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Great images Jo, you are a real inspiration to total novices such as me.
I take it for a 4" refractor, I would have to pretty much go 2 minutes for each sub to get the same amount of light onm the sensor? Just a guess - hard to compare the different types of scopes with different apertures and f stops.
Bruce.
Last edited by BruceG; 07-02-2014 at 12:13 PM.
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