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.

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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
Artificial satellite

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.	...
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
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Status	Advanced success
Started	...
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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