... HST . Using multiple FP-POS positions at new COS Lifetime Location. ... HST Overview . ... To minimize such local degradation at the new COS lifetime position and maximize COS FUV data quality, proposers are strongly encouraged to use all four FP-POS positions (FP-POS=ALL) at any given CENWAVE when planning their observations in Cycle 20 as well. ... STScI will keep monitoring the ongoing and planned usage of the different COS CENWAVE and FP-POS positions at the new COS lifetime position. ...

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• Examples and General Advice
• Apertures
• Observing with Linear Ramp Filters

... Observing . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Problems posed by massive stars . ... These questions were at least part of the motivation when CУЕssio Barbosa of Brazil's University of SУ?o Paulo and Donald Figer of the Space Telescope Science Institute in Baltimore surveyed observers and theorists to see what they believed were the most pressing problems concerning massive stars. ... Get instant access to subscriber content on Astronomy.com! ...

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• Astronomy Magazine - Interactive Star Charts, Planets, Meteors, Comets,
• Working with color | Astronomy.com
• Great targets await lunar observers | Astronomy.com

... Advises . Contact Advises . As an advise for amateurs we would like to underline: if it's possible, try to observe 3 asteroid positions per night and do not neglect to observe the Numbered Minor Planets in your telescope field of view as a "by product" of your observational programs. ... We think such estimations ought to be produced every morning after CCD observations of the moving celestial objects by observer himself. ...

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... The Second International Astronomy Olympiad . ... Problems to solve, 8-10 Form Text of these problems is available in Russian too. ... Two stars have the same absolute magnitude. ... The orbital period of Mars is 687 days. ... See problem 2. for 8-10 Form. ... Problem to solve, 9-12 Form Text of the problem is available in Russian too. ... Problem is about Doppler-effect, to find velosities of two stars using their spectra and spectrum of our Sun, to estimate speed of the Earth moving around the Sun...

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• IV International Astronomy Olympiad, Problems to solve
• III International Astronomy Olympiad, Problems to solve
• Problems of the 1-st International Astronomy Olympiad

... Program to run on guppimaster reading "scramNet" multicast packets and then loading the information into guppi shared memory. scramnet "multicast" packets: . ... The multiscram program on observer reads the scramnet shared memory once a second and multicasts this info onto aonet. ... It is controlled by keyword values stored in "guppi status" shared memory on puppimaster. scramPuppi attaches to this shared memory and updates the variables whose state is defined in the scramnet packets. no options: ....

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• datataking_software
• LEAPFROG TECHNIQUE OBSERVING INSTRUCTIONS
• CIMA Frequently Asked Questions

... LOCATION . ... The administrative centre, the library, scientific laboratories, computer center, hotel and apartment houses of an observatory are located in the settlement Nizhnij Arkhiz , which is situated in 25 kms to the south from a village Zelenchukskaya. ... It is desirable to come on conference by the following types of transport: . ... During the conference period it is supposed to conduct a public meeting of the section "Sun" with discussion of results of the researches made in 2005. ...

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• instruct
• The conference " Multiwave investigations of the Sun and modern problems of
• The spectrograph design and the observing procedure

... There is a search machine which is valuable if you have a problem which can be described in terms of a few key words. The technical forums will also describe new facilities as they are brought on-line. CA-forum - compact array technical issues . ... The Narrabri Compact Array documentation . ... Search tool ----- This only covers the epping web site. ... 04-Apr-1997 M.J.L. Kesteven (mkesteve@atnf.csiro.au) . ...

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• PPTA Wiki | Main / Observing
• Archive of VLBI Observations Majordomo List
• VLBI Wiki | Main / P483ObservingNotes

... The package AMPLE (Adaptable Minor Planet Ephemerides) is dedicated to solving a number of problems concerning minor planets with the aid of IBM-type personal computer. ... Obtaining selection of orbital elements and/ or photometric parameters of minor planets in conformity with imposed restrictions. ... The orbital elements of all minor planets used in AMPLE for 2015 have been determined in IAA on the ground of available observations in the catalogue of observations of the Minor Planet Center. ...

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• ENGAMPLE
• LAB Ephem. Astronomy-ERA
• NAA 2007-2008 (preface)

... An OBJECT column gives the name of the object observed (usually a star name). ... In critical cases, it is common practice to measure sky on two or more positions around a target object, and these positions must be identified. ... A general treatment of this problem requires a column called OBJECT, bearing the usual name of the object (as in the star tables); a column labelled STARSKY, to distinguish between star+sky, star alone, or sky alone; and additional columns to identify the sky position. ...

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• HyperLEDA Internal documentation
• Source Positions
• Cosmology FAQ: Where is center of the Big Bang?

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

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• Contributions by amateurs: SN1996X.
• The Network Time Protocol (NTP) Distribution
• APOD: September 15, 1996 - Tycho Brahe Measures the Sky

... Up: Data Analysis and Processing Techniques . ... Also, a method for quality control of CCD observations is suggested. ... Everyone who observes a celestial object using a CCD detects moving celestial objects as a ``by product''. ... We hope that our investigations may be useful for near-Earth space control and also for searches of the moving celestial objects through analysis of old and new CCD frames obtained at any amateur or professional astronomical observatory. ...

