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Making your own dew shield

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13 replies to this topic

#1
athornett

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Why pay £100 for a dew shield when so easy to make your own?

There are many ways of doing it but here is what I did - makes a rigid lightweight customised dew shield

http://www.atm.me.uk...-13_-andy-.html

Andy

#2
JamesF

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Looks good to me :) My favourite home-made one however is this :)

http://stargazerslou...den-dew-shield/

James

Skywatcher ST80, ST102, ST120, ED80, Skymax 127, MN190, 200P, Celestron C9.25, Coronado PST, several pairs of binoculars, 10" dob
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Lunar 100: 41


#3
baggywrinkle

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Made mine from a camping mat and double sided velcro..A$4

Celestron Advanced VX 9.25, Skywatcher ED80, SW ST120 & AZ4,  iOptron Smart EQ Mount. Nano-Tracker, Bushnell 16x50 binos, Star Tracker 15 x 70 binos
Various eye pieces, Takahashi 5 &10 mm LE's, Williams Optics 20mm bino viewer, Celestron Omni 40 & 15mm, Celestron X-Cel 9mm, Celestron 8-24mm Zoom. Baader Hyperion 25mm.
Canon 650D (mod'd), Canon 400D DSLR (unmod'd), 800mm Samyang Catadioptic f8 lens, NextImage 5
Baggywrinkle: A device made from teased cordage used to prevent rigging chaffing the sails..My image shows the reactor control panels from  HMSm Conqueor, now a museum piece like me. Sat on them for 6 years!


#4
athornett

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James, Thanks for the link to http://stargazerslou...den-dew-shield/
I like it too! I wonder what the weight is, being made out of veneered ply? Certainly for my dobs, weight is very important - every kg at top has to be counter-balanced with 4 or 5kg at bottom (due to differences in distance from fulcrum) - I have a large collection of various magnetic weights!! Actually on that point, I have found the magnetic strips you buy from Wilkos to put tools on wall in garage make great magnetic weights - sold in packs of three of different sizes - just like the scales in the kitchen can choose combinations to balance most things. Only problem is I now need 2 packs, what with Telrad, 2 inch Explore Scientific eyepeices (weigh a ton) and dew shield on top!
Andy

#5
athornett

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Hi Baggy (or Wrinkle?)
I think you are probably right! Keep it simple, light and cheap.
Andy

#6
JamesF

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I'm finding similar problems with my own dob as I've moved to the more expensive end of the market with eyepieces. I am going to have to start thinking about counterweights soon.

James

Skywatcher ST80, ST102, ST120, ED80, Skymax 127, MN190, 200P, Celestron C9.25, Coronado PST, several pairs of binoculars, 10" dob
EQ1, EQ3-2, AZ3, HEQ5 Pro, NEQ6 Pro
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#7
athornett

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I am already up to 10kg+ counter weights some times on my Dob!
Andy

#8
baggywrinkle

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A pic of my one on the 6SE.

I found my ED80 hardly ever dewed up, but that could well change when I am back in the UK.
Dew Shield

Celestron Advanced VX 9.25, Skywatcher ED80, SW ST120 & AZ4,  iOptron Smart EQ Mount. Nano-Tracker, Bushnell 16x50 binos, Star Tracker 15 x 70 binos
Various eye pieces, Takahashi 5 &10 mm LE's, Williams Optics 20mm bino viewer, Celestron Omni 40 & 15mm, Celestron X-Cel 9mm, Celestron 8-24mm Zoom. Baader Hyperion 25mm.
Canon 650D (mod'd), Canon 400D DSLR (unmod'd), 800mm Samyang Catadioptic f8 lens, NextImage 5
Baggywrinkle: A device made from teased cordage used to prevent rigging chaffing the sails..My image shows the reactor control panels from  HMSm Conqueor, now a museum piece like me. Sat on them for 6 years!


#9
athornett

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Very good - do you use Velcro?
Andy

#10
IanL

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Everyone knows you should use a yoga mat not a camping mat. Helps you be more at one with the universe.

Seriously though, they sell foam mats in black if you're buying from new. They're still a bit on the shiny side generally though and have had reflection problems with them in the past so probably worth getting some flocking material at the same time.
  • Wyvern likes this
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#11
Wyvern

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...."yoga mat, not a camping mat"..... oh how we laughed on the way to Casualty!!!.... One wonders if your observatory is set up per Feng Shui principles! :icon_biggrin:

Optical family of 10" f4.2 Dob, 10" Meade S/Cass, 120mm SkyWatcher Refractor, Coronado PST and various binoculars. Radio family consisting of working Graves Meteor detector, 20MHz  Jove loop antenna, VLF Solar receiver and "skydish" Solar receiver. Vanishing garden space.... but understanding Wife!


#12
tich

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I've made one using a camping mat for my 250P last week, I also did the same for my 200P & stuck some velcro on both.

Posted Image

Posted Image

Posted Image

Skywatcher ED80, Skywatcher 250P, Skywatcher ST80, Celestron C6 SCT .Zenith 10x50 Bins, NEQ6 Pro, EQ5, Various Baader Hyperion EP's & Hyperion Zoom Mk II.Flashed Philips SPC 880 Webcam, QHY5L-II Colour Camera, Canon 1000D & Modded Canon 1000D

Central Midlands Stargazers


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#13
baggywrinkle

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Very good - do you use Velcro?
Andy


I used velcro tabs (3M) that are used for picture hanging.
Hangers 1

Celestron Advanced VX 9.25, Skywatcher ED80, SW ST120 & AZ4,  iOptron Smart EQ Mount. Nano-Tracker, Bushnell 16x50 binos, Star Tracker 15 x 70 binos
Various eye pieces, Takahashi 5 &10 mm LE's, Williams Optics 20mm bino viewer, Celestron Omni 40 & 15mm, Celestron X-Cel 9mm, Celestron 8-24mm Zoom. Baader Hyperion 25mm.
Canon 650D (mod'd), Canon 400D DSLR (unmod'd), 800mm Samyang Catadioptic f8 lens, NextImage 5
Baggywrinkle: A device made from teased cordage used to prevent rigging chaffing the sails..My image shows the reactor control panels from  HMSm Conqueor, now a museum piece like me. Sat on them for 6 years!


#14
JG777

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Mmmn time to destroy an old camping mat.....

John
Bracknell Astronomy Club:  http://bracknellastr....moonfruit.com/

2 Fracs, a Mak, a Newt  and Bins. HEQ5 PRO and AZ4.. A box of various EPs





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