Closeup, Comet C/2023 H2 Lemmon from November 11th 2023 (Dan Bartlett)

Celestial hemisphere: Northern · Constellation: Aquila (Aql) · Contains: Solar system body or event

Image of the day 12/03/2023

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Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

Image of the day 12/03/2023

Powered byPixInsight

Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

40 x 30seconds went into this closeup of comet C/2023 H2 Lemmon.
Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm;
exposure: 40 x30 sec
Seeing: 4/5 both
Transparency: 9/10
Observer: DEBartlett

Image details:
Projection ............... Gnomonic
Projection origin ........ [3061.632198 1998.176700] px -> [RA: 19 17 13.013 Dec: +9 08 03.88]
Resolution ............... 1.064 arcsec/px
Rotation ................. -6.831 deg
Reference system ......... ICRS
Observation start time ... 2023-11-12 04:40:21 UTC
Observation end time ..... 2023-11-12 04:40:51 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 728.59 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 48' 37.7" x 1d 10' 53.6"
Image center ............. RA: 19 17 13.015 Dec: +9 08 03.91 ex: -0.071002 px ey: -0.087065 px
Image bounds:
top-left .............. RA: 19 20 34.522 Dec: +9 49 36.61 ex: -1.596205 px ey: -2.237607 px
top-right ............. RA: 19 13 17.618 Dec: +9 36 34.42 ex: +1.388799 px ey: -1.821081 px
bottom-left ........... RA: 19 21 07.812 Dec: +8 39 22.66 ex: -1.816333 px ey: +0.231427 px
bottom-right .......... RA: 19 13 52.146 Dec: +8 26 22.28 ex: +0.341537 px ey: +0.251065 px

Original
Final
B

Comets Imaging

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
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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	8780374
PixInsight job	UKR5YGPXCPIIMX4TK0470RARJQ825VGJ
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	19h17m13s.13
RA (top/left)	19h20m34s.71
RA (top/right)	19h13m17s.43
RA (bottom/right)	19h13m52s.16
RA (bottom/left)	19h21m07s.92

Dec (center)	+09°08′03″.7
Dec (top/left)	+09°49′39″.2
Dec (top/right)	+09°36′36″.0
Dec (bottom/right)	+08°26′19″.3
Dec (bottom/left)	+08°39′22″.10

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Image of the day 12/03/2023

Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

Image of the day 12/03/2023

Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

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Image of the day 12/03/2023

Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

Image of the day 12/03/2023

Closeup, Comet C/2023 H2 Lemmon from November 11th 2023

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