... Near Infrared Camera and Multi-Object Spectrometer Instrument Handbook for Cycle 17 > Appendix C: Bright Object Mode > C.1 Bright Object Mode . ... The time taken to read through a quadrant on the array sets a fundamental limit on the fastest electron collection rate which can be achieved by resetting all the pixels. ... In BRIGHTOBJ mode, an ACCUM sequence of operations is performed on one pixel in each quadrant at a time. ... The time required to take a BRIGHTOBJ mode exposure can be rather long. ...

To appear in "Fourth Workshop on Robotic Autonomous Observatories (2015)"RevMexAA(SC) METEOR OBSERVATIONS WITH MINI-MEGATORTORA WIDE-FIELD MONITORING SYSTEM S. Karpov, 1, 3 N. Orekhova2 G. Beskin, 1, 3 A. Biryukov3,4 S. Bondar,2 E. Ivanov,2 E. Katkova,2 A. Perkov, and V. Sasyuk3 RESUMEN 2 Favor de prop orcionar un resumen en espanol. ... The faintest detected meteors has the peak brightness about 10 mag, while the ma jority - from 4 to 8 mag. ... 2010; Karpov et al. 2013; Beskin et al. ...

... For high spectral resolution observations the devices permanently located at the N2 focus of the BTA are used (Klochkova, 1995, Panchuk, 1995). However for a number of tasks to be performed, it is needed to rule out the influence of the second and third mirrors, i.e. to realize the high spectral resolution ( ) directly at the prime focus. ... Examine the principal parameters of the PF echelle spectrometer, which is equivalent in spectral resolution to the CCD-equipped MSS (Panchuk, 1995). ...

... High spectral, spatial and temporal resolution UV observations of the quiet Sun transition region show a highly structured and dynamical environment where transient supersonic flows are commonly observed. ... Estimates of the kinetic and enthalpy fluxes associated with these events show that explosive events are not important so far as solar coronal heating is concerned. ... In some cases, non-Gaussian line profiles are associated with supersonic flows in small magnetic loops. ...

... It will be replenished by new figures.. See also the collection of the radio and X-ray SNRs maps (from literature) and fast access to to the X-ray Einstein SNRs maps (Seward 1990, tb1) (at Pat Slane site). ... 64Trushkin: Multi-frequency observations of supernova remnants with the RATAN-600 radio telescope . The figures are the strip brightness distributions along RA at the central declination of SNR. ...

I read with interest the letter from Stephen White in the June 2001 edition of the ATNF Newsletter, pointing out that the current 3-mm upgrade of the ATCA, while providing powerful new facilities, will not provide the first 3-mm interferometer in the Southern Hemisphere. ... The interferometer and eclipse results, taken together, indicated that the solar brightness distribution at a wavelength of 3-mm was constant over the disc except for a narrow bright ring at the solar limb. ...

... The stars examined here were primarily culled from two lists of X--ray sources in Orion. ... The second region is two degrees in extent east--west and ten degrees north--south with Orionis being near the northern edge. ... In the end, two main regions were chosen for monitoring: stars near Orionis and stars northwest of the belt of Orion. ... The PSPC identified 22 sources within 15 of Orionis in addition to the sources listed in Table 1 , giving a total of 85 X--ray sources in the Orionis region. ...

... 1 second integrations . 180 second on , off position switching followed by a 10 sec cal on,off. ... find all a2811 files for Nov13: 271 . ... Only keep the 180 secs on, or off sources (542 scans) . find all scans that include 1381.05 Mhz . ... The x axis holds the 1 second data samples of the 1381.05 Mhz channel . ... This algorithm overestimates the amount of gps L3 rfi if the rfi is on for > 50% and < 100% of the 180 seconds (the median will use the gpsl3 value if it is on > 50% of the time. ...

