Eclipse Goggles

**Graduate** · 10-03-2005, 07:51 PM

For the first time I saw on TV news channel,eclipse goggles, worn by people watching annular solar eclipse.What lens it is made of,seems to have mirror coating or reflective foil coating applied to it.What is it actually made of.

**rinselberg** · 10-04-2005, 01:35 AM

Just for the heck of it (I wanted to post) I did some Google research in response to Graduate's question (above).

Filters for safe viewing of a solar eclipse can be made of Shade Number 14 Welder's Glass, aluminized polyester (mylar) and/or "black polymer", which is a resin product with suspended particles of carbon. Anyone who is interested in direct solar observation, with or without a telesccope, should be well educated about the safety requirements before making any attempt. Here are some Web pages that I (as a layman and not any kind of Eye Care Professional) interpret as looking carefully researched and authoritative on the subject:

NASA TP 2001-209990: Eye Safety and Solar Eclipses
B. Ralph Chou, MSc, OD
Associate Professor, School of Optometry, University of Waterloo
Waterloo, Ontario, Canada N2L 3G1
http://umbra.nascom.nasa.gov/eclipse...ye-safety.html

"Observing Eclipses Safely" at MrEclipse.com
Copyright ©1999 by Mark Littmann, Ken Willcox and Fred Espenak
http://www.mreclipse.com/Totality/TotalityCh11.html

"Solar Eclipse Safety Page" at eclipseshades.com
Copyright © 2000 by Rainbow Symphony, Inc.
http://www.eclipseshades.com/safety.html

If a direct method of viewing an eclipse is chosen (using proper safety equipment), a good rule of thumb to follow should be to limit the amount of time spent looking at the sun. It is best to not look at the sun for more than 20 seconds at a time, with at least a 30 second break between viewings. This will help reduce the possibility of eye damage that may exist even while using proper safety equipment.

credit: Answers.com™
http://www.answers.com/topic/solar-eclipse-2

Here are some materials that have tempted people from time to time: NONE of these materials are safe to use as eye protection for viewing a solar eclipse, sunspots, planetary transit of the sun or any other kind of solar observation:

- Photographic film negatives (fully exposed photographic film)
- Sunglasses, including "cross polarizing" sunglasses
- Metallic packaging from potato chip bags or other metallized food wrapping
- Compact discs (audio CD, computer CD-ROM and like products)
- Smoked glass

The Eclipse kind of glasses from the eclipse of 1999 must absolutely not be used to watch the transit. The material used to build these glasses can be damaged or too old. These eclipse glasses are very cheap, it is recommended to buy a new pair.

credit: VENUS2004.ORG "Safety Precautions to observe the transit of Venus"
http://www.venus2004.org/sinformer/n...6.php?langue=2

Some Web pages with credible looking products for sale:

Eclipse Shades™
Safe Solar Eclipse Glasses, Viewers & Filters from Rainbow Symphony Inc.
http://www.eclipseshades.com/safety.html

"Solar Eclipse Glasses" from Astronomical Society of the Pacific
Constructed from double aluminized mylar and a scratch-resistant black polymer ...
http://www.astrosociety.org/cgi-loca...html?E+scstore

There is an array of products under the brand name "Thousand Oaks Optical", including solar filters for telescopes, binoculars and cameras and Black Polymer material for custom-building of handheld eclipse viewers.

Thousand Oaks Optical products at Hands on Optics online
Copyright 1997-2005 Hands on Optics
http://www.handsonoptics.com/slr_thousandoaks.html

Totality: The only kind of solar eclipse that can be observed safely with the naked eye is a TOTAL eclipse -- and only during the period of absolute totality, when the sun is entirely masked by the moon's shadow, and only the corona is visible.

credit: http://umbra.nascom.nasa.gov/eclipse...ye-safety.html
photo: Laupheim Public Observatory and Planetarium’s home page

rinselberg™ - good posts for your good times
http://www.optiboard.com/forums/show...3&postcount=16

**Graduate** · 10-04-2005, 02:23 PM

Originally Posted by rinselberg

Just for the heck of it (I wanted to post) I did some Google research in response to Graduate's question (above).

Filters for safe viewing of a solar eclipse can be made of Shade Number 14 Welder's Glass, aluminized polyester (mylar) and/or "black polymer", which is a resin product with suspended particles of carbon. Anyone who is interested in direct solar observation, with or without a telesccope, should be well educated about the safety requirements before making any attempt. Here are some Web pages that I (as a layman and not any kind of Eye Care Professional) interpret as looking carefully researched and authoritative on the subject:

NASA TP 2001-209990: Eye Safety and Solar Eclipses
B. Ralph Chou, MSc, OD
Associate Professor, School of Optometry, University of Waterloo
Waterloo, Ontario, Canada N2L 3G1
http://umbra.nascom.nasa.gov/eclipse...ye-safety.html

"Observing Eclipses Safely" at MrEclipse.com
Copyright ©1999 by Mark Littmann, Ken Willcox and Fred Espenak
http://www.mreclipse.com/Totality/TotalityCh11.html

"Solar Eclipse Safety Page" at eclipseshades.com
Copyright © 2000 by Rainbow Symphony, Inc.
http://www.eclipseshades.com/safety.html

credit: Answers.com™
http://www.answers.com/topic/solar-eclipse-2

Here are some materials that have tempted people from time to time: NONE of these materials are safe to use as eye protection for viewing a solar eclipse, sunspots, planetary transit of the sun or any other kind of solar observation:

- Photographic film negatives (fully exposed photographic film)
- Sunglasses, including "cross polarizing" sunglasses
- Metallic packaging from potato chip bags or other metallized food wrapping
- Compact discs (audio CD, computer CD-ROM and like products)
- Smoked glass
credit: VENUS2004.ORG "Safety Precautions to observe the transit of Venus"
http://www.venus2004.org/sinformer/n...6.php?langue=2

Some Web pages with credible looking products for sale:

Eclipse Shades™
Safe Solar Eclipse Glasses, Viewers & Filters from Rainbow Symphony Inc.
http://www.eclipseshades.com/safety.html

"Solar Eclipse Glasses" from Astronomical Society of the Pacific
Constructed from double aluminized mylar and a scratch-resistant black polymer ...
http://www.astrosociety.org/cgi-loca...html?E+scstore

There is an array of products under the brand name "Thousand Oaks Optical", including solar filters for telescopes, binoculars and cameras and Black Polymer material for custom-building of handheld eclipse viewers.

Thousand Oaks Optical products at Hands on Optics online
Copyright 1997-2005 Hands on Optics
http://www.handsonoptics.com/slr_thousandoaks.html

Totality: The only kind of solar eclipse that can be observed safely with the naked eye is a TOTAL eclipse -- and only during the period of absolute totality, when the sun is entirely masked by the moon's shadow, and only the corona is visible.

credit: http://umbra.nascom.nasa.gov/eclipse...ye-safety.html
photo: Laupheim Public Observatory and Planetarium’s home page

rinselberg - good posts for your good times
http://www.optiboard.com/forums/show...3&postcount=16

Rinselberg you are a great optiboard's info centre.Thank you:cheers: