longitude step for geocoding should not depend on reference point

[falkamelung]

I see this line. Does that mean taht if you choose a different reference point e will get different lon grid slice? That is not a good idea. Please use a a quantity that does not change so easily.

./objects/process_data.py:152:        lon_step = find_longitude_degree(ref_lat, lat_step)

[disilvestro]

Doesn't matter as long as is in the frame.