After several cloudy and raining nights I could realise my first test with the 34 watts dew heater prototype.
To test the dew heater in an extreme condition I slew the telescope to the zenith during 2 hours with the dew heater turned on. After these two hours I was really satisfied to see the corrector plate with no dew. It seemed that it was a success. Unfortunately I could not see any dew in the objects around the telescope neither. I concluded this night was not good enough for test because there was not enough dew.
The next observation session was the right one. As shown in the right pictures the test was not a complete success because only about 66% of the corrector plate were without dew. To remove the rest of the dew I just covered the telescope during half an hour. But around two hours later I had removed it the dew came back again.
The next astronomy session was not good neither and I stated the 34 watts were not enough for the size of such a telescope. So I decided to give more power to the dew heater and planed to build a 52 watts design.