Jump to content


Dew strap and metal dew shields?

Recommended Posts

1 hour ago, 10-7 said:

I have a apertura AD10" dob scope I live in mid Michigan, it gets cold up here ! Do I need to use a dew strap on my scope dew can be heavy up here,patio table can be very wet  ?

For a dob, a wrap-around shield to give the secondary a little more cover is a no-brainer in my view; straps don't tend to really help, since the optics are decoupled from the outer tube. Big dobs can benefit from primary heating, but realistically if the primary's dewed up your conditions are probably poor enough to not be worth it. Glue-on secondary heaters can be a useful addition but definitely try passive methods (shields) before you muck about with that, since getting the wiring onto the spider without causing issues can be fiddly.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.