Thread: Long perng refractors
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Old 28-02-2014, 12:28 PM
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rmuhlack (Richard)
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I have a LP 80mm f6 achromat, which I have experimented with for AP (Using a WO p-flat 88 field flattener and a WO VR1 violet reducing filter). See this thread http://www.iceinspace.com.au/forum/s...d.php?t=117205
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