126p 20230720 dbartlett

Estimated at Magnitude 14.8, Comet 126P IRAS has just passed perihelion on July 5, 2023 and is 1.6 au from Earth.  I generally image comets closer or brighter (or both) however I had a window of opportunity this AM (July 20), just prior to dawn and captured 49 x 120 seconds for this stack.  It's difficult to see where the comet's tail ends due to the brightness and inopportunity of some of the IFN right where you don't want it.   

Cheers,
Dan
 
 Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 49 x120 sec
Seeing: 4/5
Transparency: 9/10
Observer: DEBartlett
Location: June Lake, California, USA
 
Image Info (ALL)
Projection ............... Gnomonic
Projection origin ........ [1080.004068 1340.363851] px -> [RA:  2 13 14.561  Dec: +17 46 01.17]
Resolution ............... 1.877 arcsec/px
Rotation ................. -3.972 deg
Reference system ......... ICRS
Observation start time ... 2023-07-20 10:33:06 UTC
Observation end time ..... 2023-07-20 10:35:06 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 30 N  2357 m
Focal distance ........... 728.88 mm
Pixel size ............... 6.63 um
Field of view ............ 1d 7' 33.8" x 1d 23' 53.5"
Image center ............. RA:  2 13 14.585  Dec: +17 46 01.10  ex: -0.000049 px  ey: +0.000044 px
Image bounds:
   top-left .............. RA:  2 15 24.216  Dec: +18 30 03.16  ex: -0.000622 px  ey: -0.001094 px
   top-right ............. RA:  2 10 40.366  Dec: +18 25 22.00  ex: +0.001368 px  ey: -0.000815 px
   bottom-left ........... RA:  2 15 47.856  Dec: +17 06 27.05  ex: -0.000673 px  ey: +0.000197 px
   bottom-right .......... RA:  2 11 05.799  Dec: +17 01 47.02  ex: +0.000350 px  ey: +0.000180 px