Dusty Jewels of the Southern Crown QHY8
NGC6726 and surrounds in Corona Australis. Imaged in the early hours of Saturday morning, just before moonrise, using a borrowed Zenithstar 105. This region fascinates, but has eluded me in the past, the dust clouds are normally lost in skyglow.
The blue nebulosity around the central stars quickly fades to clouds of dust, visible as brown columns against a dark sky background. The globular cluster balances the image nicely.
I'm still learning to use the QHY8, this time around I've reduced the gain and gone for longer subs. This appears to work, the lower gain results in better dynamic range. I'd like to spend more time imaging this region, on a clear night 120 minutes or more (8x900s) should bring out more detail in the dust clouds.
Mount: EQ6
Guider: ST80, webcam, GuideDog
Imager: WO Zenithstar 105, QHY8 at prime focus
2 x 900s, 2x600s, 1x300s median stacked using DSS, no darks.
Levels, curves Photoshop.
Captured using Nebulosity, Gain 20 (31%), offset 116.
Cheers,
Rob
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