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... Home Gallery Astrophotography Deep Sky Images by Joe DiNapoli . ... Deep Sky Images by Joe DiNapoli . ... Deep Sky Gallery by Ed Fox . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . Observing Resources for Amateur Astronomers - Part 2: Intermediate Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... Members . ... The ATM's of Boston was founded in 1934 by a group of persons interested in assisting others in the art of optical polishing the craft of telescope making, and to learn together about the science of astronomy and the use of astronomical instruments. ... Mr. Jones introduced the club to Dr. Harlow Shapley at Harvard College Observatory. ... Regular shop activities resumed with the help of these "professional amateurs" and the club grew to 180 members. ... Club Newsletters . ...

... ARTICLE: Entdecker des Sonnensystems . ... Die folgende Vortragsnotiz fasst die wichtigsten Konzepte und wissenschaftlichen Entdeckungen (in bezug auf das Sonnensystem) zusammen, die im Laufe der letzten fЭnfhundert Jahren ausgearbeitet und Эberliefert wurden. ... Die eigentliche Abhandlung wird durch zahlreiche Fussnoten ergДnzt, die sich vor allem an jЭngere Leser und Neulinge auf dem Gebiet der Astronomie richten, sowie durch einen mathematischen Anhang im Anschluss an den Hauptteil abgerundet. ...

... Observatory . ... THE HISTORY OF AAAP . ... After introductory remarks by Robert Sanders, founder of the Association, it was moved that the name of the organization be Amateur Astronomers Association of Princeton. ... 2/72 First issue of Sidereal Times, so named by Editor Roxanne Tobin. ... 5/72 Election of officers: Norman Sperling, Director; John Church, Assist. ... Sidereal Times, John gives the following report: . ... Sidereal Times.) ... Amateur Astronomers Association of Princeton Т? 2015. ...

... Jim Gunn circulated a CAD drawing (MIRCELL.DXF) on 7/24/98 showing the 2.5-m primary mirror and the locations of actuators (Figure 1) proposed to control the astigmatism of the primary mirror surface. Two rings of 12 actuators at two different radii are proposed. ... Table 1: Surface error fit parameters for astigmatism forces applied to the outer ring of Figure 1. prim94 . ... Table 2: Surface error fit parameters for astigmatism forces applied to the inner ring of Figure 1. prim95 . ...

Towards celestial sources above 1 THz with a heterodyne receiver based on a hot-electron bolometer mixer Sergey Ryabchun, Ivan Tretyakov, Matvey Finkel, Natalia Kaurova, Boris Voronov and Gregory Gol'tsman HOT-ELECTRON BOLOMETER (HEB) MIXER Scient ific and Educatio nal Radiophysics Center Mo scow State Pedago gical University Mo scow, Russia FIRST GROUND-BASED OBSERVATION WITH HEB MIXERS BEYOND 1 THz Submillimeter Telescope ...