| Comet | 21P/Giacobini-Zinner |
|---|---|
| User | Sergey-B |
| User`s name | Sergey Bezruchenko |
| Observation's time (UT) | 2018-08-11 12:30 |
| Tool | SW DOB 200/1000 |
| Observation's place | с.Чугуевка |
| Magnitude | 8.3 |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | M - Morris`s method |
| Coma diameter(') | 3.5 |
| Tail's length | 4' |
| Condensation | 5/ |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 20 cm |
| Focal length (mm) | 1000 |
| Type of tool | L - Newtonian reflector |
| Magnification | 58.8 |
| Field of view (°) | 0.88 |
| SQM-L in zenith | |
| Light pollution zone | Green |
| Lm | 5 |
| Comment | |
| Morris Format | 2018 Aug 11.52 UT: m1=8.3, Dia.=3.5', DC=5.5, Tail: 4 arcmin ...20-cm L (58.8x) ...Sergey Bezruchenko (с.Чугуевка, Россия) |
