Comments on: How do I deal with dew when using my telescope? http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/ Wed, 08 Feb 2012 23:32:58 +0000 http://wordpress.org/?v=2.7 hourly 1 By: Geoff G http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/comment-page-1/#comment-2452 Geoff G Sat, 20 Feb 2010 04:56:09 +0000 http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/#comment-2452 Dew is almost never a problem on the primary of a solid-tube Newtonian. The chance of dew forming at the bottom of a 4-foot tube is virtually nil. Dew sometimes forms on the secondary, but even this is rare, because the mirror is facing away from the sky. Dew is more of a problem with truss-tube Dobs, though I've only once been shut down by dew in eight years. Refractors and cats are where dew becomes a serious problem.<a href="http://www.doggydisease.com/blog/"> Geoff G</a> Dew is almost never a problem on the primary of a solid-tube Newtonian. The chance of dew forming at the bottom of a 4-foot tube is virtually nil. Dew sometimes forms on the secondary, but even this is rare, because the mirror is facing away from the sky. Dew is more of a problem with truss-tube Dobs, though I’ve only once been shut down by dew in eight years.

Refractors and cats are where dew becomes a serious problem. Geoff G

]]> By: Viola At Neon http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/comment-page-1/#comment-2451 Viola At Neon Wed, 17 Feb 2010 11:51:17 +0000 http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/#comment-2451 Dew on the finder and the eyepieces can be an issue, but is your primary really dewing up? This isn't usually an issue with Newtonian scopes.<a href="http://www.resumeminers.com/Recruiting/Resume-Sourcing.htm"> Viola At Neon</a> Dew on the finder and the eyepieces can be an issue, but is your primary really dewing up? This isn’t usually an issue with Newtonian scopes. Viola At Neon

]]> By: B. http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/comment-page-1/#comment-2450 B. Wed, 17 Feb 2010 11:28:06 +0000 http://www.telescopebuyingguide.com/blog/how-do-i-deal-with-dew-when-using-my-telescope/#comment-2450 You can buy something called a Dew Heater which wraps around the outside of your tube at the level of the mirror and it helps to keep the mirror warm and dry. In a pinch you can also take those chemical hand warmers and using a big rubber band or bunji cords you can place them all along the outside of the tube again at the mirror level to keep the mirror warm too. Do not try the plastic wrap. Yes it will distort the images plus the dew will form on the plastic. Orion sells Dew Heaters<a href="http://www.greattoolsusa.com/routers-4346"> B.</a> You can buy something called a Dew Heater which wraps around the outside of your tube at the level of the mirror and it helps to keep the mirror warm and dry.

In a pinch you can also take those chemical hand warmers and using a big rubber band or bunji cords you can place them all along the outside of the tube again at the mirror level to keep the mirror warm too.

Do not try the plastic wrap. Yes it will distort the images plus the dew will form on the plastic.

Orion sells Dew Heaters B.

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