Quote:
Originally Posted by Keshdogga
Would a Ha filter achieve similar results to the CLS CCD filter Dave mentioned?
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The CLS will increase your contrast but will still let a lot of light in. Narrowband filters (Ha, Sii, Oiii, Hbeta, etc...) only let a very narrow and specific band of light in. Ha is good value as you can get results in light polluted environment as well as imaging when the moon is up. There's a lot of info in these forums if you do a quick search for narrowband imaging in the deepsky section.