Puppis A Supernova Remnant by Don Goldman (APOD Aug 28, 2015)
Mount: PlaneWave Ascension A200h
Oag: Astrodon MonsterMOAG
Observatory Site: iTelescope.net, Siding Spring, NSW, Australia
Filters: Astrodon 3nm OIII, 5nm H-a/SII, Gen 2 RGB
Cartwheel Galaxy by Damian Peach
CDK20″ with FLI-PL6303E camera. LRGB. L: 60mins. RGB: 5mins.
Located in the southern constellation Sculptor, this collisional ring galaxy was likely formed from a collision between two galaxies in the distant past. The blue ring of material is a region of active star formation dominated by hot blue stars. This ring of material is 150,000 light years in diameter which is larger than our own milky way galaxy. The Cartwheel Galaxy is 500 million light years away and glows at 15th magnitude.
47 Tucanae by Damian Peach
CDK20″ @ F4.5. FLI camera. RGB: 45mins.
Possibly the finest globular cluster in the entire sky. Visible to the naked eye alongside the Small Magellanic Cloud, the massive ball of stars is 16,700 light years away from our solar system and is 120 light years in diameter. Unlike Omega Centauri (the skies bright cluster of this type) 47 Tucanae is much denser toward the core giving the cluster a “3D” appearance in the telescope.
Shapley 1 by Damian Peach
CDK700 (28″) @ F6.8. FLI camera. L: 60mins. RGB: 5mins.
Shapley 1 (Sp 1 or PLN 329+2.1) is an annular planetary nebula in the constellation of Norma with a magnitude of +12.6. As viewed from Earth, it is peculiar in that it seems to be a non-bipolar, torus-shaped planetary nebula.Discovered in 1936 by Harlow Shapley, it is approximately 1,000 light years from Earth. At the centre of the nebula is a magnitude 14 white dwarf star.It has an angular diameter of 1.1 arc minutes,which makes it about one-third (.32) of a light year across.
Helix Nebula by Damian Peach
CDK700 (28″) @ F6.8. FLI camera. L: 90mins. RGB: 5mins.
One of the brightest planetary nebulae in the sky. It is located around 700 light years away and spans around 2.5 light years in size. Many background galaxies are visible in the image (which are vastly more distant) including some visible through the nebula itself.
Planetary nebulae such as this one represent the very late stages of low-medium mass stars (such as the Sun.) Indeed the Sun itself will one day create a planetary nebula perhaps similar to the Helix, billions of years from now.
Trifid Nebula (M20) by Damian Peach
CDK700 (28′) @ F6.8. FLI camera. L: 60mins. RGB: 15mins.
This famous object is an unusual combination of an open cluster of stars; an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent ‘gaps’ within the emission nebula that cause the trifurcated appearance) It is located around 5000 light years away.