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mantrain

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Everything posted by mantrain

  1. This is really helpful information, however, a google search for duo band filters does not yield much result. Do you have any duos in mind? thank you
  2. Hello, would an Ha 6nm filter be good for the type of camera I have, for moderately light polluted sky? I have a regular LBP but I am thinking about a neb type filter. The one I found used is Astronomic and only $135 but the Triad filter is so much more expensive. But is a Ha filter like 1 /3 as effective as a triad, since that is a singe versus tri-band? Maybe compared to a triad a single band is useless?
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