| Coliwabl |
| (scholastic sledgehammer) |
| 06/30/09 10:47 AM |
| Attachment |
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Re: Which H-alpha filter?
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I've been using the Astronomik 13nm Ha filter with my Canon 20Da and have gotten fair results. I've attached a photo of the filter as well as a shot of IC434 as an example using it. Good luck!