Welcome to The TEM-indexing program!
In order to index the negatives, the program needs to know which mineral was under survey
Specifically the crystallographic parameters of the mineral must be known.
The actual indexing requires two vectors (NOT parallel) measured on a negative and converted to d-spacings
The length of the vectors (in Ångströms) must be given, as well as the angle between them (as measurered on the negative).
All lengths MUST be input in aangstroem (1 nm = 10 Å!)