Electrophysics AstroScope 9350, Operating Manual

Page: 20 / 55

8. Gain: The XL-1 has a maximum gain of +12db and the
XL-1S has a maximum of +30db. As you increase the
gain, the image quality decreases. Try and limit the gain
to no more than +6db on the XL-1 and between 12-18db
on the XL-1S.
*See the Canon operating instructions.
2.1.3.3.1 EOS to XL Adapter
You can use the full line of Canon EOS lenses on the Canon XL-1S
Camcorder with the use of the Canon XL-EOS Adapter. There is a
magnification increase of 7.2x the focal length of the EOS lens (for
example a 400mm EOS lens translates to a 2880mm lens on the
XL-1S). You can use the XL-EOS Adapter with the AstroScope
night vision system ONLY with the 9350EOS-Pair. The 9350XL-
Pair will not function in conjunction with the XL-EOS Adapter.
Canon XL-EOS Adapter
2.1.3.4 Use on Film Cameras
1. Select a fast film with an ISO of at least 1000. The user
can decide on black & white or color film, as both will
provide excellent imaging. Black & white films have
greater latitude and will produce a higher contrast image.
Color films will provide the green images.
2. Turn the “auto-focus” switch to manual focus. The auto-
focus cameras available today use a variance of contrast
to attain sharp focus. At low-light levels contrast is not
typically high enough for the auto-focus to operate
effectively, therefore manual focus generally is faster
and more accurate.
3. The camera should be set in the “manual exposure
mode”.
4. Adjust the lens to its widest aperture (e.g. f/1.4).
5. Adjust the shutter speed to 1/30 second as this is the
minimum speed you can hand-hold the camera.
2-8