Scope: GSO 8”(200mm) F9 CF RC
Mount : Losmandy G11-G2
Camera: QHY 8 OSC CCD
Exposures: 6 frames 10 minutes per frame
Date: 23/4/2012
Time: 7:00 – 11:00pm
Seeing : Good
Conditions: Cool night no moon usual suburban LP
Guiding: Orion SSAG on 72mm WO Mergz using PHD
Stacking: DSS
Processing: PS CS 3
•ESO 221-SC024 • Cr 280 •Mel 123•OCL 925•Lund 653 Position (epoch J2000) Constellation Centaurus
Ra 14:07:27.7 Dec -48:20:33 Apparent mag.5.6 Size 35 ' ClassI 3 m Historical observations
Dunlop, James (1827)
James Dunlop discovered this open cluster from Paramatta, New South Wales, and included it as No. 431 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "a curiously curved line of small stars, of nearly equal magnitudes; two stars of 7th magnitude following."
