| http://www.w3.org/ns/prov#value | - Typically for a 'deep sky' object such as a nebula or galaxy I will set my DSLR to an ISO of 1600 ( noise is not an issue as we will see later ), my exposure length to 8 minutes and try to capture around 2 hours worth of these 8 minute 'subs' as they are better known.
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