| Comet | C/2017 E4 (Lovejoy) |
|---|---|
| User | Castor 98 |
| User`s name | Marek Biely |
| Observation's time (UT) | 2017-04-02 02:14:00 |
| Tool | 20x80 binoculars |
| Observation's place | Brno (244 m a.s.l.) |
| Magnitude | 6.8 |
| Comparison stars source | HJ - Magnitudes in the Hipparcos photometric system |
| Method | M - Morris`s method |
| Coma diameter(') | 5.5 |
| Tail's length | Not set |
| Condensation | 5/ |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 8 cm |
| Focal length (mm) | Not set |
| Type of tool | B - Binoculars |
| Magnification | 20 |
| Field of view (°) | 2.5 |
| SQM-L in zenith | |
| Light pollution zone | |
| Lm | |
| Comment | Nice, well condensed object with an elongated coma. Low altitude: 11.9 deg. above the horizon. Corrected for an atmospheric extinction by using "average" table. |
| Morris Format | 2017 Apr 2.09 UT: m1=6.8, Dia.=5.5', DC=5.5 ...8-cm B (20x) ...Marek Biely (Brno (244 m a.s.l.), Czech Republic) |
