Quote:
Originally Posted by Slawomir
Astro-Physics has a 2" Advanced Convertible Barlow for small to medium size chips for about US$250.
And then there is ultimate Baader Fluorite Flatfield Converter Barlow that covers a full frame sensor. But is will easily be around AU$1000 landed.
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I have used both. the AP imparts very little vignetting, but off axis is not particularly sharp.
The Baader FFC ( $A1325.00 landed with GST) ...well....expensive yes...but... is amazingly sharp....just perfect really.