2023p1 20230823 dbartlett

Comet C/2023 P1 Showing Considerable Activity 2023-08-23.  Stacked 44 x 20 seconds  this morning under near ideal conditions. Somehow , with the comet dropping in altitude, I've increased the exposure time to 12 minutes. The low altitude and morning twilight are both  playing havoc on the star shapes and color.  Images are showing an active tail with forks and twisted ribbons.  The advancement in activity has been pronounced over only a few days.  Stay tuned as it looks like I have friendly weather for the next four mornings. 
 
 Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 44 x20 sec
Seeing: 4/5
Transparency: 9.5/10
Observer: DEBartlett
Location: June Lake, California, USA
 
 
Image Details (Starless Version are at full resoution 1.06"/pix):
WCS transformation ....... Thin plate spline
Control points ........... 291
Spline lengths ........... l:291 b:291 X:291 Y:291
Projection ............... Gnomonic
Projection origin ........ [1334.709457 894.208041] px -> [RA:  7 44 25.557  Dec: +21 46 22.34]
Resolution ............... 2.130 arcsec/px
Rotation ................. -2.665 deg
Reference system ......... ICRS
Observation start time ... 2023-08-23 12:03:25 UTC
Observation end time ..... 2023-08-23 12:03:45 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 30 N  2357 m
Focal distance ........... 728.20 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 34' 46.5" x 1d 3' 28.0"
Image center ............. RA:  7 44 25.557  Dec: +21 46 22.34  ex: +0.012755 px  ey: -0.010316 px
Image bounds:
   top-left .............. RA:  7 47 43.533  Dec: +22 20 04.40  ex: -0.002175 px  ey: -0.002708 px
   top-right ............. RA:  7 40 54.713  Dec: +22 15 43.42  ex: -0.005383 px  ey: -0.005188 px
   bottom-left ........... RA:  7 47 55.187  Dec: +21 16 43.60  ex: -0.000473 px  ey: +0.000296 px
   bottom-right .......... RA:  7 41 09.177  Dec: +21 12 26.69  ex: +0.000129 px  ey: -0.000008 px
 

Page last updated: Thu 11 Jan 07:09:29 GMT 2024