| Comet | 41P/Tuttle-Giacobini-Kresak
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| User | Peter_Pskov |
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| User`s name | |
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| Observation's time (UT) | 2017-04-19 22:45 |
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| Tool | Bresser 20x80 |
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| Observation's place | Izborsk |
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| Comparison stars source | TK - Tycho-2 Catalogue |
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| Method | B - Bobrovnikoff`s method |
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| Magnitude | 7.4 |
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| Coma diameter(') | 17 |
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| Tail's length | Not set |
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| Condensation | 3 |
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| Positional angle of tail | Not set |
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| Bortl's scale | Not set |
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| Aperture | 8 |
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| Focal length (mm) | Not set |
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| Type of tool | B - Binoculars |
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| Magnification | 20 |
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| Field of view (°) | 3.2 |
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| SQM-L in zenith | |
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| Light pollution zone | Blue |
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| Lm | |
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| Comment | visual comparison of brightness with the galaxy М101 |
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| Morris Format | 2017 Apr 19.95 UT: m1=7.4, Dia.=17', DC=3 ...8-cm B (20x) ...Petr Mitrofanov (Izborsk, Russia) |
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