Interesting Tail Structure on Comet 12P/ Pons-Brooks from February 12th (Dan Bartlett)

Interesting Tail Structure on Comet 12P/ Pons-Brooks from February 12th

Two imaging sessions from my latitude, both morning and evening chances, during the past several weeks. This image is from the evening of my February 11th. The comet is displaying some interesting detail in the tail however only the brighter regions are seen in the individual subs. It isn't till a stack is made that the fine smoke like cometary plasma wisps are visible. The color readily processes with little effort.

SPECIAL NOTE: Notice what appears to be stellar artifacts around the brighter orange star to the mid left of the image. The star's designation is listed as HD 211073 and aside from the star spikes (caused from the wires emanating from the RASA/Camera setup) the cloudy feature is actually a reflection nebula - VdB 151 !!!

Observational details:
Backyard setup
scope: RASA11 = 279mm; fl =621mm;
exposure: 23 x 120 sec
Seeing: 4.5/5
Transparency:8/10
Observer: DEBartlett
Place: June Lake_California USA

Image Info:
Projection ............... Gnomonic
Projection origin ........ [1084.002360 2289.058116] px -> [RA: 22 10 33.247 Dec: +39 18 10.48]
Resolution ............... 2.511 arcsec/px
Rotation ................. -3.538 deg
Reference system ......... ICRS
Observation start time ... 2024-02-12 02:53:36 UTC
Observation end time ..... 2024-02-12 02:55:36 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m
Focal distance ........... 617.63 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 30' 44.7" x 3d 11' 37.1"
Image center ............. RA: 22 10 33.254 Dec: +39 18 10.32 ex: +0.180404 px ey: +0.025736 px
Image bounds:
top-left .............. RA: 22 14 01.681 Dec: +40 56 22.85 ex: -1.002702 px ey: +0.114295 px
top-right ............. RA: 22 06 02.692 Dec: +40 50 36.40 ex: +1.188877 px ey: +0.970175 px
bottom-left ........... RA: 22 14 51.917 Dec: +37 45 04.76 ex: -0.789931 px ey: -2.098204 px
bottom-right .......... RA: 22 07 14.263 Dec: +37 39 31.00 ex: +0.544485 px ey: -1.892512 px

Original
Final
B

Comets Imaging

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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

	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

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	9212231
PixInsight job	BK4W06JL2I5RCG9UPS78FNVNY467QEZP
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	22h10m33s.25
RA (top/left)	22h14m01s.95
RA (top/right)	22h06m02s.41
RA (bottom/right)	22h07m13s.94
RA (bottom/left)	22h14m52s.21

Dec (center)	+39°18′10″.3
Dec (top/left)	+40°56′26″.3
Dec (top/right)	+40°50′39″.3
Dec (bottom/right)	+37°39′30″.10
Dec (bottom/left)	+37°45′10″.0

Image Index:

Contribution Index (beta):