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Old July 25th 03, 06:52 PM
Jon Yardley
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Default Filter Help!!!!

Hi,

Could anyone help? I need to know infomomation about different telescope
filters that are used for deep sky and planetary observations

I need to get hold of information, which tells me what they are used for and
what images taken through the filters tell us.

THe filters i need info on a

Sloan U', I' and R'
Bessel B and V
OIII
H-Alpha
Infra-red bands j, h, k, l

Any help would be appreciated

--

Jon



 




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