19
"Ortho 4mm",44,4
"Ortho 4mm w/2X",44,2
"Ortho 9mm",44,9
"Ortho 18mm",45,18
"Nagler 4.8mm",82,4.8
"Nagler 4.8mm w/2X",82,2.4
"Nagler 7mm",82,7
"Nagler 13mm",82,13
"Nagler 16mm",82,16
"Plossl,7.4mm",50,7.4
"Plossl 7.4mm w/2X",50,3.7
"Plossl 10.5mm",50,10.5
"Plossl 13mm",50,13
"Plossl 17mm",50,17
"Plossl 26mm",50,26
"Plossl 40mm",50,40
"Zoom 7mm",65,7
"Zoom 7mm w/2X",65,3.5
"Zoom 21mm",35,21

The first entry is the number of eyepieces.  Max is 20.  Each eyepiece goes on a single line.  Enter the display name in quotes, followed by a comma.  Then enter the apparent field of view in degrees, followed by a comma and finally th eyepiect focal length in mm.  Make sure this file is in the same folder as the moon executable file.
