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You'll just love my 10",full aperture,water filled prism+grating, once it gets finished. I tried the prototype on a 6", seems ok

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Thanks - do you use a motor to stir the fluid to avoid convection I'm really spoilt for choice with prisms/gratings - a 10" glass prism will be returned to the BAA soon

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Nytecam 51N 0.1W
Meade 30cm LX200+ETX-70+DS-2090+C8+Ha+CaK PSTs SBIG SGS+homebuilt spectrographs
Starlight SXVF_M9/Lodestar/Canon 300D DSLR/Fuji E550
My observatory build-ETX-70 imaging-spectro page

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