The Second U.S. Naval Observatory CCD Astrograph Catalog ( UCAC2 ) Table of Contents 1) Introduction 2) Summary of the Project a) Observations and Instrumentation b) Reductions of UCAC Observations c) Computation of Proper Motions 3) Properties of the Catalog and Important Notes For the User a) Sky Coverage b) Completeness c) Positions, Proper Motions and Error Calculations d) UCAC2 Magnitudes e) 2MASS Photometry f) Non-stellar ... All stars in the UCAC2 have proper motions. ...

... Maps of six sources (0420+022, 0420-014, 1308+326, 1345+125, 1803+784, and DA 193) obtained with milliarcsecond resolution are presented and discussed, together with their broadband (1­22 GHz) spectra obtained on the RATAN­600 radio telescope at epochs close to those of the VLBI observations. ... The image (Fig. 5) shows that the source structure at 18 cm is compact, consisting of a VLBI core and two jet components, with the outer component lying 5 mas (30 pc) to the northwest of the core ( = 54 ). ...

... Our first meeting of the year will be on Tuesday, September 8th. ... next page) Page 2 Amateur Astronomers Association of Princeton Newsletter Revenue and Expenses General Operations Actual Ordinary Income /Expense Income Contribution Income Member Dues Outreach Contributions Sale of Equipment Sales of AAAP Astro Items StarQuest Attendance Total Income Expense Speaker Honorarium Astronomy Calendars Books and Publications Business License Fees Contribution Expense Dues and ...

The paper presents the 'Neptune-ME' information display system (IDS) as a spaceman console (SC) of the descent module of the 'Soyuz -TMA' piloted transport spaceship, and the integrated console (IC) of manual control loop for module equipment in the Russian segment of the 'Alpha' international space station. ... to control spaceship systems; . ... An integrated control console (ICC) which is hardware and software compatible with a IBM PC, is suggested as a basic console for the manual control loop. ...

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... Multiexposition 34 images Sun 1/1000 sec f/22 and 1 image background. ... It shows position of the Sun on the sky in the same time of a day during one year. Analemma - a trace of the annual movement of the Sun on the sky - is well known among experts of sun-dials and old Earth's globes as a diagram of change of seasons and an equation of time. ... Previously, the position of the Sun on the sky was calculated with computer as well as optimal moments of time for taking each of the exposures. ...