Co/Prerequisite: Ast 105 requires as co/prequisite Ast 103 or Ast 104, or without these the consent of the lab coordinator. Consent is relatively easy to get, but the lab coordinator (David Jeffery <david.jeffery@unlv.edu>) does want to make sure that you can succeed in the course without the co/prerequisite.
File: ast_105_co_prequisite.html.