When to photograph NGC 2477
NGC 2477 is an open cluster in Puppis, 19′ across at magnitude 5.8. Also listed as C 71.
When to photograph it
From 45° N it never climbs above 30°. It peaks at 6° 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 December to March, with up to 6.8 hours of astronomical darkness above 30° in February. It reaches 86° at its highest.
Framing
Its long axis is 19′. It fills 35 to 80% of the short side of an APS-C sensor at about 1010 to 2310 mm, and of a full-frame sensor at about 1550 to 3550 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 2477'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 2477
NGC 2477 is 19′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Celestron C8 OTA 2032 mm f/10: fills 70% of an APS-C frame's short side View at High Point Scientific
- Celestron EdgeHD 8 OTA 2032 mm f/10: fills 70% of an APS-C frame's short side View at High Point Scientific
- Sky-Watcher Esprit 120ED 840 mm f/7: fills 29% of an APS-C frame's short side View at High Point Scientific
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