13p 20240710 0501 dbartlett

From previous night, where comet 13P/ Olbers "feathered" off into fine filaments of plasma streamers (see https://astrob.in/5019c7/B/), this night showed the comet rotating its most active region upward.  This image may have caught the plasma tail rising from it's lower position to its upper (less favorable for my target framing) leaving remnants of past lower tail activity.  Additionally the sun has been actively shaking up this frosty gaseous visitor disturbing its tail on such a regular basis with unpredictable results.   

The broad dust fantail is still very dominant here.  The richer cometary colors readily displayed themselves even on the raw comet-aligned and integrated image seen below.  Color calibration was performed with PixInsight's SpectrometricColorCalibration process using a white balance of the spectral class of our sun.  Ideally this process lends to a more true rendition of a comet/nebula color however saturation of colors is the processor's choice.

One more night of imaging 13P/ until the moon and weather permits otherwise.  This has been a personal imaging streak of this comet, nightly since June 22.  I have still more than have my data unprocessed.  I look forward with interest as this comet reaches earth's MOID on or around June 20.
Dan 

Full Resolution:
https://astrob.in/1tykij/C/

Backyard setup
scope: RASA 11  fl620mm D279mm
exposure: 40 x 60 sec 
Seeing:2/5
Transparency 8/10 
Observer: DEBartlett
Place: June Lake_California USA (Altitude +7700ft)
 
Image Info (Processed ):
(All images processed solely using PixInsight)
Projection ............... Gnomonic
Projection origin ........ [2282.439709 1410.763113] px -> [RA:  9 29 45.402  Dec: +42 14 03.03]
Resolution ............... 2.510 arcsec/px
Rotation ................. -2.281 deg
Reference system ......... ICRS
Observation start time ... 2024-07-10 05:01:23 UTC
Focal distance ........... 618.08 mm
Pixel size ............... 7.52 um
Field of view ............ 3d 10' 56.2" x 1d 58' 2.0"
Image center ............. RA:  9 29 45.414  Dec: +42 14 03.18  ex: +0.091650 px  ey: -0.019848 px
Image bounds:
   top-left .............. RA:  9 38 16.890  Dec: +43 15 45.61  ex: +0.447125 px  ey: +0.079952 px
   top-right ............. RA:  9 20 49.301  Dec: +43 07 41.95  ex: -0.895433 px  ey: -1.077746 px
   bottom-left ........... RA:  9 38 25.891  Dec: +41 17 48.58  ex: -0.331185 px  ey: +0.443727 px
   bottom-right .......... RA:  9 21 30.018  Dec: +41 09 55.95  ex: -0.990937 px  ey: +0.174574 px