RECREATIONAL TELESCOPES . ... ASTRONOMICAL TELESCOPES . ... Home Products Telescopes Astronomical Telescopes ASTELE™ 102MN . ... Whatever eyepiece you're using at the time is your finder eyepiece. ... 102MN is 5.5, so, unlike telescopes with much longer ?-ratios, you're able to use low magnification (22.4 X, 2.3° with the 25 mm PlЖssl eyepiece) which produces bright images and wide fields of view for those dim galaxies, nebulae, and very large star clusters, but the ASTELE? ... BK7 optical glass . ...

The beam pattern and the polarization characteristics . of the radio telescope RATAN-600 . The Mueller matrix elements was computed via formulas [1]: . ... The BP were computed by the aperture method, proceeding from the fild distribution in the aperture of the primary mirror. The components of the main and cross-polarization components of the electric field in the vertical aperture of the primary mirror was computed in Frenel diffraction approximation. ...

... 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 . ...

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... Observations have received at the telescope AT-64 of the Crimean Astrophysical Observatory . GRB . ... RA(2000): 11h 45m 10.54s . DEC(2000): 17o 24' 34.44" . ... Filter: none . ... Date, time (UT) . Exposure . ... 2000.07.29 18:21:52 . 30 sec . ... RA(2000): 19h 58m 19.61s . DEC(2000): 23o 32' 35.15" . ... 120 sec . ... DEC(2000): 6o 20' 47.07" . ... 240 sec . ... DEC(2000): 51o 46' 34.93" . ... DEC(2000): -13o 04' 30" . ... DEC(2000): +55o 18' 25.0" . ... 2000-11-09T16:03:19 . ...

... Parallel to HIPASS: o HIDEEP: "The HI equivalent of the Hubble Deep Field" ­ (9000s per beam) HIDEEP: The Basics ! ... selection limits: o peak flux and velocity width limited o limits are 9.6 mJy and 4 ch = 52.8 km/s o completeness limit at ~18 mJy 5 optim.smooth limit 3 peak flux limit HIDEEP: Optical Follow-Up ! ... Galaxies in HIDEEP are more gas-rich observed corrected HIDEEP: Column Densities - Theory TB = ! ... There don't appear to be any low-column density galaxies in HIDEEP ! ...

Eyepieces Forum Message . Forums: . ... Eyepieces ћ Meade ћ Misc. ... Discussion Forums | Eyepieces | ... Solar Filter For 4 Inch Reflector Telescope . Forum List | ... Post Message | ... I would also appreciate any advice anyone has on solar filters. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

... 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 . ...

... Practically all kinds of astronomical images, containing a number of stars and/or galaxies, can be treated with the INVENTORY commands. Up to now INVENTORY has been used or tested on data from the following instruments: Schmidt plates, CCD--frames taken with several telescopes, direct unaided and electronographic plates taken with the ESO 3.6m telescope. ... If one has a number of frames each containing 20 or even a smaller number of objects, it is still worthwhile to use INVENTORY . ...

... 2015 May 7 . At the Limit of Diffraction . ... If you could, you would see a sharp view that was diffraction limited . Unaffected by atmospheric blurring that ultimately plagues earthbound observers, the angular resolution of your diffraction limited view would be determined only by the wavelength of light and diameter of the telescope lens or mirror; the larger the diameter, the sharper the image. ... About APOD | ... NASA Official: Phillip Newman Specific rights apply . ...

... 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 . ...

... We have reference image without OT on 2015-05-20.80932 UT with unfiltered magnitude limit 20.6m. This OT