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... 2010 . ... The following images are mosaics obtained on 03 August 2010 at the National Solar Observatory/Dunn Solar Telescope with the Interferometric Bidimensional Spectrometer (IBIS). ... The final images are approximately 238 x 242 arcseconds, or 4 x 4 arcminutes, with a pixel scale of 0.0976 arcseconds per pixel. ... The images show a broad range of typical chromospheric structures, including sunspots, superpenumbra, plage, filaments, and quiet internetwork. ...

M1 image More About M1 Nice Color Picture . ... M16 image More About M16 HST image . ... M31 image More About M31 Nice Color Picture . ... M42 image ; M43 image More About M42/43 Nice Color CCD Picture . M51 image More About M51 Color Image of M51 M51 Supernova . M57 image More About M57 Nice Color CCD Picture Very Deep M57 Image . ... M81 image More About M81 M81 Supernova Ultraviolet Image of M81 More about Ultraviolet Imaging . M82 image More About M82 M82 False Color M82 True Color . ...

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... Астронет | Картинка дня | ... планета Астронет | ... Астрономическая картинка дня . ... Около равноденствия магнитное поле Земли ориентировано так, что создаются благоприятные условия для взаимодействия с солнечным ветром, которое и вызывает прекрасное северное сияние. ... Полярные сияния и магнитосфера Юпитера . ... Слегка сжатое магнитное поле словно через воронку несет заряженные частицы к полюсам Юпитера, опуская их прямо в его атмосферу. ... Туманность Пузырь крупным планом . ...

... The Great Nebula in Carina . ... Eta Carinae , the most energetic star in the nebula, was one of the brightest stars in the sky in the 1830s, but then faded dramatically. Eta Carinae is the brightest star near the image center, just left of the Keyhole Nebula . While Eta Carinae itself maybe on the verge of a supernova explosion, X-ray images indicate that much of the Great Carina Nebula has been a veritable supernova factory . Tomorrow's picture: open space . ...

... Tonight's Sky . ... The Magazine . ... Observing . ... Magazine . ... Gravitational wave search provides insights into galaxy evolution and mergers . ... The double star 54 Leonis, spiral galaxy NGC 3198, and emission nebula NGC 3199 . ... Open cluster NGC 2818, spiral galaxy NGC 2964, and spiral galaxy NGC 2976 . ... Astronomy for Kids . ... Meade Instruments Corp. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

... In addition to functioning as the prime instrument, the WFPC2 can be used for parallel observations. ... The central portion of the OTA F/24 beam is intercepted by a steerable pick-off mirror attached to the WFPC2, and is diverted through an open entry port into the instrument. ... Then the light falls onto a shallow-angle, four-faceted pyramid located at the aberrated OTA focus, each face of the pyramid being a concave spherical surface. ... Figure 2.2: WFPC2 Optical Configuration. ...

... Science . ... Science Users Information > Observing Facilities > Paranal Facilities > Paranal Instrumentation . ... Offered Instruments . ... Paranal News . ... Paranal Instrumentation . ... Overview . ... Instrument Description . Manuals . ... Visitor Instructions . ... VLTI Visitor Instrument . ... Paranal Science Operations . ... The links to the different instruments provide an overview of the respective instrument capabilites and the offered instrument modes. ... Last Update: 29.02.16 ESO . ...

... ATNF Home . About ATNF . ... About ATNF overview . ... Governance overview . Australia Telescope Steering Committee . ... Australia Telescope User Committee . ... Our people overview . ... Student list | ... Publications overview . ... Murchison Radio-astronomy Observatory . ... Parkes radio telescope . ... Mopra radio telescope . ... Parkes | ... Visiting Parkes radio telescope . ... Parkes radio telescope webcam . ... This gallery shows photos of project activities. ... Wildflowers Home . ...

... 19-Jan-2013 12:53 . ... 2.8K . ... 11K . ... 10K . ... 15K . Apache/2.2.15 (CentOS) Server at rp.iszf.irk.ru Port 80 ...

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. Russion version . Last updated on May, 2008 . RadioAstron Mission .

... Status of the ELECTRON experiment . ... The objective of the ELECTRON experiment is to perform 3-D measurements of the plasma electrons in the energy range from 10 eV to 26000 eV, with good angular resolution, sensitivity and large dynamical range. ... Figure 1 presents the ELECTRON sensor. ... Click on the picture to view large one) . ... Figure 3 shows dynamical spectra with counting rate measurements performed by ELECTRON experiment during very multiple magnetopause crossings on February, 4, 1996...

. ChASeM33 . - The Chandra ACIS Survey of M33 - . Picture Gallery . M33: . M33 (R, G, U) . M33 (Ha, R, B) . M33 (R, Ha, NUV) . M33 (Ha, NUV, soft X-rays) . M33 (soft, medium, hard X-rays) . NGC604: . NGC604 (NII, Ha) . NGC604 (Ha, NII, soft X-rays) . NGC604 (multi wavelength composite) . NGC604 (soft, medium, hard X-rays) . IC131: . IC131 (r, g, u) . IC131 (Ha, NII, soft X-rays) . IC131 (multi wavelength composite) . IC131 (soft, medium, hard X-rays) . Back to main page .

... This is possible at modest cost due to the low moments of inertia of the telescope and enclosure. ... This same performance will be achieved in higher winds when the telescope enclosure is facing away from the wind, or by using wind screens. ... The telescope system (MILT) will be remotely operable with an on-site operator's assistance by an astronomer located at one of the ARC member institutions. ... Mean Wind Speed . ... Offsets > 10 deg: 1 arc sec rms max . ... 5 sec max, tracking to tracking . ...

... Bad Astronomy . Misconceptions . ... I have a fun video on how to stand an egg on end on my blog at Discover Magazine . ... At the end of the show, one of the characters looks up the words "egg" and "equinox" on the web... and says it sent him to "thingsthatarewrong.com". ... Bad Astronomy : Only on the day of the Vernal (spring) Equinox, can you stand a raw egg on its end. Good astronomy : If you can stand a raw egg on end, it has nothing to do with the Equinox. ... 2008 Phil Plait. ...

... SEARCH ASP SITE: Match ALL words Match ANY word . ... Graduate Student Researcher, Lick Observatory, UC Santa Cruz . Randi writes: "When I was in third grade, I didn't know what I wanted to be. ... I decided to become an astronomer because that way I could use electronic instruments and computers to study the natural world." ... Vy writes: "I wanted to be a veternarian as a kid. ... Only later, in high school, did I start thinking that I wanted to be an astronomer." ... search . ...

... 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: Summary of reduction Up: Echelle Reduction Previous: Saving the Data . In the present version we will be concerned with the standard configuration of CASPEC, the Cassegrain Echelle Spectrograph which is in operation at the Cassegrain focus of the ESO 3.6 m telescope. ... In its standard configuration CASPEC uses a a 31.6 lines/mm echelle grating together with a 300 lines/mm grating cross disperser. ... The table shows the change in resolution with the order number. Table: Resolution . ...