What to image in June with the ZWO Seestar S50

Shortest nights of the year; above about 55° there is no true darkness at all. Globular clusters and planetary nebulae, being small and bright, are the targets for a twilight sky. Cygnus and the Milky Way rise late; the season proper starts next month.

Moon in June 2027: new on 4 Jun, full on 19 Jun. Broadband targets (galaxies, clusters) want the week either side of new; emission nebulae behind a dual-band filter tolerate the rest.

42 targets transit near midnight in June. From a suburban sky the Seestar S50 gets a solid image of 37 of them in under an hour each; 5 need longer, or a darker sky, or several nights. Times below use the recommended filter and 10 s subs.

Solid image with the ZWO Seestar S50, sorted by the Bortle 6 figure. Each link opens the full Bortle 1 to 9 table with sub-length and filter comparisons.
Target	Type	Bortle 4	Bortle 6	Bortle 8
Butterfly ClusterScorpius	Open cluster	5 min30 subs	5 min30 subs	6 min34 subs
Ptolemy's ClusterScorpius	Open cluster	5 min30 subs	5 min30 subs	6 min34 subs
Wild Duck ClusterScutum	Open cluster	5 min30 subs	5 min30 subs	6 min36 subs
M18Sagittarius	Open cluster	5 min30 subs	5 min30 subs	9 min56 subs
M21Sagittarius	Open cluster	5 min30 subs	5 min30 subs	6 min39 subs
M23Sagittarius	Open cluster	5 min30 subs	5 min30 subs	6 min34 subs
M25Sagittarius	Open cluster	5 min30 subs	5 min30 subs	6 min34 subs
M26Scutum	Open cluster	5 min30 subs	5 min30 subs	6 min34 subs
M92Hercules	Globular cluster	5 min30 subs	6 min36 subs	14 min85 subs
M28Sagittarius	Globular cluster	5 min30 subs	6 min38 subs	14 min87 subs
Ring NebulaLyra, dual-band	Planetary nebula	6 min37 subs	7 min42 subs	10 min60 subs
Hercules ClusterHercules	Globular cluster	5 min30 subs	7 min44 subs	18 min107 subs
M62Ophiuchus	Globular cluster	5 min30 subs	8 min50 subs	20 min122 subs
Sagittarius Star CloudSagittarius	Star cloud	5 min31 subs	9 min53 subs	22 min131 subs
M5Serpens	Globular cluster	6 min35 subs	10 min61 subs	25 min153 subs
Cat's Eye NebulaDraco, dual-band	Planetary nebula	9 min53 subs	10 min62 subs	15 min93 subs
Turtle NebulaHercules, dual-band	Planetary nebula	9 min53 subs	10 min62 subs	15 min93 subs
Blinking PlanetaryCygnus, dual-band	Planetary nebula	9 min53 subs	10 min62 subs	15 min93 subs
M80Scorpius	Globular cluster	6 min39 subs	11 min66 subs	26 min159 subs
M22Sagittarius	Globular cluster	7 min42 subs	12 min74 subs	31 min187 subs
M55Sagittarius	Globular cluster	8 min46 subs	14 min83 subs	35 min211 subs
M12Ophiuchus	Globular cluster	8 min48 subs	14 min87 subs	37 min222 subs
M70Sagittarius	Globular cluster	9 min57 subs	16 min99 subs	40 min243 subs
M69Sagittarius	Globular cluster	9 min57 subs	17 min101 subs	42 min254 subs
M71Sagitta	Globular cluster	11 min66 subs	19 min115 subs	47 min282 subs
Lagoon NebulaSagittarius, dual-band	Emission nebula	16 min94 subs	20 min119 subs	34 min205 subs
Dumbbell NebulaVulpecula, dual-band	Planetary nebula	16 min99 subs	20 min121 subs	33 min198 subs
M19Ophiuchus	Globular cluster	11 min68 subs	21 min128 subs	56 min334 subs
M14Ophiuchus	Globular cluster	12 min74 subs	23 min136 subs	59 min352 subs
Omega NebulaSagittarius, dual-band	Emission nebula	18 min110 subs	23 min138 subs	39 min236 subs
Spindle GalaxyDraco	Galaxy	13 min80 subs	24 min142 subs	59 min354 subs
M10Ophiuchus	Globular cluster	14 min86 subs	27 min165 subs	1 h 13 min439 subs
M54Sagittarius	Globular cluster	15 min90 subs	28 min171 subs	1 h 15 min451 subs
M9Ophiuchus	Globular cluster	18 min106 subs	34 min203 subs	1 h 30 min539 subs
M56Lyra	Globular cluster	21 min128 subs	41 min244 subs	1 h 47 min645 subs
Trifid NebulaSagittarius, dual-band	Emission nebula	33 min200 subs	44 min263 subs	1 h 20 min480 subs
M107Ophiuchus	Globular cluster	29 min177 subs	59 min356 subs	2 h 42 min974 subs
Eagle NebulaSerpens, dual-band	Emission nebula	46 min275 subs	1 h 01 min366 subs	1 h 53 min680 subs
M4Scorpius	Globular cluster	36 min217 subs	1 h 14 min446 subs	3 h 26 min1,238 subs
NGC 6781Aquila, dual-band	Planetary nebula	2 h 01 min728 subs	2 h 42 min973 subs	5 h 03 min1,821 subs
Pinwheel GalaxyUrsa Major	Galaxy	2 h 08 min766 subs	4 h 37 min1,661 subs	13 h4,754 subs
Abell 39Hercules, dual-band	Planetary nebula	16 h5,588 subs	22 h7,827 subs	43 h15,562 subs

Other telescopes in June: 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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