I have used this filter and specially from 2 "to the fact that, with the Lightbridge, I have a 1.25 gear, which possesses a special thread that receives the filters 2", so you can use them both with the nomal 50.8 mm eyepieces with smaller ones by 31.8 ... so helpful for not spending big bucks in the disparate measures.
The OIII filters may be a very selective filter is compared with the UHC, either l 'uhce (uhcs) and acts as the table below
Used with bright nebulae such as M42, it seems that the image changes and thus have three different views:
NO FILTER, UHCE and OIII ... 3 nebulae seem completely different.
very useful in the search for planetary nebulae, because it cuts a lot compared (including most of the stars), it allows oxygen and a few stars still visible, but leaving intact the signal of a planetary nebula, while less useful for their observation.
say I will never stop going on two, "if the adapter thread ... you do not regret it;)
ciaociao
NO FILTER, UHCE and OIII ... 3 nebulae seem completely different.
very useful in the search for planetary nebulae, because it cuts a lot compared (including most of the stars), it allows oxygen and a few stars still visible, but leaving intact the signal of a planetary nebula, while less useful for their observation.
say I will never stop going on two, "if the adapter thread ... you do not regret it;)
ciaociao
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