I could enjoy astroimaging through Saturday night. It was clear and calm, though weather forecast suggested windy night after storm.
The comet was approaching us and looked bigger than before. It was drifting very slowly toward east southeast in Serpens. Dust coma was small and round, and dust tail was toward northeast, curving toward east. Bluish green ion halo was round and small. Ion tail was faint toward north northeast, though it was almost indetectable. North is up, and east is to the left on the frame.
Sun Distance: 1.343AU
Earth Distance: 1.830AU
The comet taken on October 20, 2022 with the same equipment and presented in the same scale:
www.flickr.com/photos/hiroc/52442756492
equipment: AstroPhysics 130GTX "Granturismo," Field Flattener at f/6.7 focal length 873mm, 22.1mm Spacer, EOS Adapter, Kipon EOS-EOS R adapter, and Canon EOS R-SP4II, modified by Seo-san on Vixen AXD Equatorial Mount, auto guided at a star nearby with Fujinon 1:2.8/75mm C-Mount Lens, Pentax x2 Extender, ZWO ASI 120MM-mini, GPUSB, and PHD2 Guiding with comet tracking on
exposure: 6 times x 360 seconds, 3 x 180 sec, and 5 x 60 seconds at ISO 1,600 and f/6.7 focal length 873mm
The first exposure started at 19:46:50UTC November 26, 2022. The object was yet low in the east in the morning sky.
site: 733m above sea level at lat. 35 22 03 North and long. 138 32.59 East in Asagiri Highland 静岡県朝霧高原. Ambient temperature was around 5 degrees Celsius or 41 degrees Fahrenheit. Wind was mild. SQML reached 21.08. Seeing was bad, and guide error RMS was around 3" at the low elevation in the sky as you see the bloated stars on the frame. Result of imaging looked better after the beginning of twilight. Elevation was 8.5 degrees at the beginning and 18.3 degrees above horizon at the end in twilight.
Here is a frame of the site at the night.
www.flickr.com/photos/hiroc/52531385750/in/photostream/ 