Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

cheap+cheerful artificial star ?


blacksaltire
 Share

Recommended Posts

The BEST artificial star you can use?

Take a red laser pointer (few £), remove the collimation lens and you will have a safe point-like light source. Red laser diodes have an emitting area few micrometers wide, surely less tha any commercial artificial star that uses optical fibers or pinholes.

The copyright of this idea is of an italian amateur astronomer (not me :-D) on http://forum.astrofili.org/viewtopic.php?f=15&t=53433

ciao

dan

Edited by weega
Link to comment
Share on other sites

a laser diode without collimating lens is as safe as a red led.

Without lens it do not produce a collimated beam, it simply sends light all around in a light-cone wider than the light-cone of a led and almost with the same total power.

e.g.: http://uzzors2k.4hv.org/index.php?page=violetlaser

ciao

dan

Edited by weega
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.