120mm Daystar or Baader ERF
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- Location: Walden NY
120mm Daystar or Baader ERF
Looking to purchase Daystar or Baader 120mm front mounted ERF.
Re: 120mm Daystar or Baader ERF
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"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
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