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You're welcome LostInSp_ce.
Martin, As the weather is warming up now, noise becomes more prominent
when using a DSLR, so as you are going to use the 8" I would plump for 180 sec subs, but as many of them as you can get, the more the merrier. Did you
follow Cometcatcher [Dunk] when he started his short sub adventures with
his Newt? He produced great images by stacking huge numbers of short
subs [hundreds] using a DSLR, before moving on to a dedicated astro cam.
I would wait for lower ambient temps before taking longer subs to get
at the much fainter portions of the Helix.
Nothing better to do, so I'll post a few more random images for you, all
taken using slight variations on my usual gear and routine.
Here's M20 and M8
raymo
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