NGC 752 (Open Cluster)
A large, scattered open cluster in Andromeda, best viewed with binoculars due to its angular size. An attractive collection of stars.
Open cluster in Andromeda. Magnitude 5.7.
Can you see it from Guyana?
From Georgetown (6.8° N) it climbs to 59° above the northern horizon at its highest; from Lethem (3.4° N), to 55° above the northern horizon. It is highest at midnight on the night of 18 Oct, in the middle of its season. The page works out tonight's rise, highest point and set for both towns in Guyana time (UTC-4), and where the Moon is.
What you'll see
- Your eyes: Visible to the eye only from a dark site, as a hazy knot of stars; lost in city skies.
- 10x50 binoculars: Resolves into dozens of stars.
- A small telescope (80 to 100 mm): Dozens to hundreds of stars at low power.
- A camera: Spans about 40% of an APS-C frame at 600 mm (field 2.2° × 1.5°); needs a tracking mount.
How big, how bright, how far
- Size on the sky: 50′, 1.6 Moons across (the Moon is about 31′ wide).
- Brightness: magnitude 5.7. Fainter than Georgetown's faintest stars (4.3) but brighter than Lethem's (6.0).
- Distance: 1,410 light-years. The light reaching your eye left it about 1,400 years ago, around the year 630.
What it is made of
- Type
- Open cluster
- Distance
- Approx. 1,410 Lightyears
- True size
- Approx. 21 Lightyears across
- Age
- about 1.4 billion years (range 930 million years to 2.3 billion years)
- Notable
- Old and near: about 1.4 billion years at 1,410 light-years.
More deep-sky objects: Alpha Persei Cluster (Melotte 20) · Double Cluster (NGC 869 & NGC 884) · NGC 457 (ET Cluster / Owl Cluster) · M103 (Open Cluster) · Pleiades (M45) · NGC 7789 (Caroline's Rose / White Rose Cluster)