12P/Pons-Brooks 2024-Apr-01 Dan Bartlett

_12P_Pons_Brooks_RASA11_ASI2600mcP_28x30sec_2024_04_01_203646PDT_JuneLake_California_USA_DEBartlett

A little delayed with US total eclipse travel and visits. This absolutely the final night of imaging 12P/ Pons-Brooks from my Northern Hemisphere location. Aside from the C6 HyperStar mounted piggybacked on top of the RASA11 (image as yet to be processed), this is the final efforts to image the comet during twilight. Surprising how much the comet's morphology has changed over the past two days. An exciting comet over the past year.

I've included the lum image for nostalgic reasons.

Full Resolution Image: https://astrob.in/ln7bzl/B/

Observational details:
Backyard setup
scope: RASA11 fl620mm D279mm
exposure: 28 x 30 sec
Seeing: 4/5
Transparency 8/10
Observer: DEBartlett
Place: June Lake_California USA


Image Info (Processed images):
Projection ............... Gnomonic
Projection origin ........ [1276.434373 2176.067379] px -> [RA: 2 17 40.625 Dec: +23 20 47.06]
Resolution ............... 2.513 arcsec/px
Rotation ................. 22.801 deg
Reference system ......... ICRS
Observation start time ... 2024-04-02 03:36:46 UTC
Observation end time ..... 2024-04-02 03:37:16 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m
Focal distance ........... 617.31 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 46' 52.4" x 3d 2' 10.2"
Image center ............. RA: 2 17 40.625 Dec: +23 20 47.06 ex: +0.067656 px ey: +0.002426 px
Image bounds:
top-left .............. RA: 2 23 52.838 Dec: +24 23 36.78 ex: -1.227438 px ey: -1.156485 px
top-right ............. RA: 2 16 40.256 Dec: +25 05 24.51 ex: +1.219245 px ey: -1.141528 px
bottom-left ........... RA: 2 18 39.119 Dec: +21 36 08.58 ex: -1.429232 px ey: +1.453392 px
bottom-right .......... RA: 2 11 33.651 Dec: +22 16 56.90 ex: +2.117257 px ey: +0.860093 px