The original Baader solar filters of these spectacles with a filter factor of 100,000 are CE certified and offer perfect protection when observing the sun.

 The sun has been observed with a telescope almost since the telescope’s invention, but it can be dangerous. Only by using a strong filter is the sun’s light dimmed enough to prevent eye damage. Today there are many suitable solar filters, for example the AstroSolar-Sun filter foil from AstroMedia.

It is well known that the iPhone 4/S takes excellent photographs, but also that real close-ups, not to mention macro photography, are not possible, because the iPhone cannot focus at very short distances.
This is where the Macro Lens Adapter kit comes in. With its 25 x magnification, you can get as close as 2 cm to an object. This comes close to transforming your iPhone into a picture taking microscope.

Die-cut cardboard parts for the casing,
the lens mount, and the storage box and bracket.
1 precision lens focus +30 mm made from optical grade

These amazing Reversing Goggles allow you to view the world upside down! 
The plastic goggles hold two Dove plexiglass prisms, which invert the image. Alternatively, you can adjust the prisms in order to create right-left inversion. 
Since the time of Leonardo da Vinci (1452 - 1519) people have wondered about the fact that the images of the world that fall on our retina are upside down, yet we see the world the right way up. Back in the 1890s the American scientist George Stratton conducted an experiment to see what would happen if he viewed the world through an inverting prism. He found that after 4 days, his brain started to compensate, and he could see the world the right way up again. 
We are not suggesting that you recreate George Stratton's experiment. However, it is fascinating to wear the upside down googles and try to shake hands with someone, pick up an object, pour water from a jug into a glass, try and write, or find your way around (with someone else there to guide you of course). 
When we view the world normally, our brain reverses the images on our retina in both the up-down and right-left directions. These prisms reverse the up-down direction only. However if you rotate them by 90 degrees, they will then reverse left-right instead. 
The kit includes the lightweight, ventilated plastic housing, two prism holders in MDF (medium density fibreboard), two high quality Dove prisms in lightweight plexiglass giving a 35x20mm view, plus a small file for smoothing edges. 
A small amount of assembly is required. You will need a protractor in order to measure a right angle and some 2 part adhesive which hardens quickly. Optionally, you can apply some black paint to the prism surfaces which are not needed, which will improve the picture quality slightly.