Ok temps are starting to stablize it been 45 minute since bring the scope out and thes are the readings.
12:15 am Ambient: 13.25 Tube: 14.44 Mirror: 15.12
Last edited by Wombat_In_Space; 06-12-2005 at 02:26 AM.
Wow, you dropped the mirror 6 degrees in 1 hour! That's pretty impressive, what have you got hooked up to the scope??
regards, Bird
I have a feeling there was a error in the sensor for that starting temp as it dropped way to quick compared witht the other night, I think I might have a faulty 3.5mm phono plug because I lost the readdings from the mirror for about 20 mins or so in the 3 hour so it's off to Jay*** monday morning to by some new plugs.
What sensors are you using? I have used Dallas DS1820s for years (for domestic,but not astro related temperature measurement) and found them a wonderful device, but their accuracy not as good as claimed. I've had to run calibration tests on them and apply corrections in software. If you are using the 1820 series - are you running them in the high precision mode?
What sensors are you using? I have used Dallas DS1820s for years (for domestic,but not astro related temperature measurement) and found them a wonderful device, but their accuracy not as good as claimed. I've had to run calibration tests on them and apply corrections in software. If you are using the 1820 series - are you running them in the high precision mode?
I am using the Dallas DS18B20 sensor it is the newer version of the ones you are use to using, I am still fine tuning the software for the microcontoller to get it to do every thing I want it to do, I am running the sensord in high precision mode but I am looking to drop the back to a +/- 0.1°C reading setting as that is all I need accuracy wise.
