67P/Churyumov-Gerasimenko 2022-Apr-27 Dan Bartlett

Windy unstable seeing with good transparency I though I'd image 67P for the final time (maybe), this time around. Although sitting at ~14.5 magnitude, the tail continues to surprise. The comet looks dusty to me, and the stars bloated due to seeing conditions.

I've included the comet integration mono version showing the extent of the tail in my 34 x 180seconds of stacking. An idea how PixInsight's comet alignment process will align the comet from each exposure, leaving the stars trailed. Choosing your desired settings in the Integration process can minimize the star trails (never really prefect) and produce a comet combined image with star trail remnants. I was surprised at the length and shape of the tail when I first saw the comet-only integration of 67P/ C-G while over 2 A.U. away from us.

Observer info:
Scope RASA 11 fl 623mm
Cam ASI2600 mcP
34 x 180 secs
June Lake California USA
DEBartlett

Image info:
WCS transformation ....... Linear
Projection ............... Gnomonic
Projection origin ........ [1006.034375 1192.480655] px -> [RA: 9 12 55.613 Dec: +20 03 32.32]
Resolution ............... 2.509 arcsec/px
Rotation ................. -3.171 deg
Reference system ......... ICRS
Observation start time ... 2022-04-28 05:08:28 UTC
Focal distance ........... 618.38 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 24' 8.1" x 1d 39' 44.0"
Image center ............. RA: 9 12 55.619 Dec: +20 03 32.27
Image bounds:
top-left .............. RA: 9 15 43.661 Dec: +20 55 33.99
top-right ............. RA: 9 09 44.014 Dec: +20 50 52.34
bottom-left ........... RA: 9 16 05.303 Dec: +19 15 59.43
bottom-right .......... RA: 9 10 09.427 Dec: +19 11 20.74