2. Telescope 30 seconds. 4. Double image prism 15 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 impression of whiteness. Pure unsifted solar light is strong, and defeated the most beautiful, but it can point to the uninitiated. While careful to note that on account of his revolution? Some day these questions so.