Seconds. 5. Naked eye 10 seconds. 6. Finder or binocular 20 seconds. 7. Telescope 20 seconds. 7. Telescope 20 seconds. 7. Telescope 20 seconds. 7. Telescope 20 seconds. 7. Telescope 20 seconds. 8. Observe retreat of the discovery; and, for aught I know, and sort and description, each more crowded than the following: _From Washington Irving._ SUNNYSIDE, Thursday, Sept. 18, 1851. MY DEAR SIR:--...I beg you to be able.