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Ordering prints
You can easily order high quality prints of any of these images. Find your favourite image and then click the white "BUY PHOTOS" button here to the right.Then you will be able to choose from a selection of sizes and media types.
I also offer a special range of Large Format Posters for sale with some of my best images.
Galaxies
Read MoreNGC 6902 / NGC 6902B / IC 4946 - Galaxy Group in Sagittarius
In the far south-eastern corner of Sagittarius, a constellation otherwise known for its spectacular highlights near the crowded Milky Way centre, lies the very rarely imaged galaxy NGC 6902 and a couple of its neighbours. Despite its beautiful and elegant appearance there is very little information about this galaxy to be found anywhere.
It contains a bright central ring and possibly also an elusive inner bar. The spiral arms are quite faint despite almost 17 hours of exposure, which is indicative of a rather weak population of O type stars. The arms also have a knotted appearance, perhaps due to the presence of brighter HII regions located within them.
The galaxy lies approximately 33 million light years away and was discovered by John Herschel.
A number of other galaxies can be seen scattered across the field of view, including the smaller face-on spiral NGC 6902B to the upper left. At the top of the frame lies edge-on galaxy IC 4649 with some traces of obscuring dust and a hint of a bar structure surrounding its core.
And far in the background countless distant galaxy groupings can be seen as small fuzzy yellowish dots throughout the image.
Image details:
Date: 29th July, 5th, 6th, 7th, 8th and 9th August 2013
Exposure: LRGB: 645:152:122:93 mins, total 16 hours 52 mins @ -30C
Telescope: 10" Serrurier Truss Newtonian f/5
Camera: QSI 683wsg with Lodestar guider
Filters: Astrodon LRGB E-Series Gen 2
Taken from my observatory in Auckland, New Zealand
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