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SKYWATCHER
Available Upon Request
This category includes products which are not kept in stock and for some reasons -which don’t depend on our company- can’t be available in less than 14 days. Specifically, this category includes new products thar are pre-advertised by manufacturers, however they are not available in Greece yet. You can pre-order these items with a special preferential price. If the estimated arrival date of this product is already known, then the estimated date will be written above the indication “AVAILABLE UPON REQUEST”.
Objective solar filter - with Baader solar filter foil, for 250 mm telescopes
Solar filters are mounted in front of the telescope and reduce solar radiation to safe levels and suitable for direct observation of the sun.
Solar filters are equipped the safe and renown AstroSolar filter foil by Baader Planetarium. The filter foil's quality is superior to most glass solar filters making the image quality sharper and more contrasty than standard mylar and polymer foils. The sun is depicted in neutral white color and with a resolution that's only limited by the seeing conditions and the physical characteristics of your telescope.
Safety:
Celestron Solar Filters with Baader AstroSolar foil provide full protection agains harmful UV and infrared rays. UV is completely absorbed, rated as ND-5, which means that the film allows passage of 1/100.000 percentage of visible light (.001%) and thermal radiation is reflected by 99.999%. The amount of light that enters the telescope is equal to the brightness of the moon.
Glass filters can break or suffer fine spots with high transmission letting UV and IR pass because they are mostly coated at only one side. The Baader foil is coated on both sides offering double security. And what is more, the foil offers some flexibility and high resistance against ripping. Breaking is absolutely impossible. The cell is very lightweight and made of weather proof ABS plastic. As long as the proper size is chosen, optimal fit to the telescope is guaranteed.
All orders we receive until 15:00 concerning products in our warehouse, processed on the same day
Well-trained scientific and technical personnel are available to you at any time, to solve the questions and concerns about your equipment.
If you are not satisfied with the product you received, you can return it within 14 days of receipt.
Experience you can trust. Planetarium of Thessaloniki is the largest supplier of astronomy goods in the Balkans
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