geoffhealey56
Collinder 135
Variable beauty in the constellation of Puppis.
Collinder 135 is a bright, beautiful but not often studied open cluster. It consists of six stars brighter than 6th magnitude, and a widespread population of fainter stars. It contains 3 variable stars. The background is quite rich in Hydrogen and lies in a much wider colourful star-field.
The main member is Pi Puppis, a red supergiant long-period variable star about 12 times the size of our sun. The star has the traditional name Ahadi, which is derived from Arabic for "having much promise"
The other 2 variable stars lie around the 4 o’clock position. The left is NV Puppis a blue magnitude 4.67 Gamma Cassiopeiae variable and to the right of that is NW Puppis also blue and a magnitude 5.1 Beta Cephei variable.
Interrupted by passing clouds I captured 39 x 180sec RGB and 12 x 600 sec Ha. Total integration of 3.95 hours.
Astroworx 250mm F4 Truss Newtonian, QHY 268M cmos camera, TS Wynne 3” coma corrector, Optolong HaRGB filters. Captured with Voyager and processed with Pixinsight.
Collinder 135
Variable beauty in the constellation of Puppis.
Collinder 135 is a bright, beautiful but not often studied open cluster. It consists of six stars brighter than 6th magnitude, and a widespread population of fainter stars. It contains 3 variable stars. The background is quite rich in Hydrogen and lies in a much wider colourful star-field.
The main member is Pi Puppis, a red supergiant long-period variable star about 12 times the size of our sun. The star has the traditional name Ahadi, which is derived from Arabic for "having much promise"
The other 2 variable stars lie around the 4 o’clock position. The left is NV Puppis a blue magnitude 4.67 Gamma Cassiopeiae variable and to the right of that is NW Puppis also blue and a magnitude 5.1 Beta Cephei variable.
Interrupted by passing clouds I captured 39 x 180sec RGB and 12 x 600 sec Ha. Total integration of 3.95 hours.
Astroworx 250mm F4 Truss Newtonian, QHY 268M cmos camera, TS Wynne 3” coma corrector, Optolong HaRGB filters. Captured with Voyager and processed with Pixinsight.