See the CNYO Brochure Archive Page for background more information.
Because these are still asked for/about – and because the cnyo.org website continues to suffer from WordPress-related aging that may make it less-and-less accessible as time progresses, the original brochures put together as hand-outs at hosted events and star parties have been embedded into the page below for your reading and downloading pleasure.
These two-page brochures were printed out double-sided, tri-folded into pamphlets, and handed out at lectures and observing sessions. The PDFs should print just fine with no cut-offs in any modern printer.
These include the following:
- A Guide For New Observers (original post, local PDF, local page)
- A Guide For Solar Observing (original post, local PDF, local page)
- A Guide For Lunar Observing (original post, local PDF, local page)
- How The Night Sky Moves (original post, local PDF, local page)
- A Guide To Meteor Showers (original post, local PDF, local page)
Original Post: www.cnyo.org/2013/06/18/cnyo-brochure-a-guide-for-solar-observing/
We’d like to thank the great solar photographer Alfred Tan for the use of his solar image in this brochure. For a regular feed of his stellar (pun intended) solar views from Singapore, we encourage you to subscribe to his twitter feed at: twitter.com/yltansg.
A Guide For Solar Observing
Solar Safety: Read Me First!
“NEVER Look At The Sun Through ANY Eyepiece Without Protection!”
Pre-Observing Observing Tips
“The Sun is a blindingly bright object all by itself – and your observing session has you constantly looking in its direction!”
Sun Cross Section – 697,000 km Radius
“Radiative Zone: 348,000 km thick, energy from the core is passed through as photons (light) – thousands of years for light to pass through it from the core!”
The Solar System To Scale
“The solar diameter in “planets” is listed.”
More Information About The Sun
“The Sun is the reason why we’re here!”
And Just Why Is The Sky Blue?
“At sunrise and sunset, most of the blue light has been scattered by air molecules, so more of the Sun’s longer wavelength light (red and orange) makes it to our eyes (“R”).”
What You’ll Observe On The Sun
“The savvy (or lucky) observer may see a plane (1), a satellite, a planet (“transit” of Venus (2) or Mercury), or the International Space Station (3).”
About The Sun (History & Future)
“The Sun is a spectral type G2V star in the Orion Arm (Orion Spur) of the Milky Way, some 25,000 light years from the Milky Way’s center and, on average, 8 light minutes away from Earth.”
What You’ll See Through Solar Filters
“All other filters work by picking out a single wavelength (shade of one color) from the entire visible spectrum (ROYGBIV – red, orange, etc.), allowing only that color to pass through to your eye."