This morning at 5:00am local time (20240919.795UT) I observed comet Tsuchinshan with 15x70mm binoculars and photographed it from 5:06-5:08am.
Astronomical Twilight broke at 4:30am 35 minutes before the exposures.
The first image below is camera on fixed tripod, no tracking, ISO 3200 33 x 1s exposures 135mm f2. The 33 exposures were stacked.
For those of you not into stacking, the second photo is a single 1s exposure, ISO 3200, 135mm f2 lens with Adobe AI noise reduction applied.
The current brightening models have a range of increase between 10x brighter to 100X brighter over the next 10 days.
In the binoculars, the comet was sporting a roughly 1/2 deg tail.
Game on!
cheers
Joe Cali (OzEclipse)