Step 1 : Introduction to the question "5. You must never attempt to view the sun without a filter through any telescope because?"
...1. Its bad luck 2. the solar radiation could blind you 3. telescopes are for night time use only 4. you will lose polar alignment NEVER attempt to view the sun without a solar filter, shield or lens. The concentrated solar radiation could blind you in a nanosecond. This caution is engraved on even advanced model telescopes.