Lecture 15 Plan for Lecture Will complete derivation of Angular Diameter Distance and then go through a specific example-- Einstein de Sitter universe Then look at what it becomes in a ` flat ' universe (currently favoured) Then discuss velocities and the Hubble Law (actually derive this) And then specific examples of what the data on Luminosity distance seems to be saying about the dynamics of the universe Finally, a new topic -- horizons, in ... Also, k = 0 (for EdS) S () . ...

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• Astrophysics Group AMI
• Data Format Session at 2001 IAU WG Meeting

The Solar spots - are the dark formations on the Sun's disk. ... The greatest observed spot is 100 thousand kilomiters. The spots are the places of the magnetic fields' getting out to the solar atmosphere. ... That's why they look so dark . ... The Solar convection zone is the layer with the thickness of 150 - 200 thousand kilomiters, situated under the photosphere; the substance of this layer being in convectional movement transformes the energy from inside the Sun's to its surface. ...

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• smalltelae
• merkurie

... Actual stars are expected to be more complicated than these simulations. ... The spot may be entirely visible most of the time (one would observe a prolonged flux minimum low), and then part of it may disappear over the horizon briefly and then return (slow rise and then fall back to constant level). ... With the set of observations taken here, I have information available from several comparison stars and color information. ... The period found must be consistent with the data from any given night....

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• How did I collect the tweets from the 219th meeting of the AAS
• A Quick Look at Spectral Fitting
• The AstroStat Slog Blog Archive When you observed zero counts, you didn?t not

... Data Analysis SAS News What is SAS? ... Calibration & Background Calibration Background Analysis . SOC Info XMM-Newton Contact Details How to get to ESAC ESA Research Fellowships ESAC Trainee Projects ESA Young Graduate Trainees . ... Other Links Project Related Links Research Projects Other X-ray Missions Space Weather Links . The Science Operations and Data Systems Division of ESA's Research and Scientific Support Department develops and runs astronomy projects in space. ...

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• XMM-Newton Trainee Project 2004
• Changing the look & feel
• XMM Science Objectives

... Moon Phase below . ... ARTICLE: Why the moon always shows us the same face . ... Before you continue reading, you should know that this was not always the case, i.e. the Moon once was rotating with respect to the Earth, so that on every night a terrestrial observer (if there was one, because this was long, long before mankind appeared on our planet, and even before any major animals had appeared) saw another face of the Moon. ... Figure 1 (not to scale) shows how we can imagine the system Earth-Moon...

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• The Galaxy Gallery: Messier Objects
• Ozone Depletion
• Cosmological Issues for Theorists

New England observer Lew Gramer, fresh back from his mid-November fish observing and meteor-catching expedition in South Florida, reports that December also promises to be a great month for celestial sky-sparks!" ... Other showers adding to the mix this month include several very minor showers, such as the Chi Orionids (3 Dec), Monocerotids (9 Dec) and Sigma Hydrids (12 Dec), which usually contribute no more than 2 or 3 meteors per hour during even post-midnight observing this month. ...

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• Amateur Telescope Makers of Boston
• Venus 2004 transit photo collection
• Mars pictures from Stellafane by Paul Valleli

RTT150 . ... This search system is designed for generating the necessary information on series of pointings (observations of each source consist of sets of exposures with different filters and sometimes with different exposure times) for observed sources. Search results appear at the separate page as a table with the following data: . DATE - real (not evening!) observations date (in YYYY-MM-DD format); . ... Bin - minimal CCD binning mode (may vary during the observations); . ...

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... As is known, the observed distribution of massive stars in the direction of the Galactic center looks very peculiar: the vast majority of all massive stars are concentrated towards the central 1 pc or so (Genzel et al. ... In order to compare the observed distribution of X-ray sources in the Galactic center with what would be expected from the population synthesis computations, we have considered two hypothetical scenarios for the location of the starburst. ...

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• Seminars
• Gravitational waves from supernova explosions
• The COOC Criterion (Criterion of Observations versus Calculations)

... 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
• Information for On-Site Observers
• Astrophysical Research Consortium - Apache Point Observatory

. NEVER look directly at the sun without a proper solar filter! . We have lots of different equipment available for use. Here you see our 6" solar filters. Our club always recommends that you use a FULL APERTURE solar filter. In the picture you will notice a TYPE 2 filter for VISUAL use and a TYPE 3 filter for PHOTOGRAPHIC use. Here is an easy way to remember which type solar filter you need for VISUAL OBSERVING: You have 2 EYES so you need a TYPE 2 filter!! .

