Switching over from the star of the show (12P/Pons-Brooks see
https://astrob.in/el4qff/B/) over to a brightening 13P/ Olbers was the final comet of the evening. Clouds and treetops moved in the FOV during the shoot limiting my exposures to 14 x 120 seconds. Interesting nuclear development hinting, in the image, of a bow wave developing. Looking forward over the next few months as 13P climbs northward.
Observational details:
Backyard setup
scope: C14 HyperStar fl728mm D356mm
exposure: 14 x 120 sec
Seeing: 3/5
Transparency 7/10
Observer: DEBartlett
Place: June Lake_California USA
Image Info (Processed images):
Projection ............... Gnomonic
Projection origin ........ [1011.957369 1397.927574] px -> [RA: 3 39 46.359 Dec: +15 05 14.28]
Resolution ............... 2.128 arcsec/px
Rotation ................. 20.093 deg
Reference system ......... ICRS
Observation start time ... 2024-03-31 04:14:33 UTC
Observation end time ..... 2024-03-31 04:16:33 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m
Focal distance ........... 728.80 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 11' 47.7" x 1d 39' 10.7"
Image center ............. RA: 3 39 46.360 Dec: +15 05 14.28 ex: +0.003725 px ey: -0.005717 px
Image bounds:
top-left .............. RA: 3 43 16.803 Dec: +15 39 19.08 ex: -1.111432 px ey: -1.142694 px
top-right ............. RA: 3 38 37.277 Dec: +16 03 58.46 ex: +0.963087 px ey: -1.123362 px
bottom-left ........... RA: 3 40 54.681 Dec: +14 06 26.86 ex: -1.519970 px ey: +1.299623 px
bottom-right .......... RA: 3 36 17.005 Dec: +14 30 55.16 ex: +2.165536 px ey: +0.505989 px
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