National Geographic 70/900 Operating Instructions Manual page 7

No. 18 No. 19
18
18
20
X
19
f=20 mm f=12.5 mm f=4 mm
No. 20
The Moon
No. 21
Orion Nebula (M42)
No. 22
Ring Nebula in Lyra
constellation (M57)
No. 23
Dumbbell Nebula in
the Vulpecula (Fox)
constellation (M27)
7