C/2023 E1 (ATLAS) 2023-Jul-09 Dan Bartlett

10.2 Magnitude Comet C/2023 E1 (ATLAS)
These images stack almost two hours of integration time as this comet is at declination of around 80 degrees N. I've attempted to "go deep" and bring out the faint plasma tail, in so doing the IFN in and around Ursa Minor makes the field messy.

I used the color calibration method found here to make the comet as "true" to color as possible although the saturation has been exploited somewhat. As usual I like to post an inverted color image since it highlights some of the fainter details as well as galaxies in the area.

I'm also using a new scope here since my dark mountain skies seem to be okay with the added aperture and fast F#.

Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 57 x120 sec
Seeing: 4/5
Transparency: 8/10
Observer: DEBartlett
Location: June Lake, California, USA

CometOnly Images (Full resolution-stars removed)
Resolution ............... 1.064 arcsec/px
Rotation ................. -1.338 deg
Reference system ......... ICRS
Observation start time ... 2023-07-10 06:54:11 UTC
Observation end time ..... 2023-07-10 06:56:11 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 728.93 mm
Pixel size ............... 3.76 um
Field of view ............ 1d 28' 34.5" x 1d 6' 52.2"
Image center ............. RA: 16 53 33.408 Dec: +80 26 21.17 ex: -0.000708 px ey: +0.000056 px
Image bounds:
top-left .............. RA: 17 12 04.209 Dec: +80 59 03.51 ex: -0.005045 px ey: -0.000822 px
top-right ............. RA: 16 34 26.143 Dec: +80 56 57.18 ex: +0.048273 px ey: -0.038153 px
bottom-left ........... RA: 17 10 38.293 Dec: +79 52 19.70 ex: -0.002870 px ey: +0.002053 px
bottom-right .......... RA: 16 37 07.633 Dec: +79 50 24.64 ex: +0.005601 px ey: +0.002994 px

Published Images on Astrobin (link)
Projection ............... Gnomonic
Projection origin ........ [1430.798844 1080.185521] px -> [RA: 16 53 33.557 Dec: +80 26 21.56]
Resolution ............... 1.858 arcsec/px
Rotation ................. -1.334 deg
Reference system ......... ICRS
Observation start time ... 2023-07-10 06:54:11 UTC
Observation end time ..... 2023-07-10 06:56:11 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 728.99 mm
Pixel size ............... 6.57 um
Field of view ............ 1d 28' 34.4" x 1d 6' 52.3"
Image center ............. RA: 16 53 33.557 Dec: +80 26 21.56 ex: -0.000514 px ey: -0.000083 px
Image bounds:
top-left .............. RA: 17 12 04.356 Dec: +80 59 03.89 ex: -0.002816 px ey: -0.000214 px
top-right ............. RA: 16 34 26.295 Dec: +80 56 56.87 ex: +0.026516 px ey: -0.017781 px
bottom-left ........... RA: 17 10 38.151 Dec: +79 52 20.18 ex: -0.004210 px ey: +0.002617 px
bottom-right .......... RA: 16 37 07.805 Dec: +79 50 25.14 ex: +0.000752 px ey: +0.002804 px