Antlia OAG with built-in Filter Drawer

[Sitt]

LNIB, only selling as I bought a filter wheel for my OSC
Plenty of various size attachments included.
http://www.antliafilter.com/pd.jsp?id=130

Asking $350 ONO Plus Shipping

[Sitt]

Price reduced to $350

[nickb00]

Hi. How big is the hole in the oag above the prism where light goes up to the guide camera chip? Why are you selling?
thanks Nick

[Sitt]

There's a link to the manufacturers website with all the specs in my post. I'm selling because I no longer use it. OAG is like new. Cheers

[nickb00]

I cannot find how big the hole is on the manufacturers website.Can you please measure this and let me know. thanks Nick