STIS Instrument Handbook for Cycle 24 . ... Space Telescope Imaging Spectrograph Instrument Handbook for Cycle 24 > Chapter 2: Special Considerationsfor Cycle 24 > 2.8 Prime and Parallel Observing: MAMA Bright Object Constraints . ... To protect the instrument, we have established limits on the maximum count rate at which the detectors may be illuminated. These count rate limits translate into a set of configuration-dependent bright object screening magnitudes. ...

... Science Users Information > Observing with ESO Telescopes > Phase 2 Preparation > Observing conditions . ... Service Mode Philosophy . ... The following definitions of the observing conditions are common between Phase 1 preparation and Phase 2 preparation, as well as between Service Mode and Visitor Mode observations. ... There are additional Service Mode Policies and Service Mode Guidelines regarding the observing conditions. ... Seeing (Phase 1) and Image quality (Phase2) constraints . ... Moon . ...

... ARC 3.5m | Weather Closure Conditions . The enclosure will be closed by the Observing Specialist under the following conditions. ... This policy will be consulted whenever there are questions or disagreements concerning closure of the APO 3.5-meter telescope due to hazardous conditions or situations, at times when telescope operations are being overseen by an APO Observing Specialist. ... the on-duty Observing Specialist has full responsibility, and sole authority, to make this decision. ...

DISCLAIMER: The larger the aperture, the more light a telescope will gather and the fainter the object you can see. Here is a range of magnitudes you might expect to see. Given excellent sky conditions and good optics, a well trained eye can sometimes add up to 0.8 magnitude to these values. Limiting Magnitude depends on much more than the instruments aperture. ... One formula is for aperture in inches the other is for aperture in millimeters. ... Aperture (inches) . ... 15.2 . ...

... ASRAS HOME . Radio Astronomy . ... About ASRAS . ... Our Observing Site . ... 2015 Mees Tour Guides . ... We're offering Regular Tours (a presentation on astronomy geared to a general audience, followed by a tour of the observatory and (hopefully!) observing of several objects, which may include the Moon, planets, nebulae, star clusters and perhaps galaxies), and Kids' Tours (a more interactive presentation specially aimed at youngsters plus the observatory tour and observing) as in prior years. ...

Next: Optimization of spectroscopic observations Up: On the problem of Previous: On the problem of . In comparison with spectroscopy of extended extragalactic objects, the task of observing stars with a high spectral resolution is traditionally given lower priority. ... A ``natural'' response of some researchers of stars and starlike objects is preferential use of low and moderate spectral resolution techniques, where one succeeds in minimizing losses at the spectrograph input. ...

... Next: The PROS Big Up: Software Systems Previous: Data Reduction Software . ... The srcinten task provides PROS users with a tool to compute count rates for point sources in the ROSAT High Resolution Imager (HRI). ... Corrected upper limits are cited at locations where the count rate falls below the source detection threshold. ... Srcinten is a new PROS task that computes and applies the above correction factors to the net counts in a user-specified aperture. ...

... ATNF Home . ... About ATNF overview . ... Australia Telescope Steering Committee . ... Astrophysics graduate student programs . ... Australian Square Kilometre Array Pathfinder . Murchison Radio-astronomy Observatory . ... Parkes radio telescope . Australia Telescope Compact Array . Mopra radio telescope . ... In general it is expected that the overall sensitivity limit will be imposed by the readout noise from the science detector, even given that coherent `blind' integration is possible. ...

On April 27 the large sunspot in Active Region 8970 was observed using the Adaptive Optics system at the Swedish Vacuum Solar Telescope at La Palma. ... It showed to give a significant improvement of the image quality under less favorable conditions. Click on the image to get a high resolution version. ... The data cube is cut in three pieces to get manageable file sizes, you can glue them together to restore the whole 108 images cube. gband_ao.01_36.cube.fits 36.5 Mb: image 1 - 36 . ...

Cameras for TDI Applications Princeton Instruments offers several rectangular format cameras that are ideal for TDI applications, which require high resolution in one direction only. This allows for a lower cost system with the same high dynamic range and performance of square format imaging arrays. ... TDI Applications Imaging of conveyor belts is a common industrial application of TDI. ... Many non-destructive inspection applications require economical high resolution Xray imaging. ...

