M3 – Globular Cluster
Messier 3 (M3 or NGC 5272) is a globular cluster of stars in the northern costellation of Canes Venatici.
This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is estimated to be 8 billion years old. It is located at a distance of about 33,900 light years away from Earth.
Messier 3 is located 31.6 Kly above the Galactic plane and roughly 38.8 kly from the center of the Milky Way. It contains 274 known variable stars; by far the highest number found in any globular cluster.
- Costellation: canes Venatici
- AR: 13h 42m 11.62s – DEC: +28° 22′ 38.2″
- Distance: 33.900 ly
- Age: 11.39 Gyl equal to 11.39 billion of yl
- Shooting Details
- Optics: Takahashi FSQ85ED
- Mount: EQ6 Skywatcher
- Camera: QSI 683 WSG-5
- Accessories: Lodestar, USB_Focus V3
- Cooling: -20°C
- Filters: Astrodon Tru-Balance E-Series Gen 2 HaLRGB
- Exposure: RGB bin1 300″ [11x10x9]
- Flat-Dark-Bias: 15-19-201
- Integration: 2.5 h
- Date: Feb 22th, 2018
- Location: Own remote observatory
- SQM-L: 21.10
- Software: PHD2, Voyager, Pixinsight, PS