Verwendung eines astronomischen Teleskops: Ein Leitfaden für Anfänger zur Beobachtung des Kosmos
37,27 €
Unscrambling the image is the observer"s job. The most perfect image will be wasted if the observer does not put it to good use, and the act of observing is a highly personal one. But the differences outlined above do not refer to the clarity, of vision.
Jetzt bei Ebay:
