47 Tucanae
NGC 104, Caldwell 106 · Globular cluster in Tucana
- Magnitude
- 4.0
- Size
- 31′
- Effective surface brightness
- 19.8 mag/arcsec²
- Best months
- Sep, Oct, Nov
- Declination
- -72°
- Filter
- None (broadband target)
The second-brightest globular, with a blazing core, next to the Small Magellanic Cloud. Far southern sky only.
Southern hemisphere only.
How long with each smart telescope
| Telescope | In frame | Bortle 3 (rural) | Bortle 5 (suburban) | Bortle 7 (urban edge) |
|---|---|---|---|---|
| ZWO Seestar S5010 s subs | 72% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| ZWO Seestar S50 Pro10 s subs | 37% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| ZWO Seestar S3010 s subs | 43% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| ZWO Seestar S30 Pro10 s subs | 23% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| DwarfLab DWARF 315 s subs | 31% | 8 min30 subs | 8 min30 subs | 8 min30 subs |
| DwarfLab DWARF mini15 s subs | 43% | 8 min30 subs | 8 min30 subs | 8 min30 subs |
| DwarfLab Draco30 s subs | 42% | 15 min30 subs | 15 min30 subs | 15 min30 subs |
| DwarfLab DWARF II15 s subs | 29% | 8 min30 subs | 8 min30 subs | 9 min36 subs |
| Vaonis Vespera II10 s subs | 36% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| Vaonis Vespera Pro10 s subs | 32% | 5 min30 subs | 5 min30 subs | 6 min38 subs |
| Vaonis Vespera 310 s subs | 35% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| Vaonis Vespera Pro 210 s subs | 31% | 5 min30 subs | 5 min30 subs | 6 min36 subs |
| Unistellar eQuinox 24 s subs | Only just | 2 min30 subs | 2 min30 subs | 2 min33 subs |
| Unistellar Odyssey4 s subs | Only just | 5 min80 subs | 6 min90 subs | 9 min134 subs |
| Celestron Origin10 s subs | 61% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| Celestron Origin Mark II10 s subs | 69% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
Imaging the globular cluster
Globular clusters are point sources packed tight, so they come quickly: the core resolves into stars within a handful of minutes on any smart scope. More time deepens the halo and pulls in the faint outer members. Use short subs so the core does not saturate into a white blob, and no filter.
Per-telescope pages
- How long to image the 47 Tucanae with the ZWO Seestar S50
- How long to image the 47 Tucanae with the ZWO Seestar S50 Pro
- How long to image the 47 Tucanae with the ZWO Seestar S30
- How long to image the 47 Tucanae with the ZWO Seestar S30 Pro
- How long to image the 47 Tucanae with the DwarfLab DWARF 3
- How long to image the 47 Tucanae with the DwarfLab DWARF mini
- How long to image the 47 Tucanae with the DwarfLab Draco
- How long to image the 47 Tucanae with the DwarfLab DWARF II
- How long to image the 47 Tucanae with the Vaonis Vespera II
- How long to image the 47 Tucanae with the Vaonis Vespera Pro
- How long to image the 47 Tucanae with the Vaonis Vespera 3
- How long to image the 47 Tucanae with the Vaonis Vespera Pro 2
- How long to image the 47 Tucanae with the Unistellar eQuinox 2
- How long to image the 47 Tucanae with the Unistellar Odyssey
- How long to image the 47 Tucanae with the Celestron Origin
- How long to image the 47 Tucanae with the Celestron Origin Mark II