How Many Subs

What to image in July with the DwarfLab DWARF mini

The Milky Way core is up after midnight: the Lagoon, Trifid, Eagle and Swan nebulae, low in the south from Britain and northern Europe but spectacular from the southern US and the southern hemisphere. Cygnus and the Veil are high by the small hours. Dual-band filter on for all of them.

Moon in July 2027: new on 4 Jul, full on 18 Jul. Broadband targets (galaxies, clusters) want the week either side of new; emission nebulae behind a dual-band filter tolerate the rest.

59 targets transit near midnight in July. From a suburban sky the DWARF mini gets a solid image of 43 of them in under an hour each; 16 need longer, or a darker sky, or several nights. Times below use the recommended filter and 15 s subs.

Solid image with the DwarfLab DWARF mini, sorted by the Bortle 6 figure. Each link opens the full Bortle 1 to 9 table with sub-length and filter comparisons.
TargetTypeBortle 4Bortle 6Bortle 8
Butterfly ClusterScorpiusOpen cluster8 min30 subs8 min30 subs8 min30 subs
Ptolemy's ClusterScorpiusOpen cluster8 min30 subs8 min30 subs8 min30 subs
Wild Duck ClusterScutumOpen cluster8 min30 subs8 min30 subs8 min30 subs
Hercules ClusterHerculesGlobular cluster8 min30 subs8 min30 subs18 min72 subs
M18SagittariusOpen cluster8 min30 subs8 min30 subs9 min37 subs
M21SagittariusOpen cluster8 min30 subs8 min30 subs8 min30 subs
M23SagittariusOpen cluster8 min30 subs8 min30 subs8 min30 subs
M25SagittariusOpen cluster8 min30 subs8 min30 subs8 min30 subs
M26ScutumOpen cluster8 min30 subs8 min30 subs8 min30 subs
M28SagittariusGlobular cluster8 min30 subs8 min30 subs14 min58 subs
M29CygnusOpen cluster8 min30 subs8 min30 subs12 min48 subs
M39CygnusOpen cluster8 min30 subs8 min30 subs8 min30 subs
Ring NebulaLyra, dual-bandPlanetary nebula8 min30 subs8 min30 subs10 min40 subs
M92HerculesGlobular cluster8 min30 subs8 min30 subs14 min57 subs
NGC 6939CepheusOpen cluster8 min30 subs8 min30 subs12 min48 subs
M62OphiuchusGlobular cluster8 min30 subs8 min33 subs20 min81 subs
Sagittarius Star CloudSagittariusStar cloud8 min30 subs9 min36 subs22 min87 subs
M15PegasusGlobular cluster8 min30 subs10 min39 subs24 min96 subs
Cat's Eye NebulaDraco, dual-bandPlanetary nebula9 min35 subs10 min41 subs15 min62 subs
Turtle NebulaHercules, dual-bandPlanetary nebula9 min35 subs10 min41 subs15 min62 subs
Blinking PlanetaryCygnus, dual-bandPlanetary nebula9 min35 subs10 min41 subs15 min62 subs
Saturn NebulaAquarius, dual-bandPlanetary nebula9 min35 subs10 min41 subs15 min62 subs
M2AquariusGlobular cluster8 min30 subs10 min42 subs26 min104 subs
M80ScorpiusGlobular cluster8 min30 subs11 min44 subs26 min106 subs
M30CapricornusGlobular cluster8 min30 subs12 min47 subs29 min116 subs
M22SagittariusGlobular cluster8 min30 subs12 min50 subs31 min125 subs
M55SagittariusGlobular cluster8 min31 subs14 min55 subs35 min141 subs
M12OphiuchusGlobular cluster8 min32 subs14 min58 subs37 min148 subs
