ILLUMINATED POLAR FINDER FOR EXOS II INSTRUCTION MANUAL ITEM: PFEXOS2 V.1.
SAFETY INFORMATION SUN WARNING DO NOT USE a telescope or any accompanying finder scope to look at or near the Sun! Even momentary visual contact with the Sun’s light rays can instantly cause irreversible damage to your eye(s). Eye damage can be painless, so there is no warning to the observer that damage has occurred until it is too late. Take extra care when using the telescope or a finder scope during daylight hours, and do not point either at or near the Sun.
Illuminated Polar Alignment Viewfinder Normally, a rough alignment with the celestial pole is sufficient for visual purposes. However, for those observers who need to meet the more demanding requirements of astrophotography, this polar alignment viewfinder allows the telescope mount to be more precisely aligned with true north. How to install and use the Illuminated Polar Alignment Viewfinder Installing the Polar Alignment Viewfinder: 1.
Observers in the Northern Hemisphere N-7 a) Determine the rough longitude of your observing site (example: Munich is 12º E). Now determine the longitude of the time meridian according to your local time. For the central European time, this is 15º E (do not use daylight savings time). Calculate the difference between both longitudes; in our example with Munich, it is 3º. N-7 b) Now set the secondary scale at your month ring (E 20 10...) to this difference.
Observers in the Southern Hemisphere S-7 a) Look at the trapezoid association in the polar viewfinder’s reticle. They represent the configuration of Sigma, Tau, Chi and Ypsilon Octantis in the night sky. Turn the RA axis until the “real” stars roughly over the edge points in the trapezoid figure. S-7 b) Both trapezoids may still be parallel shifted. Adjust this offset by using the latitude and azimuth fine controls. An additional RA correction may be necessary.
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