Aerographers will know the struggle of capturing hours of exposure, and the result is nil due to moisture. Well, that is when we use dew heaters. It will help you to keep your lens to stay away from moisture. Preventing a few is very important, especially when you have plans for long sessions of imaging. Humidity is something that you need to take care of for a better result. Today, several dew heaters will help you to keep your lens safe from moisture.
What Are Dew Heaters?
As an astrograph, you will experience the dilemma of dew after capturing hours of imaging. Well, today, there are various solutions available to get rid of moisture. These tools are designed to prevent condensation in lenses. However, the means and method of preventing a few entirely depend on the size of your scope.
Causes Of Dew On A Telescope
Before you read any further, it is essential to know what causes moisture on telescopes. Well, when the surface of the camera lens of the telescope gets lower than the average temperature outside, moisture formation starts. This problem is vigorous during the night. The structure of dew at night is aggressive. Once your scope catches moisture, it is unable to capture good images. It gets washed out pictures.
To be more precise, the heat from the telescope radiates out to the cold temperature outside with the process of radiation. Once the warning temperature is radiated out in the sky, the telescope quickly cools down, and the temperature falls below the dew point. This, causing condensation on your camera lens.
Using A Dew Shield
Meanwhile, a dew shield help effectively to delay the entire process of dew formation. Especially on your optics, it will take time to form but will not stop completely. Hence, this reduces the vision of the sky from the telescope as the moisture is at its bay for a considerable amount of time.
As an add on benefit, a dew shield can quickly increase the image contrast. This can happen by merely acting as a baffle of light. A dew shield, on the other hand, can block stray gleams from entering the lens of a telescope. It will also help in protecting it from any dust or dirt getting accumulated around the glasses.
Keeping Your Telescopes And Lenses Dry
When you are setting night for astrophotography, you need to make sure that your telescope is wrapped with a dew heater strap. A dew heater controller powers this strap. Hence, it will help in adjusting the amount of heat getting generated. You can also put a dew heater band as it will help in cleaning out the moisture. Thus, you will not be affected by it and view the images at it’s best view.
There are some quality dew heaters available in the market at affordable rates. You can purchase your desired product as it suits your needs and preferences. However, power consumption can be a concern for most of us in the case of astrophotography. You need to choose an option that fulfills your needs and not use much power. Some products help to save up energy and not use more than you need. You can purchase them and save on power consumption as well.