![[OBO telescope primary]](images/oboprimary.jpg)
O'Brien observatory and telescope fact sheet.
Location:
Marine-on-St. Croix, MN
-92°46.6' E, +45°10.9' N
-92°46.6' E, +45°10.9' N
Opened:
Spring 1968
Altitude:
308 m
Wavebands:
IR, Optical
Primary Diameter:
76.2 cm (30")
Focal Ratio:
f/10.07
Plate Scale:
26.9 arcsec/mm
Weather:
- Clear sky clock:
- Satellite images: NCAR
- Satellite images: GOES
- National Weather Service: Marine-on-St. Croix