12P/Pons Brooks 2023-Oct-08 Dan Bartlett

Astrobin: https://astrob.in/zl7ysx/B/

Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 38 x240 sec
Seeing: 3/5
Transparency: 7/10
Observer: DEBartlett
Location: June Lake, California, USA

Close up Image:
Projection ............... Gnomonic
Projection origin ........ [1773.048928 1170.612249] px -> [RA: 17 23 47.747 Dec: +45 26 56.03]
Resolution ............... 1.064 arcsec/px
Rotation ................. -2.323 deg
Reference system ......... ICRS
Observation start time ... 2023-10-09 03:06:59 UTC
Observation end time ..... 2023-10-09 03:10:59 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 728.82 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 2' 53.4" x 41' 30.0"
Image center ............. RA: 17 23 47.720 Dec: +45 26 56.13 ex: -0.023445 px ey: -0.129963 px
Image bounds:
top-left .............. RA: 17 26 43.191 Dec: +45 48 47.42 ex: +0.588123 px ey: -0.320880 px
top-right ............. RA: 17 20 42.741 Dec: +45 46 14.71 ex: +0.357284 px ey: -0.107300 px
bottom-left ........... RA: 17 26 50.512 Dec: +45 07 20.11 ex: +0.088845 px ey: +0.092392 px
bottom-right .......... RA: 17 20 54.453 Dec: +45 04 47.58 ex: -0.256337 px ey: +0.033047 px

Cropped:
Field of view ............ 30' 45.9" x 20' 2.9"
Image center ............. RA: 17 23 48.170 Dec: +45 26 46.80 ex: +0.072871 px ey: +0.030967 px
Image bounds:
top-left .............. RA: 17 25 13.681 Dec: +45 37 23.39 ex: -0.094055 px ey: +0.038663 px
top-right ............. RA: 17 22 17.935 Dec: +45 36 08.34 ex: -0.084684 px ey: +0.127840 px
bottom-left ........... RA: 17 25 17.857 Dec: +45 17 21.19 ex: +0.038549 px ey: +0.035924 px
bottom-right .......... RA: 17 22 23.064 Dec: +45 16 06.20 ex: -0.218955 px ey: -0.155608 px



WideFieldImage:
Projection ............... Gnomonic
Projection origin ........ [1496.042385 996.478594] px -> [RA: 17 23 21.399 Dec: +45 26 20.11]
Resolution ............... 2.127 arcsec/px
Rotation ................. -2.395 deg
Reference system ......... ICRS
Observation start time ... 2023-10-09 03:06:59 UTC
Observation end time ..... 2023-10-09 03:10:59 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 729.45 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 46' 3.1" x 1d 10' 36.4"
Image center ............. RA: 17 23 21.303 Dec: +45 26 20.11 ex: +0.000511 px ey: -0.104501 px
Image bounds:
top-left .............. RA: 17 28 17.951 Dec: +46 03 22.59 ex: +0.120514 px ey: -0.065856 px
top-right ............. RA: 17 18 08.112 Dec: +45 58 55.23 ex: +0.062797 px ey: +0.024004 px
bottom-left ........... RA: 17 28 28.408 Dec: +44 52 53.85 ex: -0.183754 px ey: +0.057573 px
bottom-right .......... RA: 17 18 31.194 Dec: +44 48 30.45 ex: +0.178444 px ey: +0.370527 px