Hi Bob,
Do you mean these filaments?
OrionBar filaments.JPG
Hi Bob,
Do you mean these filaments?
OrionBar filaments.JPG
Howard
30-inch f/2.7 alt-az Newtonian
https://sites.google.com/site/howardbanichhomepage/
https://sites.google.com/site/sprays...pemirrors/home
Contributing Editor, Sky & Telescope magazine