 The Astro-Physics Starfire 102 mm (4 inch) f /8 scope is currently mounted on my Astro-Physics AP 900GTO mount in tandem with an Astro-Physics 6 inch f
/12 Super Planetary APO. See my astronomy home page for jpg photos of the complete
setup. Both of these Astro-Physics APO scopes are in fine
condition and put up really nice images free of false colors. The Starfire 102 mm (4 inch) f
/8 (812 f.l.) (i.e., 101.6 x 8 = 812.8 mm focal length) when combined
with a
Pentax SMC 0.965 inch 3.8XP (3.8 mm) (ortho?) eyepiece puts up a sharp
image at 812mm/3.8mm = 214x magnification (about 53x per inch) even in
mediocre seeing. On the other hand, the short focal length, 812 mm,
allows for very wide fields of view approaching 3 degrees with a
Televue 55 mm Plossl |
