hey!
So i'm about to order a 15mw laboratory laser to mount on my telescope as a AF focus for my Camera. I've run into big problems with getting a perfect manual focus on my compact SLR camera and my friends 5mw laser was rather good at using as a AF assist lamp (just holding them side by side) so I'm thinking a considerably larger laser will easily function as my Galactic AF lamp for my newtonian reflector ^_^
Hes an example of my problem from last week out west of the city.
It's just...absolutely impossible to focus on something you can't see, not through a finder, and certainly not through a 3" LCD screen.
I can use a bright star like this and dial it in manual focus, But anywhere by itself i'm stuck practically guessing what the focus point should be =|
It goes great on the moon, But farther out objects are very hard, and nebula are absolutely out of the question, especially long exposures where focus is extremely important.
Anyways my whole problem, is i need some ideas for the power supply, and ideally i'd like to use a resistor in tandem with a higher voltage battery pack so i could leave it on for longer periods of time. but... Ohm's laws kinda escape me as math has never been a good subject of mine. =p
Anyways I hope you guys can help me, You've always came up with kick ass ideas in the past ^_^
(lol taken at 4am in the morning @ a extremely high iso)