| Object: M54 (NGC 6715) | Date: 2018 July 16 |
| Type: Globular cluster | |
| Constellation: Sagittarius | Time & altitude: 23.40 UT 8º |
| Catalogue data: | Seeing (5 high): 2/5 |
| R.A: 18h 55m | Transparency (5 high): 4/5 |
| Dec: -30º 29 | Telescope: 0.5m f4.1 Dob. |
| Magnitude 7.7 | Eyepiece 17mm Ethos x120 |
| Size (mins) 9 | Filters: None |
|
Notes: At minus 30° declination and just 8° altitude I can do little more than say I’ve seen the object. The cluster has a brighter core than either M69 or M70. Checking my sketch with Megastar, the faintest star I have recorded is 12.0m and the perceived diameter is no more than 2 arc minutes. |
|