103p 20230907 dbartlett

10.5 Magnitude Comet 103P/ Hartley Highlighted in Front of a Crowded Sky , 2023-09-07.
???????210 frames @ 45 seconds each were stacked in a field of rich IFN.  I kept the exposures low since the 3rd quarter moon was up for the entirety of the shoot.  This comet is closest to earth on September 26 and perihelion on October 12, 2023.  Not expected to brighten significantly but anyone can hope.

Astrobin:https://astrob.in/mslds0/B/

Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 210 x45 sec
Seeing: 4/5
Transparency: 7/10
Observer: DEBartlett
Location: June Lake, California, USA
 
 
Image Info:
Projection ............... Gnomonic
Projection origin ........ [1395.202112 941.981808] px -> [RA:  3 32 07.541  Dec: +43 03 02.66]
Resolution ............... 2.127 arcsec/px
Rotation ................. -6.305 deg
Reference system ......... ICRS
Observation start time ... 2023-09-07 09:55:14 UTC
Observation end time ..... 2023-09-07 09:55:59 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 30 N  2357 m
Focal distance ........... 729.13 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 38' 55.3" x 1d 6' 48.0"
Image center ............. RA:  3 32 07.552  Dec: +43 03 02.38  ex: +0.017693 px  ey: -0.007502 px
Image bounds:
   top-left .............. RA:  3 36 18.934  Dec: +43 41 19.65  ex: -0.032490 px  ey: -0.143609 px
   top-right ............. RA:  3 27 16.475  Dec: +43 30 24.24  ex: +0.233827 px  ey: -0.130205 px
   bottom-left ........... RA:  3 36 54.212  Dec: +42 34 55.32  ex: +0.023364 px  ey: -0.044779 px
   bottom-right .......... RA:  3 28 01.313  Dec: +42 24 10.94  ex: -0.054195 px  ey: +0.155367 px