Ngc 6164 is located in the constellation Norma, right at the border with Ara. To the left is the much larger nebulosity of Ngc 6188. The star at the center of this bipolar nebula cloud Ngc6164, is called HD 148937. This star is 40 times more massive than our own sun, at about three to four millions years of age, well past the middle of it's life span. Stars this massive only live to around 6 million years of age. It will most likely that it will go super nova at the end of its lifespan. Like other O-type stars, HD148937 is heating the surrounding clouds of gas with ultraviolet radiation, causing them to glow in visible light, illuminating swirls and caverns in the cloud, created from the star. Some astronomers believe the cloud of material is ejecta from the star as it spins on its axis. It's also probable that surrounding magnetic fields about the star may have a hand in creating the bubble like filament/ shock waves. The nebula measures about 4.3 L.ys across and around 4200 light years away.
|Date||Lum-9 & 10/ 5/ 08 & rgb 10/ 5/ 08|
|Location||BayTop Observatory- Streaky Bay South Australia|
|Instrument||Home built 10" Newtonian (Bob Royce primary) and an Antares 1/20th wave secondary with MPCC coma corrector. System working @ native f4/ 1016 FL 1.35 arcsec/pixel- FOV 23.3x29.4|
|Mount||Celestron CI700 controlled by a Mel Bartels Goto Control System with Vexta PK264m-01b motors with a pulley and belt system|
|Camera (CCD)||Starlight Xpress HX916 monochrome CCD with Atik manual filter wheel.|
|Exposures||L: 90' R:27' G:27' B:27' (3' sub exposures all unbinned) No dark frames removed.|
|Guiding||Orion 80ED refractor F7.5 with a Starlight Xpress HX516 CCD. Mounted via a side by side accessory plate.|
|Filters||Astronomik typeII clr RGB filter set|
Conditions- Taking lum and rgb channels seeing was poor to begin with until was able to get over the poor atmospherics at lower altitudes. Seeing then became average.