Celestron G-9.25 Instruction Manual page 50

The following table lists exposures for eyepiece projection with a 10mm eyepiece.
All exposure times are listed in seconds or fractions of a second.
Planet Planet Planet Planet Planet ISO 50 ISO 50 ISO 50 ISO 50 ISO 50
Moon Moon Moon
Moon Moon
Mercury Mercury
Mercury Mercury Mercury
Venus Venus Venus Venus Venus
Mars Mars Mars
Mars Mars
Jupiter Jupiter
Jupiter Jupiter Jupiter
Saturn Saturn Saturn Saturn Saturn
The exposure times listed here should be used as a starting point. Always
make exposures that are longer and shorter than the recommended time.
Also, try bracketing your exposures, taking a few photos at each shutter
speed. This will ensure that you will get a good photo. It is not uncommon to
go through an entire roll of 36 exposures and have only one shot turn out.
Also, don't expect to record more detail than you can see visually in the
eyepiece at the time you are photographing.
Once you have mastered the technique, experiment with different films,
different focal length eyepieces, and even different filters.
ISO 100 ISO 100 ISO 100 ISO 100 ISO 100 ISO 200 ISO 200 ISO 200 ISO 200 ISO 200
4 2
16 8
1/2 1/4
16 8
8 4
16 4
Table 6-2
Celestial Photography • 47
ISO 400 ISO 400 ISO 400 ISO 400 ISO 400
1 1/2
4 2
1/8 1/15
4 2
2 1
4 2