When to photograph NGC 752
NGC 752 is an open cluster in Andromeda, 39′ across at magnitude 5.7. Also listed as C 28.
When to photograph it
From 45° N the best months are October and November, with up to 9.8 hours of astronomical darkness above 30° in October. It reaches 83° at its highest.
From 35° S it never climbs above 30°. It peaks at 17° 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 39′. It fills 35 to 80% of the short side of an APS-C sensor at about 480 to 1100 mm, and of a full-frame sensor at about 740 to 1690 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 752's altitude through tonight, its transit time and its distance from the moon. For sub length, use the exposure calculator.
Nearby targets
- NGC 891 6.6° away
- NGC 925 7.4° away
- M 33 Triangulum Galaxy 8.7° away
- M 34 9.8° away
- M 76 Barbell Nebula 14.0° away
- M 32 14.8° away
Gear that suits NGC 752
NGC 752 is 39′ along its long axis. These frame it on an APS-C sensor with room to crop.
- Sky-Watcher 130PDS 650 mm f/5: fills 47% of an APS-C frame's short side View at High Point Scientific
- Askar FRA600 600 mm f/5.6: fills 44% of an APS-C frame's short side View at High Point Scientific
- Sky-Watcher Quattro 200P 800 mm f/4: fills 58% of an APS-C frame's short side View at High Point Scientific
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