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the nearest known planetary nebula to Earth
Whatever size telescope you have
Paraxial ray tracing
it was practically the only book of its genre
geographic latitude and longitude of the point of interest
Interstellarum Deep Sky Atlas – Desk Edition Annals of the Deep Sky the nearest known planetary nebulaAuthors: Ronald Stoyan and Stephan Schurig An innovative, practical tool for observers of all experience levels, the interstellarum Deep Sky Atlas heralds a new era of celestial cartography. Objects are shown according to their actual visibility under a moderately dark sky, in the following four classes: Visible in 4 inch telescopes Visible in 8 inch telescopes Visible in 12 inch telescopes Not visible in 12 inch telescopes Within each visibility
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