Antlia Off Axis Guider and Filter Drawer Assembly. This is a combined OAG and 2inch filter draw in one unit. This OAG has a large 12x12mm prism
Like new, hardly been used as I switched to a ZWO OAG shortly after buying the Antilia - to be honest, I had forgotten that I bought this.
https://www.firstlightoptics.com/fil...-assembly.html
$250 plus shipping