| Comet | C/2015 V2 (Johnson) |
|---|---|
| User | Peter_Pskov |
| User`s name | Petr Mitrofanov |
| Observation's time (UT) | 2017-04-30 21:42 |
| Tool | Skywatcher BKP25012 |
| Observation's place | Palkino |
| Magnitude | 8.7 |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | M - Morris`s method |
| Coma diameter(') | 3 |
| Tail's length | 5' |
| Condensation | 6 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 25.4 cm |
| Focal length (mm) | 1200 |
| Type of tool | L - Newtonian reflector |
| Magnification | 42.9 |
| Field of view (°) | 0 |
| SQM-L in zenith | |
| Light pollution zone | Blue |
| Lm | |
| Comment | moon (26%, 5 deg) |
| Morris Format | 2017 Apr 30.9 UT: m1=8.7, Dia.=3', DC=6, Tail: 5 arcmin ...25.4-cm L (42.9x) ...Petr Mitrofanov (Palkino, Russia) |
