Tegninger af planeter
Mars
1980 og 1982. 60 mm, 75 mm, og 203 mm
1982, 203 mm F/7, 158X
1988, 333 mm reduceret til 125 mm F/12, 150X
2005, 508 mm F/5, 257X
1988, 333 mm reduceret til 125 mm F/12, 150X
Jupiter
1979, 60 mm F/15, 151X
1979, 60 mm F/15, 151X
1979, 60 mm F/15, 151X
1979, 60 mm F/15, 101-151X
1979-80, 60 mm F/15, 101X-151X
1980, 60 mm F/15, 101X
1980, 60 mm F/15, 101X
1981, 203 mm F/7, 158-237X
1981, 203 mm F/7, 158X
1981, 203 mm F/7, 158X
1981, 203 mm F/7, 158X, 125 mm F/12, 148X
2001-2004, 180 mm F/10, 333 mm, F/4.5
2004-2006, 333 mm F/4.5, 508 mm F/4.5
2006, 508 mm, 172X