| Comet | C/2017 S3 (PANSTARRS) | 
|---|---|
| User | Koalin | 
| User`s name | Darius Gasiūnas | 
| Observation's time (UT) | 2018-07-18 22:15 | 
| Tool | Sky-Watcher 12 Inch Dobsonian Telescope | 
| Observation's place | Деревня Dindos, Ignalinos район, Литва | 
| Magnitude | 8: | 
| Comparison stars source | TK - Tycho-2 Catalogue | 
| Method | M - Morris`s method | 
| Coma diameter(') | 3 | 
| Tail's length | Not set | 
| Condensation | 5 | 
| Positional angle of tail | Not set | 
| Bortl's scale | Not set | 
| Aperture | 30.5 cm | 
| Focal length (mm) | 1500 | 
| Type of tool | L - Newtonian reflector | 
| Magnification | 123.3 | 
| Field of view (°) | 0.58 | 
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | Min mag star 14,2m | 
| Morris Format | 2018 Jul 18.93 UT: m1=8:, Dia.=3', DC=5 ...30.5-cm L (123.3x) ...Darius Gasiūnas (Деревня Dindos, Ignalinos район, Литва, ) |