Quote:
Originally Posted by alistairsam
Hi
Any experience with the baader UHC-s filters?
Thanks
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I don't have one, was going to get one but got a bit side tracked. However I've looked at the spectrogram and it seems like a more narrow band nebula filter compared to the CLS. Theoretically it would give more contrast but at the same time need a longer exposure time. The Baader UHC-S has a photopic transmittance of 22.5% so it does kill a lot of light.