Post by johnm on Jun 4, 2014 19:44:18 GMT
While looking for information related to NLC I stumbeled on this site 'Project 3 PMC/NLC altitude, frequency and brightness changes related to changes in dynamics and chemical composition'.
There is some interesting reading on the project - you can find the page at link
I will link this to the NLC pages on mt website at John Murrell's website in due course.
Good Observing
There is some interesting reading on the project - you can find the page at link
I will link this to the NLC pages on mt website at John Murrell's website in due course.
Good Observing