13p 20240729 dbartlett

 
_13P_Olbers_RASA11_asi6200mcP_31x60sec_2024_07_28_214144local_JuneLake_California_USA_DEBartlett
 
 
 
Night after night images have shown the large variability of comet 13P/Olbers' plasma tail.  Additionally the location of the predominant jet (s) are not always centered behind this comet's centroid.  From last nights image (see https://astrob.in/6p6e71/C/)showing a jet "low" position to this night's med/high position it seems to follow the switch in direction of the plasma tail (also from low to higher) along its length.  The increased solar activity these past few days certainly may account for the turbidity and irregularity along the comet's expanse.  Hey what do I know...I just like taking comet pictures.
 
 
 

 
 
 
Full Resolution:
 
https://astrob.in/w5neod/C/
 

Backyard setup
scope: RASA 11  fl620mm D279mm
exposure: 31 x 60 sec 
Seeing: 3.5/5
Transparency 8.5/10 
Observer: DEBartlett
Place: June Lake_California USA (Altitude +7700ft)
 
Image Info (Processed ):
(All images processed solely using PixInsight)
Projection ............... Gnomonic
Projection origin ........ [2363.932162 1549.470085] px -> [RA: 11 08 45.440  Dec: +36 39 22.19]
Resolution ............... 2.509 arcsec/px
Rotation ................. 1.609 deg
Reference system ......... ICRS
Observation start time ... 2024-07-29 04:41:44 UTC
Focal distance ........... 618.19 mm
Pixel size ............... 7.52 um
Field of view ............ 3d 17' 43.1" x 2d 9' 35.8"
Image center ............. RA: 11 08 45.439  Dec: +36 39 22.20  ex: -0.007403 px  ey: +0.013343 px
Image bounds:
   top-left .............. RA: 11 17 14.240  Dec: +37 40 18.43  ex: -1.140861 px  ey: -1.070583 px
   top-right ............. RA: 11 00 34.517  Dec: +37 45 44.38  ex: +1.088641 px  ey: -1.080992 px
   bottom-left ........... RA: 11 16 42.130  Dec: +35 30 53.79  ex: -1.081004 px  ey: -0.090525 px
   bottom-right .......... RA: 11 00 29.939  Dec: +35 36 09.97  ex: +2.205379 px  ey: +0.071894 px