)	-03°40′02″.6
Dec (bottom/right)	-03°38′51″.6
Dec (bottom/left)	-01°19′04″.5

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Horsehead Mosaic

Horsehead Mosaic

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Image Index:

Contribution Index (beta):

Horsehead Mosaic

Horsehead Mosaic

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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