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Dew Control

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#1 Biglol

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Posted 03 December 2020 - 11:59 AM

I was having a lot of trouble with Dew so i wrapped a single electric blanket around my Celestron 9.25 tube and made a leather cover for it to keep the heat in ... I've tested over two nights and it seems to work.

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#2 Dynan

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Posted 03 December 2020 - 12:25 PM

Are tube currents a problem? Some places have two layers. Won't this heat unevenly?

 

I guess with a low enough setting it might not bother anything.



#3 robbieg147

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Posted 05 December 2020 - 09:17 AM

Will this be way too warm? you only need to get just above ambient?


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#4 Dynan

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Posted 05 December 2020 - 12:20 PM

Just seems like overkill. Hey! Give it a try. If it doesn't mess with your images, good deal!

 

There are ways of imaging tube currents. I believe it's the same way you check collimation with a star out of focus. Somebody may be able to be more specific about this method of checking tube currents.



#5 Biglol

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Posted 14 December 2020 - 12:45 PM

Hi People ... Ive used the new Dew shield 4 times now and great success so far ... i will keep monitoring it and let you know how its going. 


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#6 alphatripleplus

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Posted 16 December 2020 - 03:25 PM

Interesting. I recently started to use a double layer of Reflectix around my C8 to slow down cooling, in combination with a dew heater. What is the power output of the  electric blanket?



#7 Biglol

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Posted 17 December 2020 - 11:58 AM

Interesting. I recently started to use a double layer of Reflectix around my C8 to slow down cooling, in combination with a dew heater. What is the power output of the  electric blanket?

I believe its around 15 and 115 watts Depending on what setting you have it on ....On a plus side I've had a lot of success ... im super happy.


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#8 alphatripleplus

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Posted 17 December 2020 - 02:48 PM

15W -115W sounds like you have a lot of control on the output, which is a good thing.


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