| Comet | 17P/Holmes |
|---|---|
| User | Norm |
| User`s name | Neil Norman |
| Observation's time (UT) | 2007-12-12 |
| Tool | Binoculars |
| Observation's place | Ipswich |
| Magnitude | 2.8 |
| Comparison stars source | AE - Planetary magnitudes from the American Ephemeris and Nautical Almanac |
| Method | M - Morris`s method |
| Coma diameter(') | 60 |
| Tail's length | Not set |
| Condensation | 4 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 5 cm |
| Focal length (mm) | Not set |
| Type of tool | B - Binoculars |
| Magnification | 10 |
| Field of view (°) | 6 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | Not set |
| Comment | |
| Morris Format | 2007 Dec 12 UT: m1=2.8, Dia.=60', DC=4 ...5-cm B (10x) ...Neil Norman (Ipswich, England) |
