C/2021 Y1 (ATLAS) 2022-Sep-23 Dan Bartlett

C/2021 Y1 ATLAS imaged on two nights Sept 22 & 23 2022 as it moved in rich starfield of the "Flaming Star" nebula. A little over 6 hours was used to register, stack and process in PixInsight. These are strictly broadband images where both full resolution images can be found on ASTROBIN https://astrob.in/pi5cvt/0/.

Observational Info:
scope: RASA11 D = 279mm; fl =618mm; F# 2.2
camera: asi 2600mcP
Seeing: 4/5
Transparency: 9/10
Observer: DEBartlett
Location: June Lake, California, USA

Image details:
WCS transformation ....... Thin plate spline
Projection ............... Gnomonic
Projection origin ........ [1565.788388 2343.532380] px -> [RA: 5 15 56.455 Dec: +33 46 53.06]
exposure: 48x180 sec on 2022-09-22 025316PDT & 70 x 180sec on 2022-09-23 030552PDT
Resolution ............... 1.670 arcsec/px
Rotation ................. -1.307 deg
Reference system ......... ICRS
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 619.04 mm
Pixel size ............... 5.01 um
Field of view ............ 1d 27' 11.5" x 2d 10' 27.2"
Image center ............. RA: 5 15 56.476 Dec: +33 46 53.02 ex: +0.034153 px ey: -0.116091 px
Image bounds:
top-left .............. RA: 5 19 21.629 Dec: +34 52 52.97 ex: +0.023646 px ey: -0.099688 px
top-right ............. RA: 5 12 16.847 Dec: +34 50 51.57 ex: +0.128783 px ey: -0.414390 px
bottom-left ........... RA: 5 19 30.725 Dec: +32 42 28.23 ex: -0.001809 px ey: -0.000594 px
bottom-right .......... RA: 5 12 36.501 Dec: +32 40 30.93 ex: +0.046158 px ey: -0.178713 px