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Compaq Graphical User Interface mar345 User Manual

Page 15

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mar345 Program Manual

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Table continued from previous page.
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Item

Description

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First image no.

Image number of first image. Range is 1 through 999.

No. of images

Number of images to be collected. Range is 1 through 999.

Exp. time

Exposure time in seconds. In DOSE mode, the actual time
may be different from the desired exposure time.

Oscillations

Number of

ϕ−

oscillations per image. One oscillation is

stronlgy recommended for exposure times < 15 min.

∆ ϕ

per image

ϕ

movement per image.

Starting

ϕ

ϕ

position to start data collection.

Distance

Distance crystal to detector.

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For convenience, the program calculates the maximum resolution possible from the chosen
distance and the chosen scan mode (image plate diameter).

The image names are created according to the following convention:

directory / root_TYPE_XXX.extension

TYPE is:

not used

in Single Data Set mode e.g. /images/zeo_001.mar1200

1, 2, 3 or 4

in Multiple Data Set mode e.g. /images/zeo_1_001.mar1200

INDEX

in Index Crystal mode

e.g. /images/zeo_INDEX_001.mar1200

A or B

in MAD Data mode

e.g. /images/zeo_A_001.mar1200

− XXX is a three digit image number like 027,
extension is:mar1200, mar1600, mar1800, mar2000, mar2300, mar2400, mar3000 or
mar345 for Output format "mar345", depending on the Scan mode chosen.

In Index Crystal mode "First image number" is replaced by "

ϕ

increment" (see above).

The starting image will always be 001 and the following images will have numbers that will be
calculated from their

ϕ

−position relative to image number 001 according to:

XXX = i *

ϕ

increment /

∆ ϕ

+ 1

(i=0,1,2,3...)

e.g. with

ϕ

increment = 90.0 and

∆ ϕ

= 2.0, XXX = 1, 46, 91, 136, etc.