I want to make a dew shield

[Jimtheslim]

Forgive me if I am going over old ground but I have tried running a search and couldn't find a close match. I want to make a dew shield for my Skywatcher 250px. I have a camping mat, sharp knife and an intention to spend some time ruining it in order to give me something to do for an hour or so. I was just wondering if anyone had made one for this telescope before, if so do you have any tips/feedback?

Thanks in advance

[madjock72]

measure twice before you mark and cut. And finding velcro was a nightmare.

[Putaendo Patrick]

And also http://thatmarriedguy.com/diy-dew-shield/

 

[MarkyD]

8 hours ago, madjock72 said:

measure twice before you mark and cut. And finding velcro was a nightmare.

http://www.diy.com/departments/griptite-black-stick-on-tape-l25m/332564_BQ.prd

[cjdawson]

the rule that I know about dew shields is that to be effective they need to be at least 1.5x the diameter.  I have an 8" scope, so need a dew shield that is 12" long. You need extra length to allow for connection to the scope.

[madjock72]

Cheers MarkyD i went to wilkisons and got it for about 4 quid

But that tape would have looked better tbh.

[Bizibilder]

I have made dew shields out of camping (yoga) mats and used super glue to join the mat into a tube.  A few test pieces soon showed that the glued joint was far stronger than the mat itself.  So far the ones I made have lasted a few years but they are starting to look a bit tatty!.