Search found 3 matches
- Wed Feb 28, 2018 11:42 pm
- Forum: Solar Radio, Magnetometry and Spectroscopy
- Topic: Positive Meniscus Lens for Spectrohelioscope
- Replies: 2
- Views: 2745
Positive Meniscus Lens for Spectrohelioscope
Can anybody please advise where I might find a positive meniscus lens for a spectrohelioscope.
- Wed Sep 14, 2016 12:57 am
- Forum: Solar Scope Modifications
- Topic: Concept model of new 12" Solar Newton
- Replies: 51
- Views: 22299
Re: Concept model of new 12" Solar Newton
Great job!!! A few years ago I read David Groski's article and followed his instructions to desilver both the primary and secondary mirror on my 8" Newt. I've never been able to bring it to focus. I think I'm getting a ghost image from the back side of one or both the mirrors. Question. Anyone ...
- Sun Jul 20, 2014 4:57 pm
- Forum: This is SolarChat !!
- Topic: International SUN-Day at Lakeview Park in Lorain, Ohio
- Replies: 2
- Views: 1113
International SUN-Day at Lakeview Park in Lorain, Ohio
Check out my International SUN-Day Video here:
https://www.youtube.com/watch?v=CmhbrXS4S7o
https://www.youtube.com/watch?v=CmhbrXS4S7o