NGC 6624 (GC)
Globular Cluster in Sagittarius
| R.A. | Dec. | Size | Mag | SB | Cnt.St | Type | Distance | Chart |
|---|---|---|---|---|---|---|---|---|
| 18h 23m 41.3s | -30° 21′ 37.1″ | 2.0′ | 9.1 | 10.4 | VI | GC | -- | -- |
Source: POSS-2 UK Schmidt Red (STScI) | Field: 10′ × 10′
Background
NGC 6624 is a moderately bright globular cluster 26,000 light-years away in Sagittarius, sitting in the outskirts of the Galactic bulge. Notable for hosting a millisecond pulsar (4U 1820-30) at its core.
My Observing Notes
25-cm (Meade 10-inch LX200, The Coffee Grinder): 0.8° south-east of δ Sgr. A brighter core with diffuse halo of unresolved stars. Averted vision begins to pick out some of the brighter halo members, giving the cluster a more granular appearance.(Friday, May 2025)
References
Charts
Ultra-wide view (~25° field)
Wide-field view with Telrad rings (4°, 2°, 0.5°)
Finderscope view (9×50 RACI, ~4.4° TFOV)
Eyepiece view — 35 mm Panoptic on 12-inch f/5 (1.6° TFOV)