13P/Olbers 2024-Jun-29 Dan Bartlett

_13P_Olbers_C14Hyperstar_asi2600mcP_60x30sec_2024_06_29_215850Local_JuneLake_California_USA_DEBartlett
&
_13P_Olbers_RASA11_asi6200mcP_30x60sec_2024_06_29_220326Local_JuneLake_California_USA_DEBartlett

A quick look back at comet 13P/ Olbers on Perihelion, June 30, 2024. Both widefield and closeup rigs were setup and imaged for this date. Due to a large amount of smoke from California wildfires I neglected processing either sets of data, until now. Although this version does show some of the twists and turns of the evening, I can't help but like the widefield (RASA11 + Fullframe) a little better, due to the expanse of the tail.

Surprising me most is how two imaging rigs, with near identical imaging time can produce such differing results, especially with color saturation at play. The RASA 11 surpassed the C14 Hyperstar when color saturation is compared. The other surprise is how SPCC in PixInsight was able to correct the overall color despite the heavily "redden" color (both individual subs and the final integration) due to the heavy smoke settling through my mountain valley. Gradient correction and color calibration were lifesavers here.

Onward to new image data over the next several days.
Dan


Backyard setup
scope: C14 HyperStar fl728mm D356mm
exposure: 60 x 30 sec
Seeing: 3/5
Transparency 6/10 (smokey)
Observer: DEBartlett
Place: June Lake_California USA (Altitude +7700ft)

Full Resolution Image:
https://astrob.in/xtstit/B/

Image Info (Processed images):
(All images processed solely using PixInsight)
Projection ............... Gnomonic
Projection origin ........ [1489.965166 939.906934] px -> [RA: 8 33 19.875 Dec: +43 11 45.68]
Resolution ............... 3.790 arcsec/px
Rotation ................. -2.474 deg
Reference system ......... ICRS
Observation start time ... 2024-06-30 04:44:56 UTC
Observation end time ..... 2024-06-30 05:30:22 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 51 N 2360 m
Focal distance ........... 409.18 mm
Pixel size ............... 7.52 um
Field of view ............ 3d 8' 15.1" x 1d 58' 45.8"
Image center ............. RA: 8 33 19.876 Dec: +43 11 45.70 ex: -0.000191 px ey: +0.000100 px
Image bounds:
top-left .............. RA: 8 41 50.294 Dec: +44 13 58.38 ex: -1.099106 px ey: -1.098999 px
top-right ............. RA: 8 24 24.353 Dec: +44 06 03.52 ex: +0.112020 px ey: -1.098943 px
bottom-left ........... RA: 8 41 58.843 Dec: +42 14 55.84 ex: -1.305557 px ey: +1.108486 px
bottom-right .......... RA: 8 25 06.020 Dec: +42 07 11.91 ex: +0.152691 px ey: +2.161143 px