TeleOpk is an application that performs calculations on the optical characteristics for a telescope when its is bound with a particular ocular lens, making easier for the astronomer amateur or professional to choose an equipment. Given the equipment characteristics, calculates: Angular field of view; Eyepiece magnification; Focal length (telescope); Exit pupil; Resolution (Dawes, Rayleight e pratical); Limiting stellar magnitude; Light gathering power. Developed for iPad 1 or 2. Avaliable in Portughese, Spanish, Italian, French, English, German, Japanese and Russian.
It’s easy to think that all you need to carry with you these days is a smartphone and you’re ready for anything. But some extended periods away from my desk have discovered four things that are ‘must-haves’ for the traveller.