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108
3. PREPARATION
Before you begin the next Instructional Manual
section “TRAINING PROCEDURE”, please read
the following and follow the indicated
recommendations below.
3.1. ATMOSPHERIC FACTORS & FOCUSING
Local changes in atmosphere factors such as
density, humidity, temperature, and pressure
will decrease focus offset precision calculated by
the “Training Procedure”, as well as changing
viewing locations (altitude, etc.…) with different
atmospheric factors. Therefore, since the
weather conditions can change even in a few
minutes, it may be necessary to fine-focus the
initially proposed ROTARION AUTOFOCUS focus
coordinates.
When you fine-focus one or all eyepieces
mounted in positions PORT-1 till PORT-4 using
the IN or OUT keys or with the Auto Advance
Keys (21), the system will memorize the new
focus offsets reproducing later excellent
autofocus results.
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