SkyViking
19-06-2012, 09:31 PM
Hi All,
With my new larger chip I am finally able to give some of the beautiful extended nebulae some justice, so here is my take on NGC 6188 and NGC 6193 in Ara. This is 9 hrs and 25 mins of LRGB, which also highlights just how bright the massive giant stars at the centre of NGC 6193 are.
Main image is here: http://www.pbase.com/rolfolsen/image/144166552/original
Link to full resolution image (3MB): http://www.pbase.com/rolfolsen/image/144166554/original
I couldn't decide how to best present this wonderful piece of sky so I also created a gallery with a couple of different views here: http://www.pbase.com/rolfolsen/ngc6188
Image details:
Date: 12th, 13th and 14th June 2012
Exposure: LRGB 250:105:105:105m, total 9hrs 25mins @ -30C
Telescope: 10" Serrurier Truss Newtonian
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand
About the image:
NGC 6188 is a large emission nebula located some 4000 light years distant in the Southern constellation Ara. This giant molecular cloud is being illuminated by the young star cluster NGC 6193 which in this image appears in the centre almost as if suspended in front of a blanket of nebulousity littered with thousands of other dimmer stars in a multitude of colours.
At the centre of this cluster lies an intensely bright pair of stars; the O-type giants HD 150135 and HD 150136. The latter is in fact itself an extremely close binary with a confirmed third component in an outer eccentric orbit of between 2950 and 5500 days. This triple star system is one of the most massive in our galaxy with the three components containing 64, 40 and 35 solar masses respectively. The cluster is very young, not older than 3 million years, and the intense radiation from the massive stars is slowly eroding the surrounding gas and dust away, sculpting it into the striking forms seen in this image. Within these clouds new stars are currently being born and in places some have already begun to light up the nebula from within.
I have attached down-sampled versions here, but for the best view I recommend the high res versions via the links above.
Hope you enjoy it. Comments and critique is welcome as always.
Regards,
Rolf
With my new larger chip I am finally able to give some of the beautiful extended nebulae some justice, so here is my take on NGC 6188 and NGC 6193 in Ara. This is 9 hrs and 25 mins of LRGB, which also highlights just how bright the massive giant stars at the centre of NGC 6193 are.
Main image is here: http://www.pbase.com/rolfolsen/image/144166552/original
Link to full resolution image (3MB): http://www.pbase.com/rolfolsen/image/144166554/original
I couldn't decide how to best present this wonderful piece of sky so I also created a gallery with a couple of different views here: http://www.pbase.com/rolfolsen/ngc6188
Image details:
Date: 12th, 13th and 14th June 2012
Exposure: LRGB 250:105:105:105m, total 9hrs 25mins @ -30C
Telescope: 10" Serrurier Truss Newtonian
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand
About the image:
NGC 6188 is a large emission nebula located some 4000 light years distant in the Southern constellation Ara. This giant molecular cloud is being illuminated by the young star cluster NGC 6193 which in this image appears in the centre almost as if suspended in front of a blanket of nebulousity littered with thousands of other dimmer stars in a multitude of colours.
At the centre of this cluster lies an intensely bright pair of stars; the O-type giants HD 150135 and HD 150136. The latter is in fact itself an extremely close binary with a confirmed third component in an outer eccentric orbit of between 2950 and 5500 days. This triple star system is one of the most massive in our galaxy with the three components containing 64, 40 and 35 solar masses respectively. The cluster is very young, not older than 3 million years, and the intense radiation from the massive stars is slowly eroding the surrounding gas and dust away, sculpting it into the striking forms seen in this image. Within these clouds new stars are currently being born and in places some have already begun to light up the nebula from within.
I have attached down-sampled versions here, but for the best view I recommend the high res versions via the links above.
Hope you enjoy it. Comments and critique is welcome as always.
Regards,
Rolf