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pjstoker
sage
Reged: 04/21/06
Posts: 454
Loc: So. Calif, USA
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Re: Double stacked Solarscope 50?
01/27/08 12:54 PM
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Doug, with the Solarscope single stack 70mm filter I found it necessary to use the regular blocking filter. If you are going to use them DS, then I found that the photographic BF will give you the best view/images. I’ve use the Solarscope 50’s, 60,s and 70mm filters both single and double stacked with both blocking filters. I have a DS set of Solarscope 60’s and also both blocking filters. While I can use the photographic blocking filter with the SS 50’s and 60’s visually, I find as Terry mentioned it is a bit bright, and I prefer the regular blocking filter for visual use. However, the photographic BF is great for imaging with these filters because of the faster shutter speed. On the other hand, even a 1/1000 sec exposure with a SS 70mm filter and photographic BF wasn’t a fast enough shutter speed to prevent overexposure with a scope @ 480mm FL. But with that BF and the second 70mm filter, imaging is no problem and the views were some of the best I have ever seen. Sharp and even all the way across the disk, as well as well-defined prominences on the limb, and all in one view.
Here is a link to my set up. You will notice that Ken puts blue tape on the photographic BF to distinguish it from the regular BF.
http://home.earthlink.net/~pjstok/Wp_75_SolScope.html
Pat
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Patrick Stoker
http://home.earthlink.net/~pjstok/wp10_intro.htm
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