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Originally Posted by Soldant
Thanks guys, I'll check into it.
astro_nutt: So you recommend an OIII?
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I just read pegster reply and I agree it would be a bit hard on a 70mm scope...check the "astronomik" website regarding aperature and filters...
For visual use, a narrowband filter like an OIII is the go for light-polluted areas..
but you do lose some of the image light in the process
When backyard observing with my 10" dob...I use a Sirius Optics CE1, (contrast enhancement), filter which is allows both OIII and Ha wavelengths through...kind of like a partial broardband...it does reduce light pollution without darkening the background sky as much as a conventionual LPR filter
...but...I do notice a slight reduction of incoming light...for that...I'll just let my eye adapt to the image a bit longer!!
I hope this helps!
Cheers!!
