Quote:
Originally Posted by renormalised
The Baaders get rid of pretty much all of the violet fringing you get around bright objects with achros. I also believe they have UV/IR block as well.
Here's what they say at MyAstroShop. I've been looking to get one for my achro. Might get one next payday, if I don't get too many bills in the meantime!!!! 
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Holy smokin' joe Batman! $179 !!!!
I went and read some CN reviews about this filter and discovered that it also reduces through light by up to around 30%.
To pay so much and lose so much light just doesn't seem worth it.
Quote:
Originally Posted by mill
Niiiicceeee!! Ken 
I will bring my semi apo filter with me in November.
It takes away the purple halo's around the stars.
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Thanks Martin, worth a try.
I'm not impressed about the reported 30% loss of light though
But you never know.
But on the subject of any star fringing, remember that I am not attempting any imaging with this set-up.
This is purely for live viewing. A small bit of fringe around a star is ok compared to the wow factor from people seeing an instant image appear.
The screen grabs are only to show what we were seeing 'live'.

If another type of filter makes the whole presentation better then it may be worth it, but not at $179 and 30% loss.