A year is a time interval approximately equal to the period of the Earth's rotation around the Sun. ... 2) a tropical year is a time interval between the Sun's two centre successive passing through the medium point of the vernal equinox (365,2422 days); . 3) anomalistic year is a time interval between the Sun's two centre successive passing through the perihelion of its visible heliocentric orbit (365,2596 days); . ... 6) lunar year includes 12 lunar synodic months (about 354, 367 days); . ...

... In addition to time, frequency, and scale, there are two other coordinate axes within this transform space: shear-in-time (obtained through convolution with a q-chirp) and shear-in-frequency (obtained through multiplication by a q-chirp). Signals in this multidimensional space can be obtained by a new transform which we call the ``q-chirplet transform'', or simply the ``chirplet transform''. ... CHIRPLET TRANSFORM SUBSPACES . ... Relationship Between Auto Chirplet FF Plane and Radon Transform . ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

... Using the CFBDSIR wide field survey for brown dwarfs, we identified CFBDSIRJ214947.2-040308.9, a late T dwarf with atypically red J-Ks colour. ... SN 2009ip in NGC 7259 Electronic Telegram No. ... 7.09, [19.0; 2009 Aug. ... Accepted for publication in MNRAS Subjects: High Energy Astrophysical Phenomena (astro-ph.HE) The jet opening angle theta_jet and the bulk Lorentz factor Gamma_0 are crucial parameters for the computation of the energetics of Gamma Ray Bursts (GRBs). ...

... You must have the frames with a dark current and flat field for preliminary processing of the images. ... The flat field is necessary for the account of the variations in the sensitivity of pixels. ... 1) Open the frame with a flat field by . ... In the dialogue choose a frame with a dark current. There will be a subtraction of the dark frame from the flat field. ... 3) Apply the flat field by . Note  If several files are open, a dark current and flat field will apply for all. ...

Click here for a PDF version of Richard Berry's talk. Universe 2001: Results of Saturday Evening Imaging . ... Support data for calibrating the CCD consisted of eight bias frames and four 60-second dark frames. ... To rescue the images, we processed and registered the four 15-second integrations and the 60-second integration separately. ... The 60-second images were then registered to the composite of 15-second images to produce the image M11-COMBO.FTS. ...

Sp ecific features of differential motions in the DIMM V. Kornilov, B. Safonov May 28, 2010 1 Intro duction Differential image motion monitor DIMM widely used in studies of optical turbulence, is destined to measure the integrated effect of the Earth's atmosphere on the image quality. ... In the work of Martin, they are obtained by gradual spatial filtering 1 of the power spectrum of phase perturbations in the assumption of Kolmogorov's model of the optical turbulence (OT). ...

TUI supports the following offsets: . Object Arc offset by a given amount on the sky (i.e. along the arc of a great circle). ... Arc offsets are useful for moving a different portion of your object or a different nearby object onto the boresight . ... Object Arc XY this is identical to an Object offset except that it has been rotated to align along the instrument x-y axes. ... This is just like the Calibration XY offset, except that it is typically cleared when you slew to a new object. ...

... We publish 16 Doppler imaging temperature maps for the years 1994-2002 of the active RS CVn star II Peg. ... Through Doppler imaging we want to study the spot evolution of the star and in particular compare this with previous results showing a cyclic spot behaviour and persistent active longitudes. ... The derived temperature maps are quite similar to the ones obtained earlier with a different methods, the main differences occurring in the spot latitudes and relative strength of the spot structures....

The 2dF QSO Redshift Survey (2QZ) . ... Before jumping into all the finer details of teh survey, a brief non-astronomer's guide to redshift surveys is available. ... The primary scientific aims of the QSO survey are: (1) to obtain the primordial fluctuation power spectrum out to COBE scales, (2) to determine the rate of QSO clustering evolution in the non-linear and linear regimes and hence obtain new limits on the value of and the bias parameter, (3) to apply a powerful geometric method to measure . ...

... By undertaking a spectral and photometric investi­ gation of the central part of the bright elliptical galaxy NGC 759, we have found an optical counterpart for the circumnuclear molecular gas ring with the radius of # 3 ## (# 1 kpc) which was earlier reported by Wiklind et al. ... 2 Fig. ... More likely, this ring may be a consequence of a tidal encounter between the elliptical galaxy NGC 759 and a large spiral galaxy which was accompanied by a substantial gas accretion. ...

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... One striking feature is a small source of almost pure H 2 line emission, which is located near one of the compact sources in Orion reported by O'Dell and collaborators (HST-18 = 203-504). ... H-H objects, Proplyds, Orion Bar, H 2 . ... We obtained a series of images across the bright rim of the Orion Bar near the peaks of mm-wave molecular line emission with NICMOS cameras 1-3 (NIC1, NIC2, NIC3) in several filters on 1998 February 18. ... The suggestion of an H-H object does not seem compelling. ...

ABSTRACTS 10-th International Gamow Summer School "Astronomy and beyond: Astrophysics, Cosmology and Gravitation, Cosmomicrophysics, Radio-astronomy and Astrobiology" (Ukraine, Odessa, Chernomorka, 23-28 August, 2010) MEMORIAL SESSION SERGEY ALEKSANDROVICH SNEGOV (1910-1994) ­ OUSTANDING PHYSICIST, COSMOLOGIST, ASTRONOMER AND WRITER ­ VISIONARY TO A 100-ANNIVERSARY FROM BIRTHDAY Pahomov A.G. PFUM, Moscow It is possible to judge a condition of an astronomical science on literary works of time. ...

... November 26, 2001 at 21:24:12 Moscow time the Progress M1-7 transport cargo vehicle with Colibri microsatellite (MS) accommodated in the payload compartment was launched from the Baikonur cosmodrome to the near-earth orbit in compliance with the International Space Station (ISS) flight program. ... According to the ballistic analysis made by S.P. Korolev RSC Energia specialists, MS will make an atmospheric re-entry and be destroyed on 3-4 May 2002. ... Official WEB-site of S.P.Korolev RSC Energia . ...

INFRARED FOURIER-SPECTROMETER SICH-F . ... Instrument work regimes: 1) Inside. 2) Calibration at inside standard sources 2 - 4 times per a rotation. 3) Calibration at "free space" 2 - 4 times per a rotation. 4) Infrared radiation measuring 10 - 40 min. per a rotation. ... Spectrometer consists of the photodetector block and the block of signal processing and control. ... Diagnostic information and attach data will transfer by state telemetric channels. ... Detector temperature. ...

... VaST is a software tool for finding variable objects on a series of astronomical images. ... VaST performs object detection and aperture photometry using SExtractor on each image, cross-matches lists of detected stars, performs magnitude calibration with respect to the first (reference) image and constructs a lightcurve for each object. ... VaST FITS image viewer ./pgfv . ... Part I" PZP, vol. ... K. V. Sokolovsky, S. A. Korotkiy; "New Variable Stars Discovered by the NMW Survey" PZP, vol. ...