| Comet | C/2015 C2 (SWAN) |
| User | Koalin |
| User`s name | |
| Observation's time (UT) | 2015-03-15 17:45 |
| Tool | Sky-Watcher 12 Inch Dobsonian Telescope |
| Observation's place | Деревня Dindos, Ignalinos район, Литва |
| Comparison stars source | TK - Tycho-2 Catalogue |
| Method | I - Variable stars (without defocusing) |
| Magnitude | :9.8 |
| Coma diameter(') | 1.5 |
| Tail's length | Not set |
| Condensation | 1 |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 30.5 |
| Focal length (mm) | 1500 |
| Type of tool | L - Newtonian reflector |
| Magnification | 88.2 |
| Field of view (°) | 0.74 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | Not set |
| Comment | Марс был +6,5 град, Солнце -13 град.
Звезду 10,7 видел уверено. 11,9 редко - боковым зрением. |
| Morris Format | 2015 Mar 15.74 UT: m1=9.8:, Dia.=1.5', DC=1 ...30.5-cm L (88.2x) ...Darius Gasiūnas (Деревня Dindos, Ignalinos район, Литва, ) |