NMSU Astronomy has an "open house" roughly once per month on a Friday closest to the first quarter Moon. For dates and times visit their web page.
NMSU Astronomy Open House schedule.
The street address is Williams Avenue 0.1 miles north of Wells Street, Las Cruces, NM 88003. The GPS coordinates: 106° 44' 55" W + 32° 16' 38" N
The red arrows in the images show the location. Here is the location on Google Maps.