Celestron Ultima 8 Instruction Manual page 78

With your camera attached to the telescope, you are ready for prime focus photography. Start with an easy object like the
Moon. Here's how to do it:
1. Load your camera with film that has a moderate-to-fast speed (i.e., ISO rating). Faster films are more desirable when
the Moon is a crescent. When the Moon is near full, and at its brightest, slower films are more desirable. Here are
some film recommendations:
T-Max 100
T-Max 400
Any 100 to 400 ISO color slide film
Fuji Super HG 400
Ektar 25 or 100
2. Center the Moon in the field of your Ultima Telescope.
3. Focus the telescope by turning the focus knob until the image is sharp.
4. Set the shutter speed to the appropriate setting (see Table 9-1).
5. Trip the shutter using a cable release.
6. Advance the film and repeat the process.
Lunar Phase
Crescent
Quarter
Full
Table 9-1 Above is a listing of recommended exposure times when photographing the Moon at the prime focus of
your Celestron Ultima Telescope.
78
Figure 9-1
ISO 50 ISO 100
1/2 1/4
1/15 1/30
1/30 1/60
ISO 200 ISO 400
1/8 1/15
1/60 1/125
1/125 1/250