When to photograph NGC 6729
NGC 6729 is a nebula in Corona Australis, 25′ x 20′ across. Also listed as C 68.
When to photograph it
From 45° N it never climbs above 30°. It peaks at 8° when it crosses the meridian, low enough that haze and light pollution soften it. It is possible with a clear southern horizon, but hard.
From 35° S the best months are June and July, with up to 10.0 hours of astronomical darkness above 30° in July. It reaches 88° at its highest.
Framing
Its long axis is 25′. It fills 35 to 80% of the short side of an APS-C sensor at about 750 to 1720 mm, and of a full-frame sensor at about 1160 to 2640 mm.
Filters and the moon
Reflection and dark nebulae are broadband targets. They need dark, moon-free nights and plenty of integration time. 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 NGC 6729's altitude through tonight, its transit time and its distance from the moon. For sub length, use the exposure calculator.
Nearby targets
Gear that suits NGC 6729
NGC 6729 is 25′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Sky-Watcher Esprit 120ED 840 mm f/7: fills 39% of an APS-C frame's short side View at High Point Scientific
- Sky-Watcher Quattro 200P 800 mm f/4: fills 37% of an APS-C frame's short side View at High Point Scientific
- Sky-Watcher 130PDS 650 mm f/5: fills 30% of an APS-C frame's short side View at High Point Scientific
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