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It was Peter that was having blue halos around bright stars. He tried various filters to minimise that effect. That was with a TEC140.
Yuri was told about this problem and he has tweaked the colour correction of the latest run of TEC140s and they are now a lot better corrected in blue than before.
The icx694 is about twice as sensitive as most Kodak sensors in the blue region. This is great for O111 imaging as they are the most sensitive sensors in that band.
I wouldn't fret over it. Its an FPL53 triplet, sounds good. F6.9 is kind of fast and faster scopes are more likely to have trouble than slower ones. Worst case is you change to a KAF8300 camera if its a big issue.
Greg.
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