Useful facts about our microscopes
Pixel sizes on the CCD arrays (GIF for T30).

First zero of CTF at varying defocus

Resolution cutoffs for objective apertures.

I've used 2.2mm as the distance from the objective lens to the aperture which is reported for the T30. Lambda = 12.398 / sqrt [kV * (1022 + kV)] (from the SPIDER glossary)

What's in the extended header?

0 = alpha tilt

1 = 0.0000

2 = stage X

3 = stage Y

5 = stage Z

6 = X shift from previous section

7 = Y shift from previous section

8 = exposure time

9 = mean intensity

10 = angle of tilt axis

11 = pixel size

12 = mag reported by microsope (not actual mag, see mag table above)