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ASKAR dual band filters
I'm curious about these dual band filters I've seen on AliExpress and Cuiv on YouTube. Ali offers C1 and C2 series whereas Cuiv reviews both.
The difference seems to be in the bandwidth. The C series are broader and consequently less effective at suppressing background light. But they are also quite a bit cheaper.
In each of the C and D, there are 2 filters. One is a Ha/O3 and the second is S2/O3 meaning that by using both, you can extract a double dose of O3 and singles of Ha and S2. That gives you a full SHO palette ��
I would be glad to read any experiences from fellow IISers.
Last edited by pmrid; 15-04-2024 at 11:02 AM.
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