When to photograph IC 1318 (Sadr region)
IC 1318, the Sadr region, is a * in Cygnus, 10′ across at magnitude 2.2.
When to photograph it
From 45° N the best months are August to October, with up to 6.5 hours of astronomical darkness above 30° in September. It reaches 85° at its highest.
From 35° S it never climbs above 30°. It peaks at 15° when it crosses the meridian, low enough that haze and light pollution soften it. It is possible with a clear northern horizon, but hard.
Framing
Its long axis is 10′. It fills 35 to 80% of the short side of an APS-C sensor at about 1880 to 4290 mm, and of a full-frame sensor at about 2890 to 6600 mm.
Filters and the moon
Clusters are broadband targets, but bright ones tolerate some moonlight and light pollution. Short subs keep the brightest stars from clipping. The dark sky calendar shows which nights this month are moon-free where you are.
Plan it for tonight
Dates and times depend on your exact location. The imaging planner shows IC 1318's altitude through tonight, its transit time and its distance from the moon. For sub length, use the exposure calculator.
Nearby targets
- M 29 1.8° away
- NGC 6914 2.3° away
- NGC 6888 Crescent Nebula 2.7° away
- IC 5070 Pelican Nebula 6.7° away
- NGC 7000 North America Nebula 8.1° away
- NGC 6960 Western Veil (Witch's Broom) 10.8° away
Gear that suits IC 1318
IC 1318 is 10′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Celestron C8 OTA 2032 mm f/10: fills 38% of an APS-C frame's short side View at High Point Scientific
- Celestron EdgeHD 8 OTA 2032 mm f/10: fills 38% of an APS-C frame's short side View at High Point Scientific
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