| Comet | C/2009 Y1 (Catalina) |
|---|---|
| User | slava03 |
| User`s name | Vyacheslav Ivanov |
| Observation's time (UT) | 2011-08-31 21:50:00 |
| Tool | 10"SW на экваториале с часовиком |
| Observation's place | Поле |
| Magnitude | 14: |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | S - Sidgwick`s method |
| Coma diameter(') | 0.7 |
| Tail's length | Not set |
| Condensation | 3 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 25.4 cm |
| Focal length (mm) | 1200 |
| Type of tool | L - Newtonian reflector |
| Magnification | 171.4 |
| Field of view (°) | 0.48 |
| SQM-L in zenith | Not set |
| Light pollution zone | Blue |
| Lm | Not set |
| Comment | |
| Morris Format | 2011 Aug 31.91 UT: m1=14:, Dia.=0.7', DC=3 ...25.4-cm L (171.4x) ...Vyacheslav Ivanov (Поле, Russia) |
