Quote:
Originally Posted by AlexN
I'm using a Baader MPCC to flatten the field of my TMB F/6 refractor. I looked at many other options (and spent quite a lot of money testing them...)
I finally decided I did not want any focal reduction (most flatteners are a 0.8x or 0.85x reducer as well) I was told by the previous owner of my refractor that an MPCC would flatten the field provided the distance from the chip to the MPCC was exactly the right distance.... I thought, it can't hurt to try it out... Gave it a go and have been using the MPCC since.. Perfectly flat field without any focal length reduction..
|
Alex,
Sounds like an added bonus for the MPCC - it also works as a field flattener for refractors!!
ps the Televue paracorr increases focal length by 15%