... Contacts: Evgeny A. Loupian, Dr. Sci., e-mail: evgeny@smis.iki.rssi.ru Sergey A. Bartalev, Dr. Sci., e-mail: bartalev@smis.iki.rssi.ru Web interface for burnt area mapping using Landsat data Stellar Tracker In 2013 IKI RAN together with the NPK "Electrooptics" completed the phase of the five-year research on studying the ways to build a stellar inertial navigation system (SINS) for aviation applications. ... Fig. 1 shows the SINS layout created on the basis of the astronomical camera. ... Fig.1. ...

... 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. ...

... Saturns Moon Rhea from Cassini . ... Each moon of Saturn seems to come with its own mystery. ... The Rosette Nebula . ... The bland New General Catalog designation of NGC 2237 doesn't appear to diminish the appearance of the this flowery emission nebula. Inside the nebula lies an open cluster of bright young stars designated NGC 2244. ... The Virgo Cluster is so close that it spans more than 5 degrees on the sky - about 10 times the angle made by a full Moon. ... NGC 3132: The Eight Burst Nebula . ...

This WWW form allows the user to list selected portions of the NRAO/VLA Sky Survey (NVSS) radio source catalog. ... Until the completion of the survey the source catalog will NOT cover the entire region of the survey and care must be exercised in interpreting the results of a catalog search. ... The second parameter in the "Search radius" box or one of the optional items in a position list can be used to specify a region in which to look for other sources. ... An example of a position list entry is: . ...

... Design of Imaging Optics . Analyzing Optics . ... The high resolution near infrared camera (CONICA) for the first VLT unit telescope is under development. It serves as a multi-mode instrument for the wavelength region between 1.0 and 5.0 microns, providing diffraction-limited spatial resolution when combined with the adaptive optic system NAOS of the VLT (Rosset et al. ... VLT instrumentation, ALADDIN InSb detector, NIR imaging, NIR spectroscopy, re-imaging optics, IR optics . ...

This is a copy of a Press Release from E.S.O. The most recent ESO observations of bright Comet Hyakutake have shown rapid changes in the innermost coma, within a few hundred kilometres from the cometary nucleus. This result has only become possible because of the unusual combination of a bright comet being near the Earth, together with the excellent imaging quality of the ESO 3.5-metre New Technology Telescope (NTT). ... Go to the ESO Homepage for Comet Hyakutake . ESO/La Silla | ...

... About 10% of the time is allocated to moving the telescope to the zenith and exchanging the spectrographic cartridges. ... Focus telescope (open-loop)* . ... TOTAL TIME (seconds) . ... This assumes two 60 second arc exposures and two 55 second readouts. ... Otherwise, the arc exposure will likely consist of a 30 second integration followed by a quick 28 second readout, half the normal time. ... The flat-field exposure can be read out with a quick 28 second readout, half the normal time. ...

... The Stellar Oscillations Network Group (SONG) seeks to study p-mode (acoustic) oscillations in solar type stars. ... The observation of many solar-like stars will also help us to understand how solar p-modes are excited and damped. ... Naively, the two or three orders of magnitude improvement over this provided by the normal 1 second time resolution of the KPNO CCD cameras should be quite sufficient for such a detection. ... Figure: Non-cadenced data-a free-running observing sequence. ...

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

. Attached is the discovery image of SN1999by. It is a 30 second exposure with the 30cm SCT and Starlight Xpress camera. The discovery was confirmed by Tom Boles and Mark Armstrong and looks as if it could be very bright. Although the weather has been very poor, I have managed over 1500 observations in April. Ron Arbour . Back to Bright Supernovae . David Bishop Last modified: Mon May 3 09:08:05 EDT 1999

... 2011: . A comparison of radiation in the corona above the spot in the radio and X-ray ranges . In the observations of the 04.01.2011 solar eclipse at the RT-32 (the observatories Svetloe and Zelenchukskaya) and RATAN-600 radio telescopes the limiting angular resolution (1 arc second) in the eclipse observations in the microwave frequency range was reached for the first time, determined by the diffraction on the lunar limb. ... Archive . ...

. [ Go back to Comet WWW site ] . Andrew A. Martis . martis @ sai.msu.ru .