M14
NGC 6402 · Globular cluster in Ophiuchus
- Magnitude
- 7.6
- Size
- 11′
- Effective surface brightness
- 21.2 mag/arcsec²
- Best months
- May, Jun, Jul
- Declination
- -3°
- Filter
- None (broadband target)
A fainter, more distant globular in Ophiuchus. Takes longer than its neighbours to resolve.
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 | 26% | 10 min63 subs | 15 min92 subs | 37 min221 subs |
| ZWO Seestar S50 Pro10 s subs | 13% | 11 min69 subs | 17 min101 subs | 40 min240 subs |
| ZWO Seestar S3010 s subs | 15% | 11 min69 subs | 16 min98 subs | 38 min227 subs |
| ZWO Seestar S30 Pro10 s subs | 8% | 12 min74 subs | 18 min107 subs | 42 min254 subs |
| DwarfLab DWARF 315 s subs | 11% | 14 min57 subs | 22 min87 subs | 55 min220 subs |
| DwarfLab DWARF mini15 s subs | 15% | 10 min42 subs | 15 min61 subs | 37 min147 subs |
| DwarfLab Draco30 s subs | 15% | 15 min30 subs | 15 min30 subs | 30 min61 subs |
| DwarfLab DWARF II15 s subs | 10% | 42 min167 subs | 55 min222 subs | 1 h 55 min460 subs |
| Vaonis Vespera II10 s subs | 13% | 10 min63 subs | 15 min92 subs | 37 min221 subs |
| Vaonis Vespera Pro10 s subs | 11% | 24 min147 subs | 35 min209 subs | 1 h 20 min480 subs |
| Vaonis Vespera 310 s subs | 13% | 10 min59 subs | 15 min88 subs | 35 min211 subs |
| Vaonis Vespera Pro 210 s subs | 11% | 23 min140 subs | 33 min199 subs | 1 h 16 min459 subs |
| Unistellar eQuinox 24 s subs | 32% | 12 min183 subs | 15 min229 subs | 29 min429 subs |
| Unistellar Odyssey4 s subs | 33% | 1 h 02 min933 subs | 1 h 13 min1,100 subs | 2 h 02 min1,829 subs |
| Celestron Origin10 s subs | 21% | 5 min30 subs | 5 min30 subs | 10 min61 subs |
| Celestron Origin Mark II10 s subs | 25% | 5 min30 subs | 5 min32 subs | 14 min85 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 M14 with the ZWO Seestar S50
- How long to image the M14 with the ZWO Seestar S50 Pro
- How long to image the M14 with the ZWO Seestar S30
- How long to image the M14 with the ZWO Seestar S30 Pro
- How long to image the M14 with the DwarfLab DWARF 3
- How long to image the M14 with the DwarfLab DWARF mini
- How long to image the M14 with the DwarfLab Draco
- How long to image the M14 with the DwarfLab DWARF II
- How long to image the M14 with the Vaonis Vespera II
- How long to image the M14 with the Vaonis Vespera Pro
- How long to image the M14 with the Vaonis Vespera 3
- How long to image the M14 with the Vaonis Vespera Pro 2
- How long to image the M14 with the Unistellar eQuinox 2
- How long to image the M14 with the Unistellar Odyssey
- How long to image the M14 with the Celestron Origin
- How long to image the M14 with the Celestron Origin Mark II