ICEINSPACE
Most Read Articles
Moon Phase
CURRENT MOON Waxing Gibbous
96.5%
The Sun Now
Time Zones
Sydney*
2:09 pm
Perth
11:09 am
Auckland*
4:09 pm
New York
10:09 pm
Paris
4:09 am
GMT
3:09 am




Go Back   IceInSpace > IceTrade Classifieds > IceTrade Archives

 
 
Thread Tools Rate Thread
  #1  
Old 02-12-2018, 11:59 AM
MortonH's Avatar
MortonH
Deprived of starlight

MortonH is online now
 
Join Date: Nov 2006
Location: Sydney
Posts: 3,093
Dew shield for 5" Mak/SCT

Need a flexible dew shield for a Skywatcher 127mm Mak-Cass and/or a C5.

Let me know if you have a spare one!

Last edited by MortonH; 14-12-2018 at 07:18 PM.
  #2  
Old 02-12-2018, 05:13 PM
Wavytone (Nick)
BigBanger

Wavytone is online now
 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 3,476
Morton its not worth the postage.

Head to Supercheap Auto and buy a sunscreen for a car, these come with a velcro strap. 10 minutes with scissors to modify to fit.
  #3  
Old 02-12-2018, 07:52 PM
MortonH's Avatar
MortonH
Deprived of starlight

MortonH is online now
 
Join Date: Nov 2006
Location: Sydney
Posts: 3,093
Quote:
Originally Posted by Wavytone View Post
Morton its not worth the postage.

Head to Supercheap Auto and buy a sunscreen for a car, these come with a velcro strap. 10 minutes with scissors to modify to fit.



Yeah, thought I'd try on the off chance that someone local has a spare. If not it's DIY time.
  #4  
Old 02-12-2018, 09:09 PM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,339
Morton, the DIY option is the better choice. Reason being you can make the dewshield to also extend the whole length of the OTA as this will help insulate the OTA there by eliminating the internal tube currents, and at the same time e tend the dew-free period fpr the corrector plate.

An off the shelf dewshield won't do thi s for you.

The car sunscreen material Wavy suggests is blooming brilliant for this! It is a very good insulator, perfect for this task

Alex.
  #5  
Old 02-12-2018, 09:49 PM
MortonH's Avatar
MortonH
Deprived of starlight

MortonH is online now
 
Join Date: Nov 2006
Location: Sydney
Posts: 3,093
Quote:
Originally Posted by mental4astro View Post
Morton, the DIY option is the better choice. Reason being you can make the dewshield to also extend the whole length of the OTA as this will help insulate the OTA there by eliminating the internal tube currents, and at the same time e tend the dew-free period fpr the corrector plate.

An off the shelf dewshield won't do thi s for you.

The car sunscreen material Wavy suggests is blooming brilliant for this! It is a very good insulator, perfect for this task

Alex.
I'd have to spray it black on the inside though, right?
  #6  
Old 03-12-2018, 08:59 AM
mental4astro's Avatar
mental4astro (Alexander)
kids+wife+scopes=happyman

mental4astro is offline
 
Join Date: Jun 2008
Location: sydney, australia
Posts: 4,339
Morton, no, no spray. Paint of any type most likely won't stick very well to that mat, and if it doesn't it will flake off and make a mess.

You can get a roll of black felt from Bunnings, and apply it to the length of the dewshield that extends over the corrector plate.

Below is a picture of the Corflute dewshield I made from my Mak, showing the black felt. It extends only maybe 20mm or 30mm beyond the rim of the corrector plate rim.

All you then need is a few Velcro tabs down the length of the cut-to-size-and-shape mat to fix the new dewshield in place You can by black Velcro tabs from Bunnings too, or a $2 shop. The finished dewshield you can just roll up to store.

Alex.
Attached Thumbnails
Click for full-size image (Dewshield.jpg)
144.8 KB9 views
 

Bookmarks

Thread Tools
Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off

Forum Jump


All times are GMT +10. The time is now 01:09 PM.

Powered by vBulletin Version 3.8.7 | Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Advertisement
NexDome Observatories
Advertisement
Bintel
Advertisement
Lunatico Astronomical
Advertisement
SkyWatcher WiFi Adaptor
Advertisement
FLI Cameras and Imaging Accessories
Advertisement
OzScopes Authorised Dealer
Advertisement
SkyWatcher 2018 Catalogue
Advertisement
Interest Free Finance
Advertisement
Astronomy and Electronics Centre
Advertisement