IDAS NBZ-II Dual Narrowband H-α | O-III Filter Review

[@chrisschur6736]

Hello Cody, Ive been using this filter on my RASA 8 and Samyang 135 f/2 since its introduction and you might want to mention the color balance with this filter and how to correct it. Mostly due to the large amount of OIII, you tend to get an orange cast in images. To work with this, I use channel multipliers of 100% for R, 50% for G, and 25% for B. you then get a beautiful red hydrogen nebula but still with pink high lights. Also, you can just add the B +G separately to get only OIII for enhancing OIII targets. -- Chris

[@martinleondorta]

Hello Cody, another excellent video!!! Finally, for your experience and better performance. What brand of dual filters would you recommend and how many nanometers? For example: The Ascar color Magic, Altair Dual band 6nm or 4nm? I live in the City of Barcelona which could be a Bortle 8/9.. my equipment: APM 130/780 F/6 - ASI2600MC DUO - AM5 Thanks for your good advice in all your excellent videos.

[@scottrk4930]

Hi Cody . Did I hear correctly...no halos ? I was hoping you might post an image showing that . Next time eh ? Cheers .

[@FrankSD76]

Great review! Just ordered one for my C9.25 in Bortle 9. Thanks much.

[@AstroBlender]

Anytime!

[@dumpydalekobservatory]

I've got the original NBZ filter which I used with a RASA 11 & it still performs well so never bothered with UHS filter, although this one may be another one I may purchase at some point, cheers & clear skies

[@DawgcityClev]

The UHS is better than the one you have. I'd upgrade if I were you

[@clownworlddotfart]

How does this compare with the Optolong L-Ultimate filter?

[@AmatureAstronomer]

Nice.