... It is a simple 1 X finder scope that mounts to almost any telescope. ... It projects three red circles into space, allowing you to center the scope on bright stars or planets. ... In many cases it is the only finder scope you'll need. (in bright city skies, it will be more difficult to use). Place the Telrad circles between the bright stars shown around the Messier object you wish to view, and with you widest field eyepiece (usually the lowest power) you should find the Messier Object very easily. ...

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Phase range for plots: -0.5 to 1.0 0.0 to 2.0 0.0 to 1.0 . ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... Two period search methods are currently implemented. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . ...