Ray
I've started on the Helix Neb following your advice. So far I've got 90min of 1.5min subs. Its starting to look good, actually better than the 3hr of 6min subs I did a week ago.
So thanks for the advice about sub lengths. I'll get some more on it next month before putting it up for public comment ...
Looks like Helix needs a lot of data to bring any detail - well at least in my hands it does.
Chris
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