| Comet | 21P/Giacobini-Zinner |
|---|---|
| User | AHale |
| User`s name | Alan Hale |
| Observation's time (UT) | 2018-05-24 10:04:00 |
| Tool | 41-cm reflector |
| Observation's place | |
| Magnitude | 14.3 |
| Comparison stars source | AE - Planetary magnitudes from the American Ephemeris and Nautical Almanac |
| Method | |
| Coma diameter(') | 0.3 |
| Tail's length | Not set |
| Condensation | 4 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 40.64 cm |
| Focal length (mm) | 1828.8 |
| Type of tool | L - Newtonian reflector |
| Magnification | 228.6 |
| Field of view (°) | 0 |
| SQM-L in zenith | |
| Light pollution zone | Blue |
| Lm | |
| Comment | |
| Morris Format | 2018 May 24.42 UT: m1=14.3, Dia.=0.3', DC=4 ...40.64-cm L (228.6x) ...Alan Hale (, ) |
