Dave, I trust you have googled a phrase like 'flat field light box' which yields a wide range of home-made versions. Rather than a white reflecting surface, you might consider white Opal glass acting as a diffuser of transmitted light. I gather the intent is to provide a uniform light intensity coming from all portions of the surface seen by the telescope. If that is correct, how uniform must if be? Within a 1/3 f/stop variation or more uniform than that? Ed Stimpson ---------------------------- Quoting Dave Gary <davegary@me.com>:
For those that image?what type of flat-field setup do you have? Did you purchase the setup or did you build your own flat-field box? What type of light source do you use? If anyone has instructions on how to build a simple flat-field light box any information (pictures would be nice) would be greatly appreciated. Make the descriptions simple. Something that someone who nearly failed shop class (really, I almost did) could understand. Failing that, give me all the technical low-down and I?ll get the wife to help me out so that it actually works when the project is completed.
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