Thousand Oaks Nebular Filter 2" Lp-2 Narrowband

Thousand Oaks
Made in USA

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About Thousand Oaks

Enhance your deep sky viewing with the latest in multi-layer coating technology. Over three years in development. Our filters transmit desired wave-lengths in a very steep slope vs. gentle transition slopes in competitive brands. This means better contrast and overall performance.

LP-2 Narrowband (Blue Cell) For heavily light polluted areas.


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Questions about this item:

ralph g  Whats better to connect a 2in narrowband filter to the bottom of the eyepiece or to the end of the diagona? because the narrowband filter does not screw on the the extream wide angle 2in eyepiece
JOSHUA F  Well if you are going to use several eyepieces during an observing night all with just one filter I would say screw it into the diagonal. This makes it super easy to switch eyepieces and observe especially if you are using parfocal eyepieces. I prefer to screw mine into he bottom of the eyepiece itself because if there are imperfections in the glass, screwing it into the eyepiece gives less room for scattering due to that imperfection but if your optical train is straight then since it is an interference filter not a lens.. it should act the same in either location. Odd that it doesn't fit your eyepiece but that sounds like an eyepiece i'd like to have! ha Clear Skies!
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