P r i m a L u c e L a b S . p . A .
E AG L E 4 U s e r M a n u a l
- EYE sensor data
EAGLE4 include the EYE sensor to automatically measure the sky brightness for you (in magnitude per square arc second
- mag/arcsec
2
) with a 5 degree field of view, only where your telescope is pointed. The EYE value is shown in real time in
the EAGLE Manager interface where you can easily monitor sky quality measurements. EAGLE4 has two EYE sensors, one
on each end of the EAGLE. Based on how you orient your EAGLE on your telescope, you can simply unthread and move the
lens to the other sensor that is pointing to the sky, select the proper position of the lens in the EAGLE Manager interface,
and you are ready to read the sky brightness in any installation. EAGLE EYE has a narrow field of view, so it measures dar-
kness of the night sky only in the part of the sky where your telescope is really pointed at. This way the EAGLE EYE won’t
be influenced, for example, by clouds that may be present in other parts of the sky. For the same reason, the proximity of
your telescope or other accessories (like dew shield) won’t interfere with the measurements.
In the EAGLE Manager interface you can select the front EYE sensor (the one to the left) or the back EYE sensor (the one
to the right) based on how you installed the EAGLE on your telescope (image 42). The active EYE sensor will become blue.
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Image 42: The EYE sensors in EAGLE Manager interface
EYE rear
sensor
EYE front
sensor
Image 40: If you install your EAGLE with the front part (the one
with EAGLE name) facing the sky, please thread the EYE lens in
front and close the back EYE sensor with the red cap.
Image 41: If you install your EAGLE with the back part (the one
with the power ports) facing the sky, please thread the EYE lens in
the back sensor and close the front EYE sensor with the red cap.
