Transit of Venus

Monday, June 04, 2012

A couple of friends asked me to put together some resources 
about the Transit of Venus...
I have decided to make a post about everything I have found to be useful
on the Transit of Venus that will happen on June 5 and 6.

You can check where the planets are at this very moment,
just click here

 On June 5 and 6 Venus will pass between us and the Sun.

This is the last time it will happen in the 21th century.
The next time Venus passes in front of the Sun will be in 2117.

In our life time we had the chance to see it in 2004 and we can still catch it tomorrow!

What is the Transit of Venus?

When and where?

 (click to enlarge the maps)

How to view it safely (READ THIS!)
Safe techniques for observing the Sun (READ THIS!)

"Acceptable filters for unaided visual solar observations include aluminized Mylar.  Some astronomy dealers carry Mylar filter material specially designed for solar observing. Also acceptable is shade 13 or 14 arc-welder's glass, which is available for just a few of dollars at welding supply shops. 
Unacceptable filters include sunglasses, old color film negatives, photographic neutral-density filters, and polarizing filters. Although these materials have very low visible-light transmittance levels, they transmit an unacceptably high level of near-infrared radiation that can cause a thermal retinal burn. The fact that the sun appears dim, or that you feel no discomfort when looking at the sun through the filter, is no guarantee that your eyes are safe. "

Photographing the Sun
How to photograph the Transit of Venus
How to Photograph the Sun
How to photograph Solar Eclipses helps with learning to photograph the Sun

Always use a proper filter when observing or photographing the sun. 
Regular sunglasses and photographic polarizing or neutral-density (ND) filters are not safe for use on the sun, you can burn your eyes and your camera'simage sensor!

#14 Welder's glass (but you will see it all in green)
 and eclipse glasses are best for people
who won't photograph the Sun.

If you plan on taking pictures you need a Solar filter,
such as a Baader, Thousand Oaks, Meade

I will be using a Meade Solar Filter film/sheet that I have cut
and placed on top of a UV filter for my telephoto lens.
I removed the ring that kept the glass in the filter 
and added the film on it and locked it in place.

Then all I have to do is put the filter on my lens as usual and take a picture.
An Mylar filter like the Meade film I am using takes a picture of the 
Sun like this: 

I was testing the filter and didn't use a tripod, so I shake.
The photo will have a much better quality when you use a tripod and
a remote shutter trigger.

Web casts in case your region isn't in the view zone.

Extra Solar Links
Space Weather
Solar Alerts


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