C/2023 H2 (Lemmon) 2023-Oct-24 Dan Bartlett

- Getting Brighter, 9th Magnitude Comet C/2023 H2 Lemmon Floats Thru Canes Venatici 2023-10-24 -
Slated to brighten to better than 7th magnitude, comet C/2023 H2 Lemmon has shown a significant brightening since last I imaged. Perihelion is in 5 days, while orbital crossing is two days later. November 10th shows it's closest approach to the earth and perhaps the brightest in and around this time period...actually anybody's guess! I'm looking forward to this one.

ASTROBIN Full Res: https://astrob.in/yw8hv3/B/

Observational details:
Backyard setup
scope: C14 D = 356mm; fl =729mm; F# 2
camera: asi 2600mcP
exposure: 76 x60 sec
Seeing: 4/5 Transparency: 8/10
Observer: DEBartlett

Image Details (All):
Projection ............... Gnomonic
Projection origin ........ [738.643091 1270.789314] px -> [RA: 12 55 57.210 Dec: +49 35 40.74]
Resolution ............... 2.128 arcsec/px
Rotation ................. -1.166 deg
Reference system ......... ICRS
Observation start time ... 2023-10-24 12:33:59 UTC
Observation end time ..... 2023-10-24 12:34:59 UTC
Geodetic coordinates ..... 119 04 46 W 37 46 30 N 2357 m
Focal distance ........... 729.05 mm
Pixel size ............... 7.52 um
Field of view ............ 52' 20.3" x 1d 30' 4.1"
Image center ............. RA: 12 55 57.239 Dec: +49 35 40.67 ex: +0.064876 px ey: -0.104087 px
Image bounds:
top-left .............. RA: 12 58 35.079 Dec: +50 21 02.03 ex: -1.192050 px ey: -1.137078 px
top-right ............. RA: 12 53 07.556 Dec: +50 19 55.36 ex: +0.210720 px ey: -1.400572 px
bottom-left ........... RA: 12 58 41.898 Dec: +48 51 03.49 ex: -1.460531 px ey: +0.194324 px
bottom-right .......... RA: 12 53 23.987 Dec: +48 50 01.17 ex: +0.012584 px ey: +0.341427 px