Observation's detail view
| Comet | 117P/Helin-Roman-Alu |
|---|---|
| User | seiichi |
| User`s name | |
| Observation's time (UT) | 2014-10-25 09:50:00 |
| Tool | Not set |
| Observation's place | Not set |
| Comparison stars source | AU - ASAS-3 V magnitudes |
| Method | S - Sidgwick`s method |
| Magnitude | 13.5 |
| Coma diameter(') | 0.5 |
| Tail's length | Not set |
| Condensation | 3 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 40 |
| Focal length (mm) | 1600 |
| Type of tool | L - Newtonian reflector |
| Magnification | 257 |
| Field of view (°) | Not set |
| SQM-L in zenith | Not set |
| Light pollution zone | |
| Lm | Not set |
| Comment | |
| Morris Format | 2014 Oct 25.41 UT: m1=13.5, Dia.=0.5', DC=3 ...40-cm (257x) ...Seiichi Yoshida (, ) |