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Here's my sketch of comet C/2013 US10 (Catalina), 22 Aug 2015, using a 4.5" scope and 21mm eyepiece (43x). Funny how through the eyepiece it looked nothing like it is currently photographing! Despite the growing moonlight there was a large very faint outer coma that I could make out to about 8' in diameter, a small brighter inner coma and a bright central condensation that was visible in averted vision. The coma appeared elongated roughly to the east and also to the east was a short subtle brightening that was probably the dust tail. But the latter was so indistinct that it was impossible to assign a P.A. with any certainty.
Cheers -
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