[3dem] gain reference for new ultrascan 4x4

[Alexandra Courtis]

Hi,

Would anyone have a quick time estimate regarding how long a gain reference
should take for a new 4x4 ultrascan (gatan)? I've been trying to do this on
our Tecnai F20 @ mag=9800x, counts=8,000, and averaging=4 with little
success. I actually have been timing my most recent attempt and it is still
going after 6h leading me to have some concerns about a glitch in the
system.

Thank you so much, I greatly appreciate it.
Best regards,
Alexandra M. Courtis

-- 
Alexandra Courtis
Harvard College 2011
acourtis at fas.harvard.edu
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