What tent brands work at OSH
http://www.eurekatent.com/equinox.asp
That will work as long as you remember to point the opening to the east.
My preference is for a full length fly with a vestibule to shelter the
tent opening. This will give you someplace to put your shoes outside the
tent but protected from the elements. Also helps keep the tent clean by
not tracking dirt and mud into the tent.