Gregg 10" f8 Newtonian 12.5" F 4.5 Cave Astrola Unitron 114 w unihex , Unitron 128, Tasco 7te, Tasco 7te-5,Criterion 4000
Homemade 'scopes 8"f/7,6" f/5", 6"f/4, 4.25" Schiefspiegler,60mm Coronagraph,60mm H-alpha system, 4.25" White-light Solar Newtonian,solar spectroscope, 4" f/12, 4.5" f/16 & 6" f/12 Schupmann Medial refractors, 4" Celestar, 19 Stellafane awards 9 in optics Engineering = Taking what you have and making what you need.
1st Caveman Award!Maynard Clark 8" f/8The Horsetrail Cave 12.5" f/7.51975 Cave 8" f/7 Lightweight Deluxe1972 Cave 8" f/4.5 RFT DeluxeCriterion RV-6Logitech HD C615 Webcam for Imaging
Orange Tube C8, Tasco 7te-5, 4" Criterion Dynascope, 60mm Towa Jason 313 Nikon Action Extreme & Pentax WPii Binoculars iPod Touch loaded with astronomy software At my club, everything one could want up to 18"
Quote: I looked up the 1970 Sky and Tel article and from it I can see that the Criterion unit was clearly assembled wrong ! A couple of resistors and caps that are part of the flip flop that isn't working were swapped in their positions. No wonder why it won't work.
Celestron C8 Registry
"If you want to succeed in the world, you don't have to be much cleverer than other people. You just have to be one day earlier.” -- Leo Szilard
Quote:Do you think that was a day one error? It must never have worked. Or had someone serviced it before you and put the parts back wrong?
a schematic of the 555 based version is on the yahoo Cave Telescopes Group in the folders section.
Quote:It really helps when the parts are in the correct place in the circuit.