M80
NGC 6093 · Globular cluster in Scorpius
- Magnitude
- 7.3
- Size
- 10′
- Effective surface brightness
- 20.7 mag/arcsec²
- Best months
- May, Jun, Jul
- Declination
- -23°
- Filter
- None (broadband target)
A dense little globular between Antares and Graffias. Resolves poorly, but the ball itself is bright.
Reachable from mid-northern latitudes (UK, northern US, central Europe) and from the south.
How long with each smart telescope
| Telescope | In frame | Bortle 3 (rural) | Bortle 5 (suburban) | Bortle 7 (urban edge) |
|---|---|---|---|---|
| ZWO Seestar S5010 s subs | 23% | 6 min34 subs | 8 min47 subs | 17 min102 subs |
| ZWO Seestar S50 Pro10 s subs | 12% | 6 min37 subs | 8 min51 subs | 18 min111 subs |
| ZWO Seestar S3010 s subs | 14% | 6 min37 subs | 8 min49 subs | 17 min105 subs |
| ZWO Seestar S30 Pro10 s subs | 7% | 7 min40 subs | 9 min54 subs | 20 min118 subs |
| DwarfLab DWARF 315 s subs | 10% | 8 min32 subs | 11 min45 subs | 25 min102 subs |
| DwarfLab DWARF mini15 s subs | 14% | 8 min30 subs | 8 min31 subs | 17 min68 subs |
| DwarfLab Draco30 s subs | 13% | 15 min30 subs | 15 min30 subs | 15 min30 subs |
| DwarfLab DWARF II15 s subs | 9% | 21 min85 subs | 27 min109 subs | 53 min212 subs |
| Vaonis Vespera II10 s subs | 12% | 6 min34 subs | 8 min47 subs | 17 min102 subs |
| Vaonis Vespera Pro10 s subs | 10% | 13 min78 subs | 17 min105 subs | 37 min222 subs |
| Vaonis Vespera 310 s subs | 11% | 5 min32 subs | 7 min45 subs | 16 min98 subs |
| Vaonis Vespera Pro 210 s subs | 10% | 12 min74 subs | 17 min100 subs | 35 min212 subs |
| Unistellar eQuinox 24 s subs | 29% | 6 min90 subs | 7 min110 subs | 13 min196 subs |
| Unistellar Odyssey4 s subs | 30% | 29 min441 subs | 34 min514 subs | 55 min829 subs |
| Celestron Origin10 s subs | 20% | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| Celestron Origin Mark II10 s subs | 22% | 5 min30 subs | 5 min30 subs | 7 min40 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 M80 with the ZWO Seestar S50
- How long to image the M80 with the ZWO Seestar S50 Pro
- How long to image the M80 with the ZWO Seestar S30
- How long to image the M80 with the ZWO Seestar S30 Pro
- How long to image the M80 with the DwarfLab DWARF 3
- How long to image the M80 with the DwarfLab DWARF mini
- How long to image the M80 with the DwarfLab Draco
- How long to image the M80 with the DwarfLab DWARF II
- How long to image the M80 with the Vaonis Vespera II
- How long to image the M80 with the Vaonis Vespera Pro
- How long to image the M80 with the Vaonis Vespera 3
- How long to image the M80 with the Vaonis Vespera Pro 2
- How long to image the M80 with the Unistellar eQuinox 2
- How long to image the M80 with the Unistellar Odyssey
- How long to image the M80 with the Celestron Origin
- How long to image the M80 with the Celestron Origin Mark II