[Narsuitus]

Here are the guidelines I use when shooting lunar eclipses with a camera and photo lens (as opposed to using a camera and telescope):

2000mm f/22 mirror lens (1000mm f/11 mirror lens with 2x teleconverter)
Manual focus mode
ISO 400
Manual exposure mode

Full moon …… 1/125 sec
5% eclipse …. 1/60 sec
25% eclipse …1/15 sec
50% eclipse …1/8 sec
75% eclipse ….¼ sec
95% eclipse ….½ sec
Full eclipse ….1 sec to 4 minutes

Please note:
1. The exposure guidelines above do not take film reciprocity failure into consideration.
2. I use a tripod head with a tracking motor to compensate for the movement of the moon.
3. I bracket my shots.
4. I use a cable release
5. I use the mirror-up or the mirror lock-up feature of the SLR to reduce camera vibrations.