Quote:
Originally Posted by peter_4059
Thanks Dennis - I've seen your bucket and would have done a similar thing only I couldn't find a big enough bucket for the Newt at the ota is 12" diameter. I'm planning to follow Baz's design and have now found some perspex - at Reverse Garbage. How do you power the LEDS?
|
Hi Peter
I ended up wiring the 6 LEDs in Series with a 120 Ohm Resistor. I use a 24V 1A regulated mains adapter, left over from my Tak mount which operates on either 24 or 12V.
I cut a circular disc from thin aluminium sheet and placed this at the bottom of the bucket after I had abraded the surface with an orbital sander. This acts as a diffuser and scatters the incident light à la
Lambertian Scattering (see link below).
http://www.ing.iac.es/Astronomy/obse...otes/tn108.pdf
WARNING: opens in a new Window. Use Right Click and save as to save a copy.
Cheers
Dennis