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Category: Solar Filter


Images of the active region (AR) 2529 sunspot group on April 16, 2016, taken using a Sky-Watcher 4-in f/9 refractor fitted with a Baader Neutral Density (ND) 5.0 solar filter.

AR2529_Sunspot_April16_2016

Image of the active region (AR) 2529 sunspot group on April 16, 2016. This image was taken using a Sky-Watcher 4-in f/9 refractor fitted with a Baader Neutral Density (ND) 5.0 solar filter, Canon 1100D DSLR, 1/4000 sec exp, IS0 100. Quezon City, Philippines. Photo Credit: Anthony Urbano

For more images of sunspots, click here.

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

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solar_shades

Specialized shades for viewing the Sun during solar eclipses. 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. To learn more about the specialized safety filter I used in this solar shade and what other low-cost alternative can be used, click here.

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

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

Images of the active region (AR) 2192 sunspot group on October 26, 2014, taken using a Sky-Watcher 4-in f/9 refractor fitted with a Baader Neutral Density (ND) 5.0 solar filter.

Sunspot AR 2192_Oct26_2014_full_disc

Image of the active region (AR) 2192 sunspot group on October 26, 2014. This image was taken using a Sky-Watcher 4-in f/9 refractor fitted with a Baader Neutral Density (ND) 5.0 solar filter, Kenko NES mount, Canon 450D DSLR, 1/4000 sec exp, IS0 200. Quezon City, Philippines. Photo Credit: Anthony Urbano

Sunspot AR 2192_Oct26_2014

Image of the active region (AR) 2192 sunspot group on October 26, 2014. This image was taken using a Sky-Watcher 4-in f/9 refractor fitted with a Baader Neutral Density (ND) 5.0 solar filter, Kenko NES mount, Philips SPC900NC/00 web camera, UV-IR filter. Quezon City, Philippines. Photo Credit: Anthony Urbano

For more images of sunspots, click here.

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

Observing the sun requires a special type of protective filter called a solar filter. Such filters work by passing sunlight through specialized layer of metal, placed in between layers of glass or plastic film. Solar filters block more than 99.99% of sunlight, and must be placed on top of the telescope’s objective (on the main aperture of the telescope) to reduce the sunlight’s intensity before it gets focused by the telescope. Without a solar filter, sunlight’s intensity will be high enough to cause loss of vision and damage to equipment.

filter_solar

Observing and imaging the sun require a solar filter

To learn how to construct a mounting frame (also called a filter cell) for a solar filter, which will help protect the delicate film and allow safe viewing (and imaging) of the sun, click here.

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

This interview with GMA 7 regarding the May 21, 2012 Partial Solar Eclipse was aired on May 21, 2012 on national television.

Related links:
Lunar Eclipse Observation featured on TV 5 (October 8, 2014)
Solar Eclipse Photo featured on PTV 4 (January 24, 2013)
Lunar Eclipse Photo featured on PTV 4 (January 23, 2013)
Solar Eclipse Observation featured on GMA 7 (May 21, 2012)
Lunar Eclipse Observation featured on ABS-CBN (June 16, 2011)

For featured photos, click here.
For tutorials on how to get started with astrophotography, click here.
For DIY astronomy projects useful for astrophotography, click here.
To subscribe to this site, click here.

© Anthony Urbano (Manila, Philippines)

Partial Eclipse at sunrise (5:52 am local time) taken from Quezon City, Philippines. Sky-Watcher 4-in f/9 refractor, Baader 5.0 ND solar filter, Kenko NES mount, Canon 450D DSLR, 6/10 sec exp, IS0 1600. Photo Credit: Anthony Urbano. For more images of the May 21, 2012 solar eclipse, click here.

Related links:
Lunar Eclipse Observation featured on TV 5 (October 8, 2014)
Solar Eclipse Photo featured on PTV 4 (January 24, 2013)
Lunar Eclipse Photo featured on PTV 4 (January 23, 2013)
Solar Eclipse Observation featured on GMA 7 (May 21, 2012)
Lunar Eclipse Observation featured on ABS-CBN (June 16, 2011)

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