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Sony a900 Manual page 17

Astrophotography
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FOCUS
-
RIGHT ANGLE MAGNIFIER
Fit Sony right angle x2 viewfinder
accessory to the viewfinder
eyepiece, FDA-A1AM. Adjust the
eye lens focuser until the screen
grads are in focus. Use a bright
star & adjust the rack & pinion
focuser to bring it into sharp
focus. Take a short exposure &
check the image on the LCD
screen @ x19. Adjust the fine
focus until the star image appears
sharply focused. Do this by
systematically racking the fine
focus in & then out until the
stellar image is smallest.

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