I made a crosshair eyepiece today. you can check it out here. I tell how you can make it and what you need! with pictures!!!
CS!
Update 3/5/09
A small Review is now up on the eyepiece.
Wednesday, April 1, 2009
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About Me
- John Dalane
- Hey, I'm 17 years old. I'm a Christian. I don't think the universe came by chance, I believe God made it! I started Astronomy back in June 2007, And I Love it. I have learned a lot! I really want others to learn what I have learned that's why I have this Blog.
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Updated 11/07/09
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1 comments:
You can do better than twist-ties. Some recommend spider silk, but I've found it difficult to work with, hard to see at times, VERY delicate, and tends to sag with age. I tried several types of hair on a 25mm Kellner--first, one of my beard whiskers. Not good--it was like trying to see around an oak tree. Even my thinning head hair was too wide. Eventually I started trying animal hair, and settled on the thin hair (double coat) from a black Newfoundland dog. I removed the field stop, marked 90-degree spots, then put a drop of Super Glue where the hairs went and stretched the hair across the marked places on the stop. Fifteen years later, I've still got it. (The cross-hair eyepiece, not the dog. I'd rather have the dog.)
Cat fur would probably work as well, if it's black, but the long Newfie hair was easy to work with, although it had to be stretched tight to keep the natural curl out.
I also made a guiding eyepiece with a 9mm, but the hairs were *almost* too thick. That might be a better candidate for spider silk, as the pieces would be short enough that they wouldn't sag, and protected up inside the eyepiece barrel, plus the higher magnification would make the silk more visible.
Ed.
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