All posts filed under “Emission nebulae

Emission nebulae

Cassiopeia's Heart

Cassiopeia's Heart

Cassiopeia's heart1)Not to be confused by the heart nebula, a massive star-forming region on the cassiopeia border , the nameless middle star of the conspicuous 'W' in the sky, shows a surprise in this deep image. The big questions of astronomy these days are: what […]

NGC7000

NGC7000

"First light" in my new observatory. The mount was poorly polar aligned - about 1 degree off. Inspired by Mark-Jaap ten Hove's idea 1)http://www.mark-jaap.nl/, deepsky section, image of M31 27-08-2014 using 30s subs of using very small sub-times, I decided to give the North America […]