08: NGC6888 – Crescent Nebula (2023)
NGC6888 Crescent nebula is 5000 years away in the constellation of Cygnus. It is about 25 light-years across blown by winds from its central, bright, massive star (Wolf-Rayet star (WR 136)). The oxygen atoms produce the blue-green hue that seems to enshroud the detailed folds and filaments (Ha). The star is shedding its outer envelope in a strong stellar wind and should ultimately go out with a bang in a spectacular supernova explosion.
Bio: Sara Harvey is from Cork and recently won the ‘Out of this World’ category of the DIAS Reach For the Stars astrophotography competition for her image ‘A Galactic Dance’ of M51.
Process: Camera: ZWO ASI2600MC Pro
Mount: Skywatcher Eq6R-Pro
Guidescope: TS optics 60mm & ZWO ASImini120mm
Optolong Lextreme 8hours, -10dC, Gain 100
Stars: 2.3hours no filter
Software: ASIAIR, Astro Pixel Processor, Pixinsight & Photoshop