A star finder that allows visible stars to be identified for any date and time for locations in the Northern Hemisphere. Compiled by astronomical experts, Storm Dunlop and Wil Tirion and approved by the astronomers of the Royal Observatory Greenwich.
Perfect for cleaning binocular lenses, telescopes, eyepieces and other optical items. The LensPen comes with a handy retractable dust removal brush and a special non-liquid cleaning element, designed to never dry out.
Earth is home to numerous species and is the only known planet in space that hosts the miracle of life. Using high-quality craftsmanship and augmented reality technology, EARTH AR Notebook presents the beauty of Earth at a microlevel.
These contrast-enhancing anodized aluminium, optical glass filters are designed to block out the wavelengths of light emitted by mercury-vapour light and other common causes of light pollution, whilst providing higher transmission at critical hydrogen-alpha and hydrogen-beta lines than competing filters.