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• Imaging by an Optimizing Method
• BIMA Xfiles: Empowering the Observer with Tcl/Tk Applications
• WinTICS-24 Version 2.0 and PFITS-An Integrated Telescope/CCD Control Interface

Weaving together Astronomy+Statistics+Computer Science+Engineering+Intrumentation, far beyond the growing borders . ... Archives . ... Title : How Astronomers, Computer Scientists and Statisticians are working together to tackle hard problems in astronomy . ... The IIC has established an inter-disciplinary Center for Time Series with an immediate focus on astronomy. ... Chandra Blog . ... SAMSI AstroStat Prog. ...

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• The AstroStat Slog time series
• The AstroStat Slog inverse problem
• The AstroStat Slog light curve

... The schedule assigned id (example: AS05) for your observing program. ... Use the time you started using the telescope including when you started taking calibrations. The time you opened for on sky observations can be entered later in the activity log. UTC End Time: . ... Focus Log: . ... The focus position can be obtained under the Telescope column of the System Status in ACP or from the run log. ... When all fields are filled out press this button to email the log to the ARCSAT and community. ...

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• Offsetting a Telescope
• TPM log files
• op010411

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Superb optical performance coupled with time proven computerized pointing and tracking has made the LX200 ACF series a best-seller in the high-performance telescope class. ... LX70 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... LightBridge Series . ...

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• Telescopes - Products

The problem of solar wind data correlation for the observations onboard several spacecraft is very important for three points of view: . ... This problem is studied now in detail by systematic determination of ion flux and ion velocity data correlations by INTERBALL-1 (IKI group), WIND and IMP 8 (both - MIT group). ... Solar wind plasma correlation lengths from IMP 8, WIND and INTERBALL-1. ... Correlation of solar wind observations onboard several spacecraft: INTERBALL-1, IMP 8 and WIND data. ...

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• Transits of Venus
• Trigonometry--what it is good for?
• The Scale of the Solar System

Stellarium 0.12.3 . ... Classes . ... SpaceShipObserver Class Reference . An observer which moves from from one position to another one and/or from one planet to another one. ... SpaceShipObserver (const StelLocation &startLoc, const StelLocation &target, double transitSeconds=1.f) . ... Get whether the life of this observer is over, and therefore that it should be changed to the next one provided by the getNextObserver() method. ... Get the next observer to use once the life of this one is over. ...

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• Stellarium: Quasar Class Reference
• Stellarium: Supernova Class Reference
• Stellarium: BigStarCatalogExtension::StarWrapper< Star > Class Template

This thread illustrates how to evaluate if your RGS observation is affected by pile-up; if so, how to deal with it in some special cases; and how to prevent it occurring. ... Pile-up will cause two coincident first order . ... Thus, pile-up may differ between RGS1 and RGS2 and may abruptly vary between CCD locations due to the nominal event pattern distribution variations over the detectors. ... Migration of photons from 1st to 2nd order (or from 2nd order to 3rd order) . ...

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• Using Target Visibility Checker, V8.0
• XMM-Newton Current Calibration File: Updates
• CIFBuild

... Phases of the Moon is at the top of the list of things that students seriously misunderstand. ... This phase is called "new moon" (like "no moon"). ... Note: although the Moon is closer to the Sun during new and crescent phases, it is still 400 times closer to Earth; i.e., the Sun is VERY far away in reality.) ... When the Moon reaches the position directly opposite the Sun, as viewed from Earth, the half viewed from Earth is fully illuminated (unless the student's head is causing a lunar eclipse). ...

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• Procedures for Observations
• FIRPO Runs
• Star Formation Group of the Arcetri Astrophysical Observatory

Once students get the hang of it, they can find and measure the brightness of Delta Cephei in a few minutes. ... of Delta Cephei . ... Oct. ... The following table lists the measurements of Delta Cephei made by one amateur astronomer in autumn 1990. ... 4.0 . ... This activity is a simplified version of one that appeared in Hands-On Astrophysics, a series of activities prepared by the American Association of Variable Star Observers with support from the National Science Foundation. << previous page | ...

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• ASP: Light Pollution
• ASP: Using Multicultural Dimensions to Teach Astronomy
• ASP: Guest Observer

... Observing . ... This Month's Sky . ... This Month's Sky - 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... In cooperation with the New York City Department of Parks, the United States National Park Service, and other organizations, the Amateur Astronomers Association holds observing sessions at several locations in and around New York City. ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by ...

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• Blue Sky Ranch, Gardiner, NY ? Amateur Astronomers Association of New York
• Observing Resources for Amateur Astronomers ? Part 3: Advanced Observers ?
• Floyd Bennett Field ? Amateur Astronomers Association of New York