M70SagittariusGlobular cluster9 min38 subs16 min66 subs40 min162 subs
M69SagittariusGlobular cluster9 min38 subs17 min67 subs42 min169 subs
M75SagittariusGlobular cluster11 min44 subs19 min76 subs46 min186 subs
M71SagittaGlobular cluster11 min44 subs19 min76 subs47 min188 subs
Lagoon NebulaSagittarius, dual-bandEmission nebula15 min62 subs19 min78 subs34 min136 subs
Dumbbell NebulaVulpecula, dual-bandPlanetary nebula16 min65 subs20 min80 subs33 min132 subs
M19OphiuchusGlobular cluster11 min45 subs21 min85 subs56 min223 subs
M14OphiuchusGlobular cluster12 min49 subs23 min91 subs58 min234 subs
Omega NebulaSagittarius, dual-bandEmission nebula18 min72 subs23 min91 subs39 min157 subs
M10OphiuchusGlobular cluster14 min57 subs27 min110 subs1 h 13 min292 subs
M54SagittariusGlobular cluster15 min60 subs28 min114 subs1 h 15 min300 subs
M9OphiuchusGlobular cluster17 min70 subs34 min135 subs1 h 30 min359 subs
M56LyraGlobular cluster21 min85 subs40 min162 subs1 h 47 min429 subs
Trifid NebulaSagittarius, dual-bandEmission nebula33 min131 subs43 min173 subs1 h 19 min318 subs
M107OphiuchusGlobular cluster29 min117 subs59 min236 subs2 h 42 min649 subs
Eagle NebulaSerpens, dual-bandEmission nebula45 min180 subs1 h241 subs1 h 52 min450 subs
M72AquariusGlobular cluster36 min146 subs1 h 11 min285 subs3 h 11 min766 subs
M4ScorpiusGlobular cluster36 min144 subs1 h 14 min296 subs3 h 26 min824 subs
Eastern Veil NebulaCygnus, dual-bandSupernova remnant57 min230 subs1 h 17 min309 subs2 h 26 min585 subs
North America NebulaCygnus, dual-bandEmission nebula1 h 02 min249 subs1 h 24 min336 subs2 h 40 min639 subs
Western Veil NebulaCygnus, dual-bandSupernova remnant1 h 07 min270 subs1 h 31 min366 subs2 h 54 min697 subs
Iris NebulaCepheusReflection nebula54 min215 subs1 h 53 min452 subs5 h 18 min1,273 subs
Pelican NebulaCygnus, dual-bandEmission nebula1 h 26 min346 subs1 h 58 min473 subs3 h 47 min909 subs
Elephant's Trunk NebulaCepheus, dual-bandEmission nebula1 h 42 min409 subs2 h 20 min561 subs4 h 31 min1,086 subs
Tulip NebulaCygnus, dual-bandEmission nebula1 h 42 min409 subs2 h 20 min561 subs4 h 31 min1,086 subs
NGC 6781Aquila, dual-bandPlanetary nebula1 h 59 min476 subs2 h 40 min639 subs5 h 01 min1,205 subs
Crescent NebulaCygnus, dual-bandEmission nebula2 h 01 min484 subs2 h 47 min667 subs5 h 24 min1,298 subs
Cocoon NebulaCygnus, dual-bandEmission nebula2 h 08 min511 subs2 h 55 min701 subs5 h 39 min1,357 subs
Fireworks GalaxyCygnusGalaxy2 h 25 min579 subs5 h 14 min1,256 subs15 h3,595 subs
NGC 6914CygnusReflection nebula2 h 49 min677 subs6 h 02 min1,450 subs17 h4,120 subs
Abell 39Hercules, dual-bandPlanetary nebula15 h3,637 subs21 h5,130 subs43 h10,287 subs

Other telescopes in July: Seestar S50 · Seestar S50 Pro · Seestar S30 · Seestar S30 Pro · DWARF 3 · Draco · DWARF II · Vespera II · Vespera Pro · Vespera 3 · Vespera Pro 2 · eQuinox 2 · Odyssey · Origin · Origin Mark II

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