13P/Olbers 2024-May-09 Dan Bartlett

_13P_Olbers_C14SCTHyper_asi2600mcP_27x30sec_2024_05_09_211919PDT_JuneLake_California_USA_DEBartlett

Stars settled a bit as comet 13P/Olbers appeared to show more activity than the prior postings. The comet started the imaging session at 16 degrees altitude, in late twilight, when a dark cumulus cloud entered the scene. I managed to save 27 of the 58 x 30 second exposures for this stacked image. The sky conditions otherwise were good allowing for a more colorful cometary appearance. Also noted near the comet's brightened pseudo nucleus is a "V" shape detachment as well as many more streamers/ jets of increased activity.

Please excuse the roughness of the image since I am dealing with less than 14 minutes of data. (BlurXterminator wasn't used for star reduction ...avg FWHM ~ 3.9). The crescent moon was less than 3.5 degrees away from the comet.

Full Resolution Image:
https://astrob.in/gcr6nq/C/

Observational details:
Backyard setup
scope: C14 HyperStar fl728mm D356mm
exposure: 27 x 30 sec
Seeing: 3/5
Transparency 8/10
Observer: DEBartlett
Place: June Lake_California USA

Image Info (Processed )
Projection ............... Gnomonic
Projection origin ........ [1528.263044 991.592462] px -> [RA: 5 05 08.284 Dec: +29 58 42.00]
Resolution ............... 2.131 arcsec/px
Rotation ................. -1.584 deg
Reference system ......... ICRS
Observation start time ... 2024-05-10 04:03:49 UTC
Observation end time ..... 2024-05-10 04:31:28 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m
Focal distance ........... 728.03 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 48' 31.9" x 1d 10' 25.5"
Image center ............. RA: 5 05 08.283 Dec: +29 58 42.00 ex: +0.008082 px ey: -0.195004 px
Image bounds:
top-left .............. RA: 5 09 15.640 Dec: +30 35 09.94 ex: -1.109629 px ey: -1.231562 px
top-right ............. RA: 5 00 52.552 Dec: +30 31 53.07 ex: +2.151480 px ey: -1.256952 px
bottom-left ........... RA: 5 09 21.301 Dec: +29 24 58.45 ex: -1.116433 px ey: +0.724031 px
bottom-right .......... RA: 5 01 03.874 Dec: +29 21 43.18 ex: +0.997126 px ey: +1.952485 px