|A Chance for Tonight or Tomorrow Morning?|
|The Astro Cat, Astro Table, and the Astro Chair|
The humidity is expected to be high tonight. We had over 4 inches of rain last week and the ground is still saturated.
This pretty much guarantees that dew will form on the corrector plate of the Cat if precautions are not taken. The corrector plate is 11 inches of glass exposed to the sky, just begging for dew to form and end any hopes of seeing anything.
|WTF? Philips head screws for collimation?|
What this means to me is that I needed to finish the prototype of my dew heater controller and get it mounted to the scope and connected to the dew strap. That is what I spent this morning doing.
I stuffed the controller into its box and bolted it closed. Why is it that the hardest thing about any project is getting it to fit neatly into a box? And why are project boxes so expensive...
Anyway, the dew controller is in its box and mounted to one of the scope's mounting arms. I don't like how its mounted, but it's good enough for now.
|A few zip ties needed and we are good, right?|
Here is an image of my DIY dew strap. The value and curse of making my own dew strap is that I now have a lifetime supply of leftover nichrome wire and Kapton tape.
|Red wire, power. Yellow wire, temperature sensor.|
Where does the power come from? Two 11 Amp-hour Talent cells, of course.
Very interesting! I hope you had a good viewing night and that the dew controller worked well.ReplyDelete