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Ethos and Filters

Started by pmesquita, 04/26/2009 02:01PM
Posted 04/26/2009 02:01PM Opening Post
One simple question that doesn't have an answer on the Televue site:

On a 6,8,10,13mm 1.25"/2" Ethos EP... can I use a 2" UHC or OxigenIII filter? Or do I have to use a 1.25" filter?

Thanks and cheers

Paulo Mesquita

The only thing better then a clear sky is a a clear soul.
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18" f4.4 Truss Dob w/Argonavis & Astrocrumb Filterslide
C11 CF XLT Fastar + iOptron MT Pro Mount
Lunt Ls60BF1200PTCF + iOptron CUBE G + Stellarvue tripod
Helios Quantum 6 20/26/32x88 giant binoculars on photo mount
56mm TV Plossl + 40mm Meade 4000 SWA + 31mm T5 Nagler - 21mm Ethos - 13mm Ethos TV Paracorr + 2x 18mm Radians + 2x 18mm Cemax + Dioptrx
2" Astronomik OIII - 2" NPB UHC - 2" Lumicon H-Beta - 2" Baader Moon&SkyGlow
2" Glatter
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Posted 04/26/2009 02:34PM | Edited 04/26/2009 02:35PM #1
Hi Paulo,

You can only use 1.25" filters. If you really think about it, how would you screw on a 2" filter to the 1.25/2 Etha? I have the 13mm Ethos, and actually traded away a narrowband 2" filter for a couple 1.25 Lumicon filters to use with my Ethos, which is my ep of choice almost all the time now.

But Shawn is right. If you really want to use the 2" filters, get the skirt as an accy.