We work on a project also requiring absolute (pan tilt angle) positioning combined with a large camera housing. After some surfing on the web, we found the following units that might be usefull for such applications:
1) 2Bsecurity PT3001
2) eneo-security VPT-501, VPT-601, VPT-651
3) Videotec Ulisse (Maxi)
4) Dennard/dedicated micros infinity (small)
If someone else knows/found other units with abolute positioning (Point&Go) that can be combined with a large camera housing, please let me know.
Marcel Rossewij