2022u2 20230120 dbartlett

C/2022 U2 ATLAS from 2023-01-21
I've included two full-scale 1.251"/pix scale starless images for a change.  Do they hint at a small tail??? 


Observational details:
Backyard setup
scope: C11 RASA D = 279mm; fl =618mm; F# 2.2
camera: asi 2600mcP
exposure: 113 x45 sec
Seeing: 4/5
Transparency: 8/10
Observer: DEBartlett
Location: June Lake, California, USA

Image Details:
Starless Full-scale:
Resolution ............... 1.252 arcsec/px
Rotation ................. 0.081 deg 
Observation start time ... 2023-01-21 06:17:47 UTC
Focal distance ........... 619.32 mm
Pixel size ............... 3.76 um
 
HalfScale
WCS transformation ....... Linear
Projection ............... Gnomonic
Projection origin ........ [1377.500029 877.499993] px -> [RA:  3 15 14.262  Dec: +68 36 54.24]
Resolution ............... 2.504 arcsec/px
Rotation ................. 0.081 deg
Reference system ......... ICRS
Observation start time ... 2023-01-21 06:17:47 UTC
Observation end time ..... 2023-01-21 06:18:32 UTC
Geodetic coordinates ..... 119 04 46 W  37 46 30 N  2357 m
Focal distance ........... 619.33 mm
Pixel size ............... 7.52 um
Field of view ............ 1d 54' 59.9" x 1d 13' 15.4"
Image center ............. RA:  3 15 14.262  Dec: +68 36 54.24
Image bounds:
   top-left .............. RA:  3 26 02.728  Dec: +69 12 10.85
   top-right ............. RA:  3 04 26.782  Dec: +69 12 20.47
   bottom-left ........... RA:  3 25 27.420  Dec: +67 59 00.87
   bottom-right .......... RA:  3 05 00.029  Dec: +67 59 10.00

Page last updated: Fri 12 May 07:10:16 BST 2023