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Hi Tony , the biggest problem you will find with the 20DA is getting focus, don't use the LCD screen it can cause heat problems on the chip. just take a 10sec image of a bright star,adjust focus and repeat till you have it right, it doesn't take long.
capture in Jpeg format.
ISO 800
and try 3min shots and stack them, with the light pollution you have a 10min shot will wash out very quickly.
For the Lagoon you will need a F6.3 reducer and even then you may not fit it all in.
I would suggest you try the M20 first, it does fit with a F6.3.
Hows the EQ6 doing is it any better?
cheers
David.
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