Thread: How bad could a achromatic refractor be?
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Old 27-09-2013, 09:40 PM
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cometcatcher (Kevin)
<--- Comet Hale-Bopp

cometcatcher is offline 		 
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Location: Cloudy Mackay
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Here's another link.

http://www.iceinspace.com.au/forum/s...d.php?t=112179

I'm still experimenting. Some star fields are more problematic than others. The Orion neb and associated stars are a real test.
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