Telescope: Meade 10” LX200 SCT (Wide Field) @ f/6.3, Orion Atlas EQ-G
Camera: ZWO ASI071MC, Orion Imaging Skyglow Filter
Sensor Temperature: -10C, Gain: 300, Offset: 50
Guide scope: Astro-Tech 60mm, Meade DSI Pro II, PHD
Exposure: 41x120sec saved as FITS, dithered every frame, R.A. only
Darks: 32x120sec saved as FITS
Flats: 32x10sec, LED tracing tablet
Average Light Pollution: Red zone, fair transparency, waning gibbous moon
Lensed Sky Quality Meter: 18.4 mag/arc-sec^2
Stacking: Mean with a 2-sigma clip.
White Balance: Nebulosity Automatic
Software: Nebulosity, Deep Sky Stacker, Photoshop
NGC6229 is the 3rd globular cluster in Hercules along with the much larger and brighter M13 and M92. I found this little gem while star-hopping around Hercules northward towards Draco. Small and faint, NGC6229 is easy to locate once you’ve spotted the two 8th magnitude stars just to the right of the cluster.
The late spring and early summer sky hosts several beautiful globular clusters in a broad swath from Hercules in the north to Scorpio and Sagittarius in the south. It is neat to hop from one to another to appreciate how different they can be from one another.