Quote:
Originally Posted by ChrisV
I don't understand why would you use a cls-type filter on top of the NB filter. The NB filter is determining the pass band.
To me, all the CLS filter will do is reduce transmission across its narrow band?
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Hi Chris,
You're right but I leave my Astronomic 2" CLS-CCD filter
in front of all other filters as I'm too lazy to remove it
and it prevents dust getting into my imaging train -
and all over the other filters.
My setup is here:
https://www.flickr.com/photos/247194...in/photostream
cheers
Allan