DESI GFA viewer
DESI center:
GFA 0 / GUIDE0: Center
GFA 1 / FOCUS1: Center
GFA 2 / GUIDE2: Center
GFA 3 / FOCUS3: Center
GFA 4 / GUIDE4: Center
GFA 5 / GUIDE5: Center
GFA 6 / FOCUS6: Center
GFA 7 / GUIDE7: Center
GFA 8 / FOCUS8: Center
GFA 9 / GUIDE9: Center