Hi Brent I just saw again your videos after a few months. Now I can see why the IDAS NBZ filter has a 12nm band width and works perfectly with the hyperstar C9.25 Edge (V3, f2.3) and at f10 too. After this, I have a question: would a 12nm narrow band regular astronomik filter would perform differently from the 12nm MaxFR filter at f2.3? What about f10 or f7?
The bandwidth and what makes MaxFR special are two different things. Bandwidth is the characteristic of what wavelengths will be transmitted. 12 nm is 12 nm, and they will follow the same transmission trends based on f/ that I presented. MaxFR is about the manufacturing process that Astronomik uses to produce the filter. I would assume it to be the specific materials, thicknesses, layering, and coatings applied to the filter to reduce glare, reflections, and protect the coating.
Thanks. I think the NBZ design is a little different since it’s a flat top transmission so it can reach out the maximum value at different f-ratios. Astronomik seems to have a different approach. In the end, no matter the design, what is important is the performance and these Astronomik seem to be quite good
![Bandwidth choices for narrowband imaging with fast optics [4k]](http://i.ytimg.com/vi/rtFX92dZE_w/mqdefault.jpg)
![Bandwidth choices for narrowband imaging with fast optics [4k]](/img/tr.png)
Hi Brent
I just saw again your videos after a few months. Now I can see why the IDAS NBZ filter has a 12nm band width and works perfectly with the hyperstar C9.25 Edge (V3, f2.3) and at f10 too.
After this, I have a question: would a 12nm narrow band regular astronomik filter would perform differently from the 12nm MaxFR filter at f2.3? What about f10 or f7?
The bandwidth and what makes MaxFR special are two different things.
Bandwidth is the characteristic of what wavelengths will be transmitted. 12 nm is 12 nm, and they will follow the same transmission trends based on f/ that I presented.
MaxFR is about the manufacturing process that Astronomik uses to produce the filter. I would assume it to be the specific materials, thicknesses, layering, and coatings applied to the filter to reduce glare, reflections, and protect the coating.
Thanks.
I think the NBZ design is a little different since it’s a flat top transmission so it can reach out the maximum value at different f-ratios.
Astronomik seems to have a different approach. In the end, no matter the design, what is important is the performance and these Astronomik seem to be quite good