Quote:
Originally Posted by Merlin66
T&J,
The light from the PST etalon/ BF is tuned to Ha there are no other wavelengths getting through so any additional filters would do nothing.
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That would be a very "duh" moment to me............ thanks for stating the obvious.... kicking myself already
As for the barlow, I've used a 2.5x powermate in combination with a DBK 31 (not a 41) without success.
I have also now found an earlier thread that suggests dismantling the PST slightly, whilst this is well within my capability the mere thought of pulling the PST apart does not sit well with me (new toy and all), consequently I'm really hoping this piggyback barlow(1.5x )works out, the website says its ideal for webcams and PST's
thanks for the info on the optimum f ratio, I had no idea until now.
Cheers
Trent and Julie