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Helix with 8" Edge SCT
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12-11-2018, 02:05 PM
casstony
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Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,494
Thanks for your comments guys. I have an IDAS P2 filter 2"; the trick is getting it into the train on the SCT.
It did occur to me that I could try f/10 on ngc7009 since it's so bright and use shorter exposures to avoid burning out the centre.
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