Oops, yeah AcquireSupport uses the ScriptTelescope object too. You're gonna have to lift the code out of AcquireSupport and tweak it for the ASP environment. CvtJ2000 calls EquDist2 and you'll have to lift that out as well. Actually I suggest you lift Eqdist() and use it, since it is in VBS and has no dependencies on the rectangular coordinate library. EQDist() acts the same as EQDist2()