12P/Pons Brooks 2023-Dec-04 Dan Bartlett

_12P_Pons_Brooks_C14HyperStar_asi2600mcP_126x30sec_2023_12_04_184135PST_JuneLake_California_USA_DEBartlett

An exceptional night of astrophotography where the final stack, straight from WBPP in PixInsight, showed the average star size to be 2.47FWHM, even with the presence of Vega. Still, processing was a beast due to the ghosted blue reflection of Vega in random places through out the FOV.

Full Resolution: https://astrob.in/2qqyw4/B/

Observational details:
Backyard setup
scope: C14HyperStar D = 356mm; fl =729mm;
exposure: 126 x 30 sec
Seeing: 5/5
Transparency: 9/10
Observer: DEBartlett
Place: June Lake_California USA

Image Details (both):
Projection ............... Gnomonic
Projection origin ........ [2001.532715 1649.803037] px -> [RA: 18 35 10.733 Dec: +38 40 22.60]
Resolution ............... 1.065 arcsec/px
Rotation ................. -3.093 deg
Reference system ......... ICRS
Observation start time ... 2023-12-05 02:41:35 UTC
Observation end time ..... 2023-12-05 02:42:05 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 728.47 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 11' 2.8" x 58' 33.3"
Image center ............. RA: 18 35 10.735 Dec: +38 40 22.65 ex: +0.058684 px ey: -0.013745 px
Image bounds:
top-left .............. RA: 18 38 05.409 Dec: +39 11 21.66 ex: -1.466555 px ey: -1.297666 px
top-right ............. RA: 18 31 59.879 Dec: +39 07 29.19 ex: +0.557526 px ey: -0.792952 px
bottom-left ........... RA: 18 38 18.913 Dec: +38 12 56.09 ex: -2.461983 px ey: -0.333546 px
bottom-right .......... RA: 18 32 18.447 Dec: +38 09 07.84 ex: -0.095452 px ey: +0.176718 px