Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_celestial_motion.thumb.jpg.a9e9349c45f96ed7928eb32f1baf76ed.jpg

Sign in to follow this  
Skipper Billy

WANTED - artificial star

Recommended Posts

They sell small round magnets on E-Bay with a counter sunk hole in the centre for a screw, buy a small Ball Bearing and place it on the magnet stick the magnet on a nail knocked into a distance tree and when you shine a light at it, you will get your Star....

  • Like 1

Share this post


Link to post
Share on other sites
14 hours ago, Tinker1947 said:

They sell small round magnets on E-Bay with a counter sunk hole in the centre for a screw, buy a small Ball Bearing and place it on the magnet stick the magnet on a nail knocked into a distance tree and when you shine a light at it, you will get your Star....

Yup, the magnet idea is new to me but is a good one. I have always sprayed a lidless cardboard box matt black on the inside and glued the BB to it, but the BB itself is an optical classic and still used in professional workshops. I had a tour of Dany Cardoen's workshop in Puimichel last year and there was the illuminated ballbearing in all its glory!

Olly

Share this post


Link to post
Share on other sites
Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.