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• A brief tour page 3
• Pictures From the CLUB
• Hidden Hollow 2008 Barbara Hubal

Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic . It is now evident that observed interstellar extinction cannot be explain using particles of only one kind. ... The intensity of radiation after passing a dust cloud is equal to . ... The interstellar extinction is . ... Next: Extinction efficiencies: general behaviour Up: Optical properties of cosmic Previous: Optical properties of cosmic root 2003-04-09 ...

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• Database of Optical Properties -- Level: subsubsubpage
• Wavelength dependence

Next: The Distributed Analysis System Hierarchy (DASH) for the SUBARU Telescope . ... The REMOT project objective is to develop and validate a generic approach to allow remote control of scientific experiments and facilities that require real time operation and multimedia information feedback. ... These have been partly implemented to perform a set of demonstrations, showing the feasibility of the design. ... Integrating the control system of the Galileo telescope in the REMOT project is simple: . ...

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• On the Need for Input Data Control in Pipeline Reductions
• The Ground Support Facilities for the BeppoSAX Mission
• The XTE Data Finder (XDF)

Databases (NSDC) of the Natural Planetary Satellites. ... NSDC: Database of astrometric observations of Natural Planetary Satellites . ... They are thoroughly looking for observations in different sources, creating their owndatabases which are then mostly inaccessible to other researchers. ... In the file "content" with explications, the reference is given to the data source as well as the bibliographic reference. ... Data sources. ... Why a specific bibliographic database for Natural satellites? ...

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... Looking south-east at the moonlit ANU 2.3m teтАж . ... Title: Looking south-east at the moonlit ANU 2.3m telescope building with the Anglo-Australian Telescope dome in the distance . ... Looking south-east at the moonlit ANU 2.3m telescope building with the Anglo-Australian Telescope dome in the distance The Milky Way from the Southern Cross to the tail of the Scorpion is rising. ...

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• Proposed Facility
• Research Interests
• The High-Z SN Search Description

... According to the most popular cosmological paradigm, the greater part of the galaxy mass is accumulated in the dark matter halo. ... The polar ring galaxies (PRGs) reveal external rings or disks of gas, dust and stars rotating in a plane roughly perpendicular to the disk of the central galaxy. ... The shape of the dark halo in the model was chosen so as to achieve the best fit to the observed rotation of both galaxies themselves and their polar rings. ... The SPRC-7 galaxy. ...

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• Detection of Radio Transients and Variable Radio Sources Using the Archive Data
• Ratan-600 schedule archive

Astronomy Discussion Forums . ... New Theory Of Relativity [Nwobu's Effect] . ... Post Message | ... Nwobu’s effect is an optical theory of relativity that explains the principle of physical observation. ... I observed this phenomenon and started solving it mathematically but it latter, turned out to be a Special Theory Of Relativity. ... www.astronomy.net . ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• Observe Every Photon's Size Experiment - an Astronomy Net Education Forum
• TIME DILATION - an Astronomy Net Observation_reports Forum Message
• FURTHER EXPLANATION [NWOBU'S EFFECT] - an Astronomy Net Observation_reports

... Space flight . ... Simulators . ... Space camp . Space Hotel . ... Virtual reality-based stand for ISS crew training is used for cosmonauts pre-training preparation at different stages of training for the space flight. ... At present cosmonauts and astronauts can work both with the SM and FGB images independently and having them in mated state. ... Info: Industry news On-line Data Company ATLAS news Events We in press Contact . Copyright 2000-2016 ATLAS Aerospace . ...

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Date: Night of 20070406 Time: 20070407 00:47 Queensland ET Telescope: CDK20S Camera: SBIG STL 6303 Observer: Rhodes Hart Location referenced off Alpha Centauri Went to 14:29:42.95 -62:40:46.1 in xmtel Took V 30 secs , - 15C image With 90deg rotate and x flip, found a match with aladin star field tv_30s_001 to 004 30 secs tr_30s_001 to 004 30 secs tb_30s_001 to 004 30 secs ti_30s_001 tu_30s_001 Seeing looks about 2 tr_30s_001d.fits ...

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• http://www.astro.louisville.edu/shared_skies/archive/select/messier/m33/20121121/notes_template.txt
• http://www.astro.louisville.edu/shared_skies/archive/select/stars/orion/rigel/20110103/notes.txt

Posting Observations . ... You will need to subscribe to vsnet-acc (to allow you access to post your observations). ... VSNet has several different e-mail sigs, and sub sigs. ... These list are controlled by a software package called " Majordomo ", which allows you to subscribe and unsubscribe yourself from these list with an e-mail message (automated). ... Once you have subscribed to vsnet-acc (which will only send you a welcome message back and nothing else) you can post to the other list. ...

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• Supernova 1987A in LMC
• Supernova Links
• Supernova 1998ar in NGC 2916