Comet 46P/Wirtanen
Taken by V. Mette on December 7, 2018 @ iTelescope T12 - Siding Spring Observatory, NSW, Australia
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  Camera Used: Finger Lakes Instrumentation (FLI) MicroLine ML 11002
Exposure Time: 600/1
Aperture: f/5.0
ISO: Unavailable
Date Taken: 2018:12:07 11:47:43
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Actually 46Ps coma diameter seems to be about 60 arcmins on this L-channel image. You can begin to imagine a faint tail forming out to the middle of the upper margin. In a high-contrast copy the tail is clearly visible and spans beyond the CCDs frame.

The elevation of Comet Wirtanen was about 65 deg. when recording this remote-image in Australia and it was really hard to capture the tail. But the situation soon will improve for observers in higher latitudes - expecting to catch the tail during next week out of the central region of Germany with my own equipment ...

Remote-telescope - iTelescope T12
Frame size: 2.6 x 3.9 deg.
L-channel @ 2x binning

You may discover a full dataset in EXIF-header
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