trevorw 10 Report post Posted April 25, 2012 Two Southern sky open clusters. Hope you like Target: NGC 6025 Open Cluster (= Lacaille III.10 = Dunlop 304 = Melotte 139 = Collinder 296), type 'd', in Triangulum Australe Lambda Circinis 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 Right Ascension 16 : 03.7 (h:m) Declination -60 : 30 (deg:m) Distance 2.7 (kly) Visual Brightness 5.1 (mag) Apparent Dimension 12 (arc min) Discovered by Nicholas Louis de Lacaille on March 5, 1752. The considerable southern open cluster NGC 6025 was discovered by Nicholas Louis de Lacaille in 1751-1752 from South Africa. About 30 stars of 7th mag and fainter belong to this group. It lies at the boundary to the constellation Norma and has a distance of over 2000 lightyears. Target: NGC 5460 Open Cluster 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 Position (epoch J2000) Constellation Centaurus Ra 14:07:27.7 Dec -48:20:33 Apparent mag. 5.6 Size 35 ' Class I 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." Share this post Link to post Share on other sites
Radar 656 Report post Posted April 26, 2012 Lovely sharp uncluttered clusters there mate. Ray Share this post Link to post Share on other sites
poppasmurf 377 Report post Posted April 27, 2012 Gorgeous Trev, keep up the great shots mate. Cheers Shane Share this post Link to post Share on other sites
trevorw 10 Report post Posted April 30, 2012 Thanks Shane cheers and clear skies Share this post Link to post Share on other sites
