... It contains 2 (1 for each polarization) by 4 separate filters that are switch able via the computer. filter 1 is a motor driven tuneable filter covering 1000 to 2000 Mhz with a 2% bandwidth. filter 2 is a ??? . ... An hp34907 dac generates a voltage that corresponds to the requested frequency. ... It steps the filter from 1000 to 2000 Mhz in 25 Mhz steps. ... You now have 41 requested voltages and measured frequencies going from 1000 to 2000 Mhz. ... 20 Mhz) when fit over the 1000 to 2000 Mhz range....

Еще в разделе: (Показать все результаты (>6002) - www.naic.edu/ )

• The AO Optical Laboratories National Astronomy and Ionosphere Center (Arecibo
• Visitors Tourists -- The AO Optical Laboratory
• Arecibo Observatory L-Wide Band Receiver

... 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. ...

Еще в разделе: (Показать все результаты (>321) - zebu.uoregon.edu/ )

... Several HST instruments both current and decommisioned have provided imaging linear polarimetry capabilities. ... The STECF IRAF layered package impol provides five tasks specifically aimed at reduction of HST imaging polarimetry data. ... Reduction of HST polarimetry data and simulation of raw polarimetry images, together with polarization vector plotting, are covered. ... For reduction of data from imaging linear polarization instruments other than from HST, the instrument name is `SPECIAL'. ...

Еще в разделе: (Показать все результаты (>280) - www.stecf.org/ )

• A Color Analysis of NICMOS Parallel Observations
• NICMOS Observes the Galactic Center
• HSTPOLSIM (V1.00) --- April99 --- HSTPOLSIM (V1.00)

Peremennye Zvezdy", . ... GSC 04232-02059, NSVS 3145727, NSVS 3145773, NSVS 3173757 . ... 13.1-13.6 (R, NSVS); . ... To combine our unfiltered photometry with publicly available NSVS (Wozniak et al., 2004; http://skydot.lanl.gov/nsvs/nsvs.php) data, we shifted the zero point of our light curve to match its magnitude at maximum light to the magnitude at maximum of the NSVS light curve. ... Light Curve . The light curve of GSC 4232-02059 in the magnitude scale of NSVS 3145773. ...

Еще в разделе: (Показать все результаты (>78501) - www.astronet.ru/ )

• XWare > APOD

This library currently provides subroutines used to transform theoretical spectra to intermediate and broad-band photometric indices. ... Typical tasks are the response functions and transmission curves for various filters, mirrors and photomultiplier windows. ... The response is zero outside the given wavelength range. ... real . input . Wavelength in nanometres . PHOT_1P21 . ... PHOT_AIR . ... PHOT_ALUM . ... Inputs must be valid as for PHOT_FILTER, PHOT_AIR, PHOT_ALUM and PHOT_1P21. ...

Еще в разделе: (Показать все результаты (>2562) - star.arm.ac.uk/ )

• Terry Mosely's Bulletins
• Solar Eclipse, 3 October:
• Armagh Observatory

RADIOASTROPHYSICAL DEPARTMENT • INSTITUTE OF SOLAR-TERRESTRIAL PHYSICS RAS SB . ... SSRT - Receiving systems . The SSRT has two independent receiving systems for recording solar observational data, and several ancillary receivers for checking, setting up and adjusting the instrument. The base receiving systen is a multichannel filter receiver for a simultaneous recording in 180 channels with the 500 kHz band each, adjusted at steps of about 600 kHz. ... Channel's band . ...

Еще в разделе: (Показать все результаты (>32) - ssrt.iszf.irk.ru/ )

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: . ...

Еще в разделе: (Показать все результаты (>3) - scan.sai.msu.ru/ )

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. ...

