FEI Talos/Arctica installation specifics¶

Install win32 version of python subpackages¶

Because all interaction with the scope uses COM interface that is only accessible through 32-bit architecture, python running Leginon component is the 32-bit version. Use the 32-bit Windows files (those marked as win32 and certainly not the ones says 64) in http://emg.nysbc.org/projects/leginon/files for these.

Here is the full list

Program	package web site	local copy of win32 installer
Python 2.7.16	https://www.python.org	python-2.7.16.msi
wxPython 2.5.2.8 or newer	https://www.wxpython.org	wxPython2.8-win32-unicode-2.8.12.1-py27.exe
Python Imaging Library (PIL) 1.1.4 or newer	http://www.pythonware.com/products/pil/	PIL-1.1.7.win32-py2.7.exe
NumPy	(use only from our file to match compiled numextension	numpy-1.7.0-win32-python2.7.exe
SciPy 0.5.1 or newer	http://www.scipy.org	scipy-0.11.0-win32-superpack-python2.7.exe

Leginon 3.5 or before

MySQL Python client 1.2 or newer

http://sourceforge.net/projects/mysql-python

MySQL-python-1.2.4b4.win32-py2.7.exe

Leginon 3.6 and up

pyMySQL 0.10.1 (not higher)

https://pypi.org/project/PyMySQL/

pyMySQL-0.10.1-py2.py3-none-any.whl

Program	package web site	local copy of win32 installer
comtypes 0.6.2	http://sourceforge.net/projects/comtypes"	comtypes-0.6.2.win32.exe

Important: Install Python under a custom named folder¶

If your Talos/Arctica has a 64-bit Python pre-installed unde default python location C:\Python27, we need to name our installation with another name, such as C:\Python27-win32.
This is set during python installation.

The rest of the installation is similar to other FEI systems.

instruments.cfg¶

cs is constant for sperical abberation

For Talos series:

[TEM]
class: fei.Talos
cs: 2.7e-3

For Arctica series:

[TEM]
class: fei.Arctica
cs: 2.7e-3

Testing with pyscope¶

In python command

For Talos:

from pyscope import fei
t = fei.Talos()
t.getMagnification()

For Arctica:

from pyscope import fei
t = fei.Arctica()
t.getMagnification()

Trouble Shooting¶

unable to initializ Tecnai interface error

Programs to open before Leginon Client: None¶