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steve007m13
journeyman
Reged: 08/08/06
Posts: 5
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Re: Collins I 3
07/30/08 09:36 AM
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Just used the i-3 thin film last night with the 18 inch f/5. Wow m-27 and m-17 with the 13nm H-A filter were spectacular  . It was difficult at first to find the swan shape because there was so much nebula visable in and around m-17. Comparing my old ccd images (using a now sold Sbig-237) revealed more detail in the I-3. You don't get the true color of the objects you get with ccd but the I-3 showed more detail and the contrast was greater at least comparing them with the pictures I took. The H-a filter is good also in getting the background darker.
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