When to photograph NGC 6934
NGC 6934 is a globular cluster in Delphinus, 5′ across at magnitude 9.8. Also listed as C 47.
When to photograph it
From 45° N the best months are August and September, with up to 5.5 hours of astronomical darkness above 30° in August. It reaches 52° at its highest.
From 35° S the best months are June to August, with up to 6.0 hours of astronomical darkness above 30° in July. It reaches 48° at its highest.
Framing
Its long axis is 5′. It fills 35 to 80% of the short side of an APS-C sensor at about 3480 to 7950 mm, and of a full-frame sensor at about 5350 to 12220 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 NGC 6934'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 6934
NGC 6934 is only 5.4′ across, so it stays small in any amateur telescope. The longest focal length gives it the most pixels.
- Celestron C8 OTA 2032 mm f/10: fills 20% of an APS-C frame's short side View at High Point Scientific
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