... HST . ... Data . ... HST Overview . Overview . ... Instruments . ... Instrument Handbook . COS Data Handbook . ... For more information about the use of this FP-POS option see Section 5.8.2 of the COS Instrument Handbook. ... COS has the advantage of a fairly large aperture so that there are only small aperture losses ( see Section 5.1.9 of the COS IHB). ... The available spectroscopic resolving powers (R) available to observers with COS are listed in Table 5.1 of the COS Instrument Handbook. ...

Home . ... Observing . Exposure Time Calculator (ETC) . Survey processing . ... ESO - Public Surveys . near IR surveys . ... Exposure Time Calculator . ... Survey Area Definition Tool . Recommended values for Detector Integration Time (DIT) . ... Detector Properties . ... Filter properties . ... ESO ][ VISTA Home ] ...

... Public . Science . ... Science Users Information > Observing with ESO Telescopes > Public Surveys . ... Public Surveys . Publications with ESO Data . ... Large Programmes . ... Public Surveys Programmes . ... Public Surveys Phase 2 . ... Here we present the Public Survey projects and give information on the mechanisms that ESO has set in place to manage them, to ensure their legacy value and their usefulness for the astronomical community at large. ... ESO Public Surveys Phase 2 workshop . ...

Next: Visibility Processing Up: Primary Beams and Mosaicing Previous: Mosaicing . ... Pointing grid pattern: In a mosaic experiment, you observe a number of pointings - possibly a few to several hundred, depending on the size of the source of interest. ... For a well-illuminated dish, this spacing corresponds roughly to half-power point spacing between field centres. ... Field Naming Convention: When preparing the observe files for an ATCA mosaic experiment, you will create a `mosaic file'. ...

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

... During the analysis of the surveys carried out on RATAN-600, it was found that almost one fifth of the detected sources shows significant radio flux variations. ... We used the data from "Cold" radio surveys carried out with RATAN-600 in 1980-1994 to search for radio sources with significant flux variability. ... On possibility of detection of variable sources using the data of Cold surveys carried out on RATAN-600. ... Detection of Variable Sources Using the Data of "Cold" Surveys. ...

Riccardo Giovanelli, Martha Haynes, Mary Putman, Barbara Catinella and Emmanuel Momjian A1963 uses an extension of the A1946 fixed azmith drift mode. ... Best for rfi identification; unfortunately Doppler correction, although computed, not recorded in FITS file. ... 9 level auto . Best for sensitivity and rfi mitigation . ... 9 level reduces total # chans by half) . ... The CAL time is additional. ... Sources /home/lerner/fixedAZ2.tcl (executive) and /home/lerner/fixedAZ2_widget.tcl (gui) . ...

... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...

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... Recent Topics . ... MAO main . ... Fw: ASTRONET: Task 5.4 - observing schools . ... Subject: Re: ASTRONET: Task 5.4 - observing schools . ... second half of September, and which will be funded by the training and . ... www.iap.fr/opticon/neon_schools/2014/index.html . ... intended for master and starting PhD students. ... actions on observing schools, providing access for students, Master . ... observing schools for master students. ... in form of observing schools for pre-PhD students. ... MAO NASU...

... Note on Filters: . ... NGC 3351 is a mostly face-on late type spiral galaxy. It is marked by a bar like feature in its central regions and a strong inner ring of star formation. ... The galaxy was imaged through the A1,B1 and B5 filters over a total exposure time of 1936 seconds. ... The galaxy was imaged through the A1 filter for 450 seconds and the B1 filter for 1084 seconds. ... The galaxy was imaged through the A1 and V1 filters over a total exposure time of 1200 seconds. ...

... Data is taken from Hilton (2011): Active M3-M5, 332 hours on 4 stars observing 157 flares; Active M6-M8, 59 hours on 4 stars observing 39 flares; Less Active M3тАУM5, 147 hrs on 8 stars observing 28 flares; Inactive M0-M2, 256 hours on 16 stars observing 9 flares; Inactive M3-M5, 153 hours on 6 stars observing 3 flares; Active M0-M1, data from Moffett (1974), Doyle Mathiouidakis (1990) and Dal Evren (2011), 156 hours on 2 stars observing 63 flares. ...

... Observing . ... Home Education Workshops at Adorama Astronomy Workshop: Observing Variable Stars from the City ? February 15, 2015 . ... Beyond New York City . ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Presented by€а Adorama €аFor the Amateur Astronomers Association of New York . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

... The J, H and K bands are characterized by a bright background, such a background is mainly due to the emission of atmospheric lines and of thermal radiation. ... If the source cover a large fraction of the slit, spectra off-source must be observed to adequately sample the sky background. ... The on chip integration time (time spent in each position of the slit) must not exceed 40 seconds in J and H bands and 60 seconds in K band. ... We suggest a sequence of 10 for each elementary integration time. ...

ATMoB "Open Cluster Observing Award " Guidelines Purpose: To promote observing among the membership of the Amateur Telescope Makers of Boston through participation in the Open Clusters Observing Awards program. Introduction: This awards program is oriented towards visually observing open clusters above magnitude 9.9. ... It turns out that a very unprejudiced and convenient method to dermine the limiting magnitude is to count the number of visible stars in certain areas on the sky. ...

... Does the time it takes different methods to create all the elements coincide with the universeт??s accepted age? ... Illinois Urbana-Champaign) Different kinds of stars create elements at different rates, all of which are consistent with the age of the universe. Get instant access to subscriber content on Astronomy.com! ... Registration is FREE and takes only a few seconds to complete. If you are already registered on Astronomy.com, please log in below. ...

... Over the first 4 years, its X-ray telescopes eROSITA and ART-XC will survey the whole sky with a record sensitivity in the 0.5-10 keV energy band. ... The goal of the second international Spectrum-RG conference is to discuss the different scientific topics addressed by the mission, synergies with surveys at other wavelengths, and requirements to follow-up observations.Contributed talks and poster presentations are invited on the topics related to the SRG science goals. ... Active galactic nuclei . ...

... Spacecraft . 29b. Satellites looking down . ... 29e. Explorers of distant space . ... The Hubble orbiting telescope. ... The Hubble telescope , in low Earth orbit, overcomes such limitations, in the visible range and in part of the UV. ... So fruitful was this observation that a second "deep field" exposure of such length, near the southern pole of the heavens, was recently conducted. ... Some satellites specialize in observing the Sun, such as the Japanese Yohkoh and NASA's SOHO . ...