Uploaded by

BAA Comet Section

Observer

dbartlett

Observed

2022 Dec 23 - 00:00

Uploaded

2022 Dec 31 - 19:03

Objects

81P Wild

Planetarium overlay

Constellation

Virgo

Field centre

RA: 14^h08^m
Dec: -10°56'
Position angle: +2°43'

Field size

1°24' × 1°49'

Full filename

81p/81p_20221223_dbartlett.jpg

Target name

81P Wild

Title

Currently fifth brightest comet in our sky, hovering right around magnitude 11 and just passing perihelion on December 15, 2022, is 81P/ Wild.  Occupying the same time slot as the brightening charismatic C/2022 E3 ZTF comet 81P/ Wild is not a favorite target of mine to image. With a mostly cloudy night on 12-23 the weather forecast called for a small window of clearing at 04:00 that morning. Here is 41 x 60 second subs stacked from that small window of opportunity. ???????Enjoy! Observational details: Backyard setup scope: C11 RASA D = 279mm; fl =618mm; F# 2.2 camera: asi 2600mcP exposure: 41 x60 sec Seeing: 2.5/5 Transparency: 5/10 Observer: DEBartlett Location: June Lake, California, USA Full Res Cropped image Details: WCS transformation ....... Linear Projection ............... Gnomonic Projection origin ........ [1634.012697 1013.989765] px -> [RA: 14 08 12.365 Dec: -10 51 46.98] Resolution ............... 1.255 arcsec/px Rotation ................. 2.753 deg Reference system ......... ICRS Observation start time ... 2022-12-23 13:34:30 UTC Observation end time ..... 2022-12-23 13:35:30 UTC Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m Focal distance ........... 618.09 mm Pixel size ............... 3.76 um Field of view ............ 1d 8' 20.5" x 42' 24.6" Image center ............. RA: 14 08 12.366 Dec: -10 51 47.00 Image bounds: top-left .............. RA: 14 10 35.337 Dec: -10 32 13.35 top-right ............. RA: 14 05 57.664 Dec: -10 28 54.97 bottom-left ........... RA: 14 10 27.412 Dec: -11 14 35.35 bottom-right .......... RA: 14 05 49.083 Dec: -11 11 16.51 Full Frame Image details(Both): Projection ............... Gnomonic Projection origin ........ [1015.000614 1311.998367] px -> [RA: 14 08 45.121 Dec: -10 56 39.52] Resolution ............... 2.510 arcsec/px Rotation ................. 2.724 deg Reference system ......... ICRS Observation start time ... 2022-12-23 13:34:30 UTC Observation end time ..... 2022-12-23 13:35:30 UTC Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m Focal distance ........... 617.93 mm Pixel size ............... 7.52 um Field of view ............ 1d 24' 55.7" x 1d 49' 46.7" Image center ............. RA: 14 08 45.121 Dec: -10 56 39.52 Image bounds: top-left .............. RA: 14 11 47.930 Dec: -10 03 48.81 top-right ............. RA: 14 06 03.455 Dec: -9 59 44.93 bottom-left ........... RA: 14 11 27.824 Dec: -11 53 28.77 bottom-right .......... RA: 14 05 41.223 Dec: -11 49 23.39   _._,_._,_