pluton Posted April 5, 2015 Share Posted April 5, 2015 Hello.Anyone know the etalon size of solar telescope like Lunt 35,Lunt 50, and PST 40?ThanksPaul Link to comment Share on other sites More sharing options...
michael.h.f.wilkinson Posted April 5, 2015 Share Posted April 5, 2015 The LS35 has a 35mm etalon, the PST has one of 20mm, I gather. Not sure about the LS50, but I have heard figures of 30-35mm Link to comment Share on other sites More sharing options...
Merlin66 Posted April 6, 2015 Share Posted April 6, 2015 The Lunt 50 internal etalon is around 28mm.The SM40 has a full aperture (40mm) etalon and SM60II internal etalons are around 28mm. Link to comment Share on other sites More sharing options...
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