2023a3 20240912 mmattiazzo

I managed to capture C/2023 A3 Tsuchinshan-ATLAS this morning, deep in twilight, situated only 14.6 degrees from the sun.
This image taken on 2024 September 12 at 19:43UT using a Canon 6D + Sigma 200mm lens.
10 x 2 seconds at iso1600. FOV 5 deg. North lower left. from Swan Hill, Victoria, Aus.
The comet looks comparable to Delta Sextans (mag5.2) at same altitude, maybe a touch brighter.
This is consistent with light curve parameters of Ho 6.2 and n 3.1 as reported on COBS.
Terry Lovejoy made the morning sky recovery on Sep 11.794, 2024 estimating approximately m1=5.5