Messier 46 in Puppis (astropical)

Celestial hemisphere: Southern · Constellation: Puppis (Pup) · Contains: 140 Pup · HD61819 · HD62000 · HD62146 · HD62289 · M 46 · NGC 2437 · NGC 2438 · PGC 77905 · The star 140 Pup

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Messier 46 in Puppis

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Messier 46 in Puppis

Ambient temperature comfortable 20°C, but 96% humidity, slight haze up there. Clouds looming to cross through my simultaneously photographed fields, wide or narrow. As this had to be expected I have purposely chosen a star cluster rather than my longed-for Thor's Helmet for the APO and the Seagull for the Sammy 135mm. Messier 46 is enriched by a tiny planetary, NGC 2438, at a distance of 1370 ly which is much closer than the cluster at some 5000 ly.

What you are seeing in the background isn't noise, it is dark matter.

Anyways, after less than an hour integration, the session was ended by rain (a blessing for my vegetables), but after all calibration frames taken. Good to have a little vinyl shed with casters to quickly cover the scope and PC. The shed's name is "Rolling Thunder".

À propos calibration, in 30 years or so, your child or grandchild will admire your patience and devotion and talk like, "just imagine, at that time my dad took darks, flats and even biases, incredible, how primitive! He even bothered calibrating his scope." For the time being, I bother you with my stone age images.

Final
Original
B
C

B

Title: Wide field centered on M46 in Puppis

Description: Samyang 135mm at f2, Nikon D5500, LPR, 42 x 60 sec at ISO1600 (to high), calibrated.

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Title: Annotated Version

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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	9156621
PixInsight job	JZBTZ6S94XBHTJD0WXXGPNCUAJ9SGQUC
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	07h41m37s.79
RA (top/left)	07h43m15s.93
RA (top/right)	07h38m19s.27
RA (bottom/right)	07h39m59s.10
RA (bottom/left)	07h44m56s.20

Dec (center)	-14°47′01″.2
Dec (top/left)	-14°05′21″.2
Dec (top/right)	-14°48′11″.9
Dec (bottom/right)	-15°28′39″.2
Dec (bottom/left)	-14°45′40″.1

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Messier 46 in Puppis

Messier 46 in Puppis

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Messier 46 in Puppis

Messier 46 in Puppis

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