Еще в разделе: (Показать все результаты (>1618) - vo.astronet.ru/ )

• http://vo.astronet.ru/~karpov/pdf/2014_Karpov.pdf
• http://vo.astronet.ru/~karpov/pdf/2015_Malaga_mmt.pdf
• http://vo.astronet.ru/~karpov/pdf/2012_Wide_n_Fast.pdf

... Tonight's Sky . ... Observing . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... solar system . galaxies . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Astronomy for Kids . ... Imaging Basics . ... Observing Basics . ... Observing Basics: Visual Solar Filters . ... Expand your observing at Astronomy.com . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

Еще в разделе: (Показать все результаты (>6384) - www.astronomy.com/ )

• Using filters | Astronomy.com
• Maximize a minimum filter | Astronomy.com
• filter | Astronomy.com

... Gallery . ... Home Gallery Astrophotography Julian Parks Gallery . ... Lecture Series 2014-2015 . ... Clear Sky Chart . ... This Month's Sky - 2015 . This Month's Sky - January 2015 . ... Julian Parks Gallery . ... 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 . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...

Еще в разделе: (Показать все результаты (>620) - www.aaa.org/ )

• High Line ? Solar Observing ? Amateur Astronomers Association of New York
• Poe Park, The Bronx ? Solar Observing ? Amateur Astronomers Association of New
• Central Park ? Solar Observing ? Amateur Astronomers Association of New York

... The following charts/text are intended as tools for monitoring the Type Ia supernovae ( SNe ) event visually or photographically (utilizing telescope equipped CCD equipment).The files include: A replication of The Type Ia SNe , V- magnitude (with data point checks from other cited references)and color index (B-V) templete (to indicate a general color-related trend of the type Ia ... I believe this might help alleviate some of the problems involving the making of acceptable amateur light curves...

Еще в разделе: (Показать все результаты (>3345) - www.sai.msu.su/ )

• Biographies
• Sternberg Astronomical Institute
• APOD: 2005 September 17 - The Shadow of Phobos

.

Еще в разделе: (Показать все результаты (>155) - comet.sai.msu.ru/ )

• G. Rudnitskij's Links

Here is one CCD image of the SN. ST7 image format. Dark and flat corrected, Mar 19,1998 at.01.11 UT, yellow filter, temp -20c, 600s track and accumulate exposure (20x30s). The telescope used is 150/2063mm refractor. ... The next image was taken at 29.3.1998 01.27 UT, CCD ST-7, 600 s. Track and Accumulate exposure (15x40s.), no filter, dark and flat corrected, temp -20c, telescope used 2063/152 refractor. ... Back to Supernovae in NGC and IC galaxies . Back to Supernova 1998S images . ...

Еще в разделе: (Показать все результаты (>859) - www.rochesterastronomy.org/ )

• Supernova 1998V in NGC 6627
• Supernova 1998ab in NGC 4704
• Posting to VSNet

... Dept. for Astrometry & Space Geodynamics . ... Dept. for Physics of Stars&Galaxies . Dept. for Space Plasma Physics . Dept. for Physics of Minor Celestial Bodies . Dept. for Physics of Planetary Systems . Dept. for Solar Physics . ... Solar telescopes . ... 2016,MNRAS, 2016MNRAS.tmp.. ... Evans A., Pavlenko Ya.V., Kaminsky B.M., et al.Modelling the spectral energy distribution of the red giant in RS Ophiuchi: evidence for irradiation. ... Equipment . ... All Pages . Page 4 of 5 . ...

Еще в разделе: (Показать все результаты (>360) - www.mao.kiev.ua/ )

• MAO NASU :: Topic: Fw: ASTRONET: Task 5.4 - observing schools (1/1)
• Products
• Internet telescope

Date: 11/25/2014 Time:03:10 Moon Age: 2.8 Available Observing Hours: 13.0 Observer: Instrument: Operator: Cage: Lebofsky, Bell 90PrimeOne Trueblood PF hours lost to: weather: 0.0 telescope: 7.0 instrument: 0.0 computer: 0.0 Time Temp Humidity Wind Vel. Wind Dir. ... Took another hour or two to get telescope pointed correctly. Never did get dome to function properly, it kept going 45 deg to the right of the telescope, despite doing shutdown and startup several times. ...

