Solar Shades

Cardboard shades with specialized filters for viewing the Sun. Without proper filters, looking directly at the Sun will result to permanent eye damage.

I have just finished making a couple of solar shades for the upcoming solar eclipse on March 9, 2016. These shades use a Baader Neutral Density 5.0 solar filter, a specialized filter sold in most astronomy shops.

If you do not have access to a solar filter, you may use instead what is called a no. 14 welder’s glass, available in most local hardware stores.

No. 14 welder’s glass can be used as an improvised solar filter.

Note that it is not safe to use other grades of welder’s glass such as no. 10, 11, 12, and 13. Other improvised filters are also not safe. Use only either a commercially-available filter or a no. 14 welder’s glass. Using substitutes such as X-ray films, photo negatives, sunglasses, dark or smoked glass, or any other make-shift filters will not protect your eyes from the Sun’s harmful radiation.

Related links:
Solar Eclipse on March 9, 2016
Solar Eclipse Observation featured on GMA 7 (May 21, 2012)
Solar Filter

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For DIY astronomy projects useful for astrophotography, click here.
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© Anthony Urbano (Manila, Philippines)