| Comet | C/2015 F3 (SWAN) |
|---|---|
| User | AHale |
| User`s name | Alan Hale |
| Observation's time (UT) | 2015-04-22 03:21:00 |
| Tool | 41-cm reflector |
| Observation's place | Cloudcroft |
| Magnitude | 12.6 |
| Comparison stars source | NH - North Polar Sequence (publ. by Henden and Kaitchuck, 1982) |
| Method | S - Sidgwick`s method |
| Coma diameter(') | Not set |
| Tail's length | Not set |
| Condensation | |
| Positional angle of tail | Not set |
| Bortl's scale | Not set |
| Aperture | 40.64 cm |
| Focal length (mm) | 1828.8 |
| Type of tool | L - Newtonian reflector |
| Magnification | 70.3 |
| Field of view (°) | 0 |
| SQM-L in zenith | |
| Light pollution zone | Blue |
| Lm | Not set |
| Comment | Even in the 41-cm telescope it was a very vague, diffuse, and barely detectable "presence." We have had a lot of clouds over the past few days — it even snowed in Cloudcroft Sunday! -- but it might be clear tomorrow morning, and it is on my agenda to attempt. |
| Morris Format | 2015 Apr 22.14 UT: m1=12.6 ...40.64-cm L (70.3x) ...Alan Hale (Cloudcroft, U.S.A.) |
