| Comet | C/2015 ER61 (PANSTARRS) |
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| User | JJGonzalez |
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| User`s name | |
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| Observation's time (UT) | 2017-01-01 06:00:00 |
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| Tool | 20.3 cm SCT |
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| Observation's place | Puerto de las Señales, Leon |
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| Comparison stars source | TK - Tycho-2 Catalogue |
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| Method | S - Sidgwick`s method |
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| Magnitude | 10.2 |
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| Coma diameter(') | 4.5 |
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| Tail's length | Not set |
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| Condensation | 1.5 |
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| Positional angle of tail | Not set |
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| Bortl's scale | Not set |
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| Aperture | 20.3 |
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| Focal length (mm) | 2000 |
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| Type of tool | T - Schmidt-Cassegrain reflector |
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| Magnification | 76.9 |
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| Field of view (°) | 0 |
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| SQM-L in zenith | 21.7 |
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| Light pollution zone | |
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| Lm | |
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| Comment | Very faint and diffuse outer coma. Altitude: 17 deg. Zodiacal light. Field stars checked in DSS. |
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| Morris Format | 2017 Jan 1.25 UT: m1=10.2, Dia.=4.5', DC=1.5 ...20.3-cm T (76.9x) ...Juan Jose Gonzalez Suarez (Puerto de las Señales, Leon, Spain) |
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