Phillyo Posted June 9, 2015 Share Posted June 9, 2015 I currently use a 3nm Astrodon Ha filter and I love it. When the darker nights start rolling back in I want to buy him a companion, unfortunately I can't afford both the SII and the OIII so I'd like people's opinion on which to get and why? I'm leaning towards the OIII. Thank you allPhilSent from my SM-T800 using Tapatalk Link to comment Share on other sites More sharing options...
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