12p 20240308 dbartlett

Using a Samyang 135mm @ F2.4 and a full frame asi6200mcP, piggybacked on a RASA8, I had a moment between storms last night.  The comet showed interesting dynamics as it hovered above the mountain ridges from light twilight till set - about 40 minutes.  Was able to see some details in M31 as I continued to image after the comet set, for another 38 minutes, until M31 also set.  The comet's color was quite a bit easer to notice than M31 during processing, with its bluish tail standing out.
 Observational details:
Backyard setup
scope: Rokinon = 135mm F2.4
exposure: 19 x 120 sec (comet) 38 x 120 (Starfield)
Seeing: 4.5/5
Transparency 8/10 
Observer: DEBartlett
Place: June Lake_California USA
 
 
Image Info (standard images):
Projection ............... Gnomonic
Projection origin ........ [1535.658691 2361.740294] px -> [RA:  0 29 37.590  Dec: +38 42 26.41]
Resolution ............... 11.972 arcsec/px
Rotation ................. 24.652 deg
Reference system ......... ICRS
Observation start time ... 2024-03-09 03:07:08 UTC
Observation end time ..... 2024-03-09 04:17:44 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 51 N  2360 m
Focal distance ........... 129.57 mm
Pixel size ............... 7.52 um
Field of view ............ 10d 12' 32.8" x 15d 41' 45.9"
Image center ............. RA:  0 29 37.590  Dec: +38 42 26.39  ex: +0.078798 px  ey: -0.006173 px
Image bounds:
   top-left .............. RA:  1 12 38.060  Dec: +43 11 19.76  ex: -1.479622 px  ey: -1.244630 px
   top-right ............. RA:  0 21 37.203  Dec: +47 51 23.60  ex: +0.503661 px  ey: -1.087157 px
   bottom-left ........... RA:  0 35 45.553  Dec: +29 32 51.34  ex: -1.412342 px  ey: +1.858413 px
   bottom-right .......... RA: 23 52 04.6