What to image in September with the ZWO Seestar S50
Cygnus overhead, Andromeda rising in the east and Pegasus behind it. The North America and Veil pages are the busiest on the site this month for a reason; the dual-band filter and 30 to 60 s subs make them possible from a suburban garden.
Moon in September 2027: new on 30 Sep, full on 15 Sep. Broadband targets (galaxies, clusters) want the week either side of new; emission nebulae behind a dual-band filter tolerate the rest.
41 targets transit near midnight in September. From a suburban sky the Seestar S50 gets a solid image of 18 of them in under an hour each; 23 need longer, or a darker sky, or several nights. Times below use the recommended filter and 10 s subs.
| Target | Type | Bortle 4 | Bortle 6 | Bortle 8 |
|---|---|---|---|---|
| M39Cygnus | Open cluster | 5 min30 subs | 5 min30 subs | 6 min34 subs |
| M52Cassiopeia | Open cluster | 5 min30 subs | 5 min30 subs | 6 min39 subs |
| 47 TucanaeTucana | Globular cluster | 5 min30 subs | 5 min30 subs | 5 min30 subs |
| Owl ClusterCassiopeia | Open cluster | 5 min30 subs | 5 min30 subs | 6 min39 subs |
| NGC 663Cassiopeia | Open cluster | 5 min30 subs | 5 min30 subs | 6 min34 subs |
| Caroline's RoseCassiopeia | Open cluster | 5 min30 subs | 5 min30 subs | 6 min34 subs |
| M29Cygnus | Open cluster | 5 min30 subs | 6 min34 subs | 12 min72 subs |
| NGC 6939Cepheus | Open cluster | 5 min30 subs | 6 min34 subs | 12 min72 subs |
| M103Cassiopeia | Open cluster | 5 min30 subs | 6 min35 subs | 12 min75 subs |
| M15Pegasus | Globular cluster | 5 min33 subs | 10 min58 subs | 24 min144 subs |
| Saturn NebulaAquarius, dual-band | Planetary nebula | 9 min53 subs | 10 min62 subs | 15 min93 subs |
| M2Aquarius | Globular cluster | 6 min36 subs | 10 min63 subs | 26 min156 subs |
| M30Capricornus | Globular cluster | 7 min41 subs | 12 min71 subs | 29 min174 subs |
| M75Sagittarius | Globular cluster | 11 min66 subs | 19 min114 subs | 46 min279 subs |
| M32Andromeda | Galaxy | 12 min70 subs | 20 min123 subs | 51 min309 subs |
| Bow-Tie NebulaCepheus, dual-band | Planetary nebula | 17 min103 subs | 21 min125 subs | 34 min203 subs |
| Sculptor GalaxySculptor | Galaxy | 15 min91 subs | 29 min175 subs | 1 h 18 min468 subs |
| Little DumbbellPerseus, dual-band | Planetary nebula | 26 min157 subs | 33 min196 subs | 55 min330 subs |
| M72Aquarius | Globular cluster | 37 min220 subs | 1 h 11 min429 subs | 3 h 12 min1,150 subs |
| Eastern Veil NebulaCygnus, dual-band | Supernova remnant | 58 min351 subs | 1 h 18 min471 subs | 2 h 27 min884 subs |
| North America NebulaCygnus, dual-band | Emission nebula | 1 h 03 min381 subs | 1 h 25 min512 subs | 2 h 41 min965 subs |
| Andromeda GalaxyAndromeda | Galaxy | 42 min254 subs | 1 h 27 min525 subs | 4 h 04 min1,465 subs |
| Western Veil NebulaCygnus, dual-band | Supernova remnant | 1 h 09 min414 subs | 1 h 33 min557 subs | 2 h 56 min1,054 subs |
| Pacman NebulaCassiopeia, dual-band | Emission nebula | 1 h 15 min449 subs | 1 h 41 min607 subs | 3 h 12 min1,152 subs |
| Ghost of CassiopeiaCassiopeia, dual-band | Emission nebula | 1 h 21 min485 subs | 1 h 48 min649 subs | 3 h 22 min1,214 subs |
| Iris NebulaCepheus | Reflection nebula | 54 min325 subs | 1 h 53 min681 subs | 5 h 19 min1,913 subs |
| Pelican NebulaCygnus, dual-band | Emission nebula | 1 h 28 min530 subs | 2 h720 subs | 3 h 49 min1,375 subs |
| Helix NebulaAquarius, dual-band | Planetary nebula | 1 h 28 min530 subs | 2 h720 subs | 3 h 49 min1,375 subs |
| NGC 7331Pegasus | Galaxy | 1 h 01 min368 subs | 2 h 07 min762 subs | 5 h 53 min2,121 subs |
| Elephant's Trunk NebulaCepheus, dual-band | Emission nebula | 1 h 44 min627 subs | 2 h 22 min855 subs | 4 h 34 min1,642 subs |
| Wizard NebulaCepheus, dual-band | Emission nebula | 1 h 44 min627 subs | 2 h 22 min855 subs | 4 h 34 min1,642 subs |
| Tulip NebulaCygnus, dual-band | Emission nebula | 1 h 44 min627 subs | 2 h 22 min855 subs | 4 h 34 min1,642 subs |
| Triangulum GalaxyTriangulum | Galaxy | 1 h 16 min456 subs | 2 h 42 min971 subs | 7 h 38 min2,751 subs |
| Crescent NebulaCygnus, dual-band | Emission nebula | 2 h 04 min742 subs | 2 h 49 min1,016 subs | 5 h 27 min1,963 subs |
| Bubble NebulaCassiopeia, dual-band | Emission nebula | 2 h 04 min742 subs | 2 h 49 min1,016 subs | 5 h 27 min1,963 subs |
| Cocoon NebulaCygnus, dual-band | Emission nebula | 2 h 10 min783 subs | 2 h 58 min1,068 subs | 5 h 42 min2,053 subs |
| M110Andromeda | Galaxy | 1 h 45 min631 subs | 3 h 46 min1,359 subs | 11 h3,875 subs |
| Cave NebulaCepheus, dual-band | Emission nebula | 2 h 54 min1,043 subs | 4 h1,439 subs | 7 h 48 min2,807 subs |
| Fireworks GalaxyCygnus | Galaxy | 2 h 26 min878 subs | 5 h 15 min1,893 subs | 15 h5,401 subs |
| M74Pisces | Galaxy | 2 h 33 min921 subs | 5 h 30 min1,983 subs | 16 h5,654 subs |
| NGC 6914Cygnus | Reflection nebula | 2 h 51 min1,026 subs | 6 h 04 min2,185 subs | 17 h6,190 subs |
Other telescopes in September: Seestar S50 Pro · Seestar S30 · Seestar S30 Pro · DWARF 3 · DWARF mini · Draco · DWARF II · Vespera II · Vespera Pro · Vespera 3 · Vespera Pro 2 · eQuinox 2 · Odyssey · Origin · Origin Mark II
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