SCOPE APERTURE ? 7                                                              
POWER ? 9                                                                       
LIM MAG AT ZENITH ? 2                                                           
OBSERVER'S AGE ? 3                                                              
TELESCOPE TYPE (1-3) ? 2                                                        
CLEANLINESS (1-9) ? 8                                                           
COLOR INDEX OF STAR ? 4                                                         
ZENITH DISTANCE ? 56789                                                         
EXTINCTION COEFF ? 1.2                                                          
SEEING DISK RADIUS ? 2.3                                                        
EXPERIENCE (1-9) ? 3                                                            
VISUAL LIMITING MAGNITUDE =  61.4254