... Moore Observatory is a research and advanced teaching facility of the University of Louisville. ... The 24-inch Ritchie Chretien (RC24) telescope is a research instrument used by faculty and graduate students involved in studies of exoplanets, optical properties of the atmosphere, and the development of imaging and spectroscopic technology. ... Kent (CDK20S) are collaboratively operated by the University of Louisville and the University of Southern Queensland for both research and education. ...

Proposal Identi cation No.: A1759 Date Received: 2003-Feb-03 10:47:30 Technical Page Proposal Type: Regular General Category: Astronomy Sub-Category: Spectroscopy Observation Category: Total Time Requested: 50 Hours Proposal Title: Completing the HI observations of late-type galaxies in the Virgo cluster ABSTRACT: We aim to obtain Hi detections or signi cant upper limits (rms0.2-0.4 mJy at 5 km/s resolution) for a complete sample of 30 late-type galaxies in the Virgo cluster. ...

Home About Meade Product Information Dealer Locator Customer Support Investor Relations Dealer Support Employment Opportunities Site Map . Meade Instruments Corporation . ... Meade Binocular Limited Warranty . ... Meade will repair or replace the product, or part thereof, found upon inspection by Meade to be defective, provided the defective part or product is returned to Meade, freight prepaid, with proof of purchase. ... This warranty supersedes all previous Meade binocular warranties. ...

... Instrument tuning )! ... Specific calibrations have been performed recently Standardized high energy Crab spectrum would be very useful JEM-X calibration JEM-X is affected by some instabilities which affect software and calibrations: microstrip erosion ( decreased HV and S/N) microstrip ions diffuse into glass plate ( HV adjustments) gain variation ( electronic efficiency to be determined on short time scales) memory effect on microstrips transient hot spots Observations are ...

A Terra Hunting Experiment at the INT Rationale To detect smaller mass planets (down to 1Mе) using the radial velocity technique, we need to be able to retrieve a signal in the limit of stellar variability noise. ... Such an observing program is not feasible with a non-dedicated telescope. To address this, we are proposing a "Terra Hunting Experiment" to be performed using a close-copy of the HARPS spectrograph installed on the 2.5m Isaac Newton Telescope (INT) in La Palma. ...

RadioAstron AO-1 prop osal Submission dead line: February 8, 23:59 UT. ... Team contact name and e-mail address: Ivan Petrov (e-mail: Ivan.Peterov@gmail.com ) Total observing time request: 100 hrs Number of independent observing segments and typical range of pro jected baselines required: 20 (3-30 Earth diameters) Specific dates and time intervals requested : If your experiment requires specific dates and UT ranges, please, indicate them: February 1, 2014: 08:00-16:00 UT -- M87 imaging ...

... Exposure Time Calculator (ETC) . ... ESO - Public Surveys . ... the recommended values to use for DIT, . ... Detector on-chip integration (DIT): seconds. to your chosen value - a separate page gives recommended values to use for DIT - for modes 1 and 2 below you may wish to start with the maximum recommended values as these will minimize the effect of read noise (a total object exposure of Y secs with DIT=X secs will produce Y/X lots of read noise) and give you a lower limit on the time needed. ...

Next: Rotation Periods of ZAMS stars Previous: T Tauri Stars . ... The first attempts to directly measure periodic modulation of T Tauri stars occurred in the early 1980s. Rydgren & Vrba (1983) observed four PMS stars using photoelectric photometry over a period of seven consecutive photometric nights. ... Because the spot lifetime is much longer than the rotational period, the observed effect will be a modulation of the light from the star synchronously with the rotation period. ...

... About ATMoB . ... The Observing Committee is starting an Observing Awards Program to promote observing among the membership of the Amateur Telescope Makers of Boston. ... Participant must be a current member of the Amateur Telescope Makers of Boston . ... To qualify for your Observing Award Certificate, turn in your worksheet and drawings to an ATMoB Observing Committee member or observing@atmob.org . ... This Excel sheet has useful macros. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

... At the Limit of Diffraction . ... Credit Copyright: Yuri Beletsky ( Las Campanas Observatory , Carnegie Institution ) Explanation: Did you ever want to just look through the eyepiece of a large telescope in space ? If you could, you would see a sharp view that was diffraction limited . ... Still, in this working earth-based snapshot a new active adaptive optics system (MagAO) is being used to cancel out the atmospheric blurring in a visual observation of famous double star system Alpha Centauri . ...