| Comet | 21P/Giacobini-Zinner |
|---|---|
| User | Fedor |
| User`s name | Fedor Sharov |
| Observation's time (UT) | 2018-08-20 20:45 |
| Tool | SW 127MAK |
| Observation's place | Moscow |
| Magnitude | 7.8 |
| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system |
| Method | S - Sidgwick`s method |
| Coma diameter(') | 2 |
| Tail's length | 4' |
| Condensation | 7 |
| Positional angle of tail | 260 |
| Bortl's scale | Not set |
| Aperture | 13 cm |
| Focal length (mm) | 1500 |
| Type of tool | M - Maksutov reflector |
| Magnification | 62.5 |
| Field of view (°) | 0 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | |
| Morris Format | 2018 Aug 20.86 UT: m1=7.8, Dia.=2', DC=7, Tail: 4 arcmin, in PA 260 deg ...13-cm M (62.5x) ...Fedor Sharov (Moscow, Russian Federation) |
