13p 20240727 dbartlett

Another nice night with comet 13P/ Olbers showing its latest plasma tail nuances.  Gone are yesterday's "V" shaped plasma jets and far field disorganization (see https://astrob.in/mq1oj9/B/).  This night's image shows a slight bowing upward, flowing ion rivers with a tail shorter in extent.  The pale yellow dust tail contrasts the plasma tail well in this image due to the higher than normal level of color saturation (difficult to explain this saturation increase, as I had to temper this down in post processing.  Perhaps the sky transparency played a part in its reveal).
 
 
 
Once again the comet is quite easy to pickup in a pair of 18 x 50 binoculars.  In fact the comet looked brighter and it's central concentration appeared at times nearly star like.
Dan
 
 
 
Full Resolution:
https://astrob.in/dzthpu/C/
 
 
 
Backyard setup
scope: RASA 11  fl620mm D279mm
exposure: 30 x 60 sec 
Seeing: 3/5
Transparency 9/10 
Observer: DEBartlett
Place: June Lake_California USA (Altitude +7700ft)
 
Image Info (Processed ):
(All images processed solely using PixInsight)
Projection ............... Gnomonic
Projection origin ........ [2240.497782 1451.958790] px -> [RA: 10 58 51.948  Dec: +37 29 27.91]
Resolution ............... 2.508 arcsec/px
Rotation ................. 1.595 deg
Reference system ......... ICRS
Observation start time ... 2024-07-27 04:42:50 UTC
Focal distance ........... 618.36 mm
Pixel size ............... 7.52 um
Field of view ............ 3d 7' 20.2" x 2d 1' 24.5"
Image center ............. RA: 10 58 51.948  Dec: +37 29 27.91  ex: -0.007222 px  ey: -0.105403 px
Image bounds:
   top-left .............. RA: 11 06 58.914  Dec: +38 26 32.97  ex: -1.070143 px  ey: -1.219827 px
   top-right ............. RA: 10 51 01.377  Dec: +38 31 40.39  ex: -0.048017 px  ey: -0.878567 px
   bottom-left ........... RA: 11 06 29.008  Dec: +36 25 22.85  ex: -1.082252 px  ey: +1.949091 px
   bottom-right .......... RA: 10 50 56.872  Dec: +36 30 18.78  ex: -0.051262 px  ey: +1.093515 px