Neil's image is wonderful but I like the nebula part of this Mike Chapa TEC160mm fluorite triplet image better. Despite smaller aperture (TMB203mm ED versus TEC 160mm fluorite). Neil's star colours are better but perhaps the fluorite triplet is showing its class here. I hear there is no difference between ED glass and fluorite but I don't believe it.
There are differences - mainly in subtle hues etc that don't necessarly show up in the hard numbers of normal tests.
Greg
refractor snob.
Quote:
Originally Posted by Bassnut
|