Thread: M7
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Old 16-06-2010, 10:37 AM
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mental4astro (Alexander)
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Join Date: Jun 2008
Location: sydney, australia
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Stunning amount of detail. Cripes, one of the dust features immediately to the right of the centre of M7 looks like a winged man!

M7 too is one of my favourite clusters. As a youngester, I only could see, and knew of, only the main stars forming this naked eye cluster. Didn't give it too much telescopic attention since until a chart available through IIS showed that M7 is a 4 for the price of one special, with another open cluster (seen here to the bottom right of M7- 'smaller' stars, more densly compacted cluster), a planetary nebula (too small to be seen at this scale), and a faint, small globular cluster (washed out, and probably to small also to make out clearly).

I'm still to find the planetary, but the globular is a little challenging to make out through the glare and confusion of all the bright main cluster stars.

Not doing imaging, I do have a question about the iso speed selected. Of cause this ain't film, but how would a slower speed setting affect the picture, other than making for a slower exposure. I wonder if the speed settings would not affect the colour rendition of the camera somehow. Might there be a colour imbalance occuring at this iso setting somewhere in the hardware?

Alex.
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