Thread: Coma corrector
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Old 05-02-2012, 01:34 PM
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mswhin63 (Malcolm)
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Join Date: May 2009
Location: Para Hills, South Australia
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Quote:
Originally Posted by clive milne View Post
One criticism I think needs to be fairly levelled at GSO is the lack of specs on this product. Things like; how much in focus does it require, how far is the focal plane shifted from the native focus? Spot diagrams or at least some indication of field correction and maybe vignetting curves wouldn't go astray either?
I think it is all about cost, I don't think there is ever enough effort on product information on low cost manufacturers. It is a trade-off. They most probably buy a generic unit from a manufacturer then rename it and provide basic information (They may not even know the difference). There are a lot of consumers that are not interested is detailed specs and that is where they get their money from. People like you and me try to track down relevant information and spend a lot of time to see if the price is worth it otherwise give-up and buy a more expensive unit with detailed specs.
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