| Comet | C/2018 W2 (Africano) |
|---|---|
| User | jeff42 |
| User`s name | j-philippe remillieux |
| Observation's time (UT) | 2019-09-21 20:00 |
| Tool | Dobonian Telescope |
| Observation's place | Les confins |
| Magnitude | 9.5 |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | S - Sidgwick`s method |
| Coma diameter(') | 4 |
| Tail's length | Not set |
| Condensation | |
| Positional angle of tail | Not set |
| Bortl's scale | 5 |
| Aperture | 250 mm |
| Focal length (mm) | 1200 |
| Type of tool | L - Newtonian reflector |
| Magnification | 92.3 |
| Field of view (°) | 0.74 |
| SQM-L in zenith | |
| Light pollution zone | Yellow |
| Lm | |
| Comment | About 48° high, 68X magnification, UHC filter, maybe something like a shape's tail. |
| Morris Format | 2019 Sep 21.83 UT: m1=9.5, Dia.=4' ...250-cm L (92.3x) ...j-philippe remillieux (Les confins, France) |
