To dew or not to dew and what to dew about it...

Get your dewing in place for the Free State Star Party 3-5 June 2016

 Image sourced from Deep-sky watch

Some "How dew you dew?"  web pages:
Dealing With Dew - By: Alan MacRobert | July 28, 2006 - Sky and telescope
Don't "Dew" This With Your Telescope… April 29, 2010 by Brian Ventrudo - One Minute Astronomer
Fighting Dew  - Telecope.com
Dealing With Dew
Dew Prevention
Telescope and dewing - Astro Tom

Get practical

• Home Made Dew Control System for a Telescope 
• Dew Heater Control and the Arduino

• Dew Busters Controls
  - Resistor heaters
  - Nichrome heaters
  - Star Diagonal heater

• Everybody's Do-It-Yourself Dew Heater - by Alan M. MacRobert
• Making Dew Heaters
• Build a Dew Heater from Resistors
• Homemade Heater Strips
•  Really easy to make arduino dew heater controller
• Dew Heaters for Night Sky Photograph
• Automatic Heater Control  for the Prevention of Dew  (Pdf)
• Dew Shields for 20x80 Triplet Binoculars
• A Portable, Dew-Proof, Astronomy Hutch