| Comet | 21P/Giacobini-Zinner |
|---|---|
| User | Jerzy Bohusz |
| User`s name | Jerzy Bohusz |
| Observation's time (UT) | 2018-08-16 19:26:00 |
| Tool | TNAk 250 mm |
| Observation's place | Myślin |
| Magnitude | 7.8 |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | B - Bobrovnikoff`s method |
| Coma diameter(') | 5.2 |
| Tail's length | 30' |
| Condensation | 4/ |
| Positional angle of tail | 265 |
| Bortl's scale | Not set |
| Aperture | 25 cm |
| Focal length (mm) | 1175 |
| Type of tool | L - Newtonian reflector |
| Magnification | 45.2 |
| Field of view (°) | 1.33 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | |
| Morris Format | 2018 Aug 16.81 UT: m1=7.8, Dia.=5.2', DC=4.5, Tail: 30 arcmin, in PA 265 deg ...25-cm L (45.2x) ...Jerzy Bohusz (Myślin, Poland) |
