By Terri Butel | 2023-07-11
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On 07/11/2023 11:00 pm by Eliot Herman| Utah Desert and Siding Springs Observatories
There are two nice telescopic comets at present, 2023 E1 (Atlas) in the northern hemisphere and 2021 T4 (Lemmon) in the southern hemisphere. This image is a montage of both, captured with identical eleven inch RASAs and 30 min integration time. Comet 2023 E1 is about mag 9 and 2021 T4 is about mag 10.5. The telescope tracked the comet so long integration tails the background stars.
iTelescope T68 and T69
Astropixel Processor and Photoshop