Comet Watching Gear

If you're planning to go comet-watching, here are some suggestions:

  • A pair of good binoculars; 10x50's would be best for watching the direct impact; or,
  • A telescope with 60mm aperture or larger.

  • To track the comet as it approaches its rendezvous with the Deep Impact spacecraft, you'll need a telescope with about a 60mm aperture or larger. Bigger is better. The larger the aperture, the more light the scope gathers, and Comet 9P/Tempel 1 is a dim object, nearly 40 times dimmer than can be seen by the unaided eye.

    Ask The Experts

    Have questions about an item or need advice on selecting the right astronomy gear? Our team of telescope experts is here to help! Avid amateur astronomers themselves, they've tested products in the field and can provide personalized recommendations.

    You can reach our Customer Support line at 1-800-303-5873. We're open 8 a.m. to 8 p.m. Central Time, Monday through Friday and 9 a.m. to 4 p.m. on Saturday.

    After hours? Drop us an email at We'll get back to you as soon as possible, usually within 1 business day.