Thread: Star Analyser : hopeless on visual only?
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Old 25-10-2013, 12:48 PM
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Merlin66 (Ken)
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Merlin66 is offline 		 
Join Date: Oct 2005
Location: Junortoun Vic
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Rob,
Spectra are typically 5 mag fainter than the target star....ie you need a camera and exposure capable of recording 12 mag stars to collect spectra from a 7 mag star....
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