| Comet | C/2013 US10 (Catalina) |
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| User | Rob Kaufman |
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| User`s name | Robert Kaufman |
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| Observation's time (UT) | 2015-08-22 11:09:00 |
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| Tool | 11.4-cm Newtonian reflector |
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| Observation's place | Bright, Victoria |
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| Magnitude | 7.4 |
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| Comparison stars source | TK - Tycho-2 Catalogue |
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| Method | M - Morris`s method |
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| Coma diameter(') | 8 |
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| Tail's length | Not set |
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| Condensation | 4 |
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| Positional angle of tail | Not set |
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| Bortl's scale | 3 |
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| Aperture | 11.4 cm |
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| Focal length (mm) | 900 |
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| Type of tool | L - Newtonian reflector |
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| Magnification | 42.9 |
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| Field of view (°) | 1.28 |
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| SQM-L in zenith | |
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| Light pollution zone | Green |
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| Lm | |
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| Comment | 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. Moonlight interference. |
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| Morris Format | 2015 Aug 22.46 UT: m1=7.4, Dia.=8', DC=4 ...11.4-cm L (42.9x) ...Robert Kaufman (Bright, Victoria, Australia) |
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