skypointer2000
Cosmic Soap Bubble
The night sky is full of strange things:
This is the Bubble Nebula.
The bubble is created by the stellar wind from a massive hot young central star. Energetic radiation from the star ionizes the shell, causing it to glow in the wavelength of H ll.
About six light-years in diameter, the nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William and is located at a distance of 7100 light years in the the constellation Cassiopeia.
Also visible in the same field of view is the open cluster M52. Due to interstellar absorption of light, the distance to M52 is uncertain, with estimates ranging between 3,000 and 7,000 light years.
On the right edge of the image is NGC7538, another H ll nebula, which is home to the biggest yet discovered protostar (a collapsing ball of rotating gas that’s on the way to becoming a star) which is about 300 times the size of the Solar System. The distance to NGC7538 is estimated at around 9100 light years.
Astro modified Canon EOS 6D
William Optics Megrez 88 - 500mm f/5.6 piggybacked on a Celestron NexStar 8 GPS
66 x 90s @ ISO1600 stacked with fitswork
Thanks for all your comments and faves. They are highly appreciated!
Cosmic Soap Bubble
The night sky is full of strange things:
This is the Bubble Nebula.
The bubble is created by the stellar wind from a massive hot young central star. Energetic radiation from the star ionizes the shell, causing it to glow in the wavelength of H ll.
About six light-years in diameter, the nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in 1787 by William and is located at a distance of 7100 light years in the the constellation Cassiopeia.
Also visible in the same field of view is the open cluster M52. Due to interstellar absorption of light, the distance to M52 is uncertain, with estimates ranging between 3,000 and 7,000 light years.
On the right edge of the image is NGC7538, another H ll nebula, which is home to the biggest yet discovered protostar (a collapsing ball of rotating gas that’s on the way to becoming a star) which is about 300 times the size of the Solar System. The distance to NGC7538 is estimated at around 9100 light years.
Astro modified Canon EOS 6D
William Optics Megrez 88 - 500mm f/5.6 piggybacked on a Celestron NexStar 8 GPS
66 x 90s @ ISO1600 stacked with fitswork
Thanks for all your comments and faves. They are highly appreciated!