Еще в разделе: (Показать все результаты (>55) - www.winer.org/ )

• Winer Observatory Command and Control
• Winer Observatory

OptInt PmWiki . ... Science Instrument Downselect . ... Page History | ... PmWiki . ... PmWiki FAQ . ... pmwiki.org . ... Return to Science Instrument Downselect ( Edit ) . ... Proc. SPIE paper on downselect . ... March 09, 2007, at 05:30 PM by John Young - Status from 2006/10/12 update (see attachment) . ... Complete . ... P4S combiner optimization . ... P4S switchyard optimization . ... P8 combiner optimization . ... P8 (internal) switchyard optimization . ... Due 2006/07/31 . ... Due Date . ...

Еще в разделе: (Показать все результаты (>3281) - www.mrao.cam.ac.uk/ )

• Configuring DIMMWIT Computers
• OptInt PmWiki : Science Instrument Downselect
• OptInt PmWiki : Tech Meet 8 | History

Large sunspots were occasionally seen far in the past without any instruments, when the sun was dimmed by thick haze, but not much was remembered of those observations. ... Sunspot Cycle (1850 - 1975) . One who was greatly influenced by Schwabe's discovery was an English gentleman of independent means, Richard Christopher Carrington , who devoted himself to the study of sunspots. ... Carrington had seen a flare, of the rare variety that is visible in white light (only about 50 are known). ...

Еще в разделе: (Показать все результаты (>738) - www.iki.rssi.ru/ )

• Close-up of the Aurora
• The Acceleration of the Aurora
• Auroral Images

... Ciel Espace, le magazine qui vous guide toujours plus loin . ... Ciel Espace, nouvelle formule, c'est . ... les plus belles images de l'Univers d†йcrypt†йes pour vous . ... des pages consacr†йes †а la publication de vos photos Mais c'est aussi une vraie communaut†й avec laquelle partager votre passion et nourrir votre curiosit†й. Accueil Observer Neptune au t†йlescope . ... Pour localiser Neptune, invisible †а l'ЉУil nu, un t†йlescope dot†й d'un syst†иme de pointage automatique est un atout. ...

Еще в разделе: (Показать все результаты (>2792) - www.cieletespace.fr/ )

• –А observer : V–їnus, Spica et des –їtoiles filantes | Ciel et Espace
• Stardust va observer le cratГЕre de Deep Impact sur la comГЕte Tempel 1 | Ciel
• Curiosity observe de nouvelles traces dтАЩeau | Ciel et Espace

... GCN 8471 | ... TITLE: GCN CIRCULAR NUMBER: 8516 SUBJECT: GRB 081102: MASTER refind and final results DATE: 08/11/11 15:50:10 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, N.Shatskiy, N.Tyurina, D.Kuvshinov, P.Balanutsa Sternberg Astronomical Institute, Moscow State University A. Tlatov, A.Parkhomenko Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinski, I.Zalognikh Ural State GCN Circ 8470, Lipunov et al., ...

Еще в разделе: (Показать все результаты (>47) - observ.pereplet.ru/ )

• MASTER-Net Science Release on prompt optical observation of the GRB 090424
• MASTER GLOBAL ROBOTIC TELESCOPES NET

Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Telescopes and Observatories . ... The majestic star-forming region in the Lagoon Nebula. The pale ring to the right is an internal reflection in the telescope.€а (Image credit: ESO/ VPHAS+/ V. Kalari and J. Vink (Armagh Observatory) . ... The 18 component images were further processed twice. ... Venu and his colleagues use images like this to identify individual young forming stars in the Lagoon Nebula and determine their ages. ...

Еще в разделе: (Показать все результаты (>2788) - www.armaghplanet.com/ )

• Where and When to See Comet PANSTARRS | Astronotes