| Comet | C/2017 T2 (PANSTARRS) |
|---|
| User | jeff42 |
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| User`s name | |
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| Observation's time (UT) | 2020-02-23 02:00:00 |
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| Tool | Dobonian Telescope |
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| Observation's place | Les confins |
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| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system |
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| Method | B - Bobrovnikoff`s method |
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| Magnitude | 9.4 |
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| Coma diameter(') | 3 |
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| Tail's length | Not set |
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| Condensation | Not set |
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| Positional angle of tail | Not set |
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| Bortl's scale | 4 |
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| Aperture | 250 |
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| Focal length (mm) | 1200 |
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| Type of tool | L - Newtonian reflector |
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| Magnification | 68.6 |
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| Field of view (°) | 1.09 |
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| SQM-L in zenith | |
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| Light pollution zone | Yellow |
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| Lm | |
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| Comment | Core clearly visible with 250mm aperture (tail, hardly). bad weather conditions (bad transparency,2/5) |
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| Morris Format | 2020 Feb 23.08 UT: m1=9.4, Dia.=3' ...250-cm L (68.6x) ...j-philippe remillieux (Les confins, France) |
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