... Submitted by Sidney Johnston on 03/14/2013 01:01:35 . 2013 comet Panstarrs on 13 March 2013 . ... We took this image with a Canon 40D, 135 mm setting on a zoom lens (28 mm - 135 mm) on 13 March 2013, at about 19:50 EDT (18:50 EST) (23:50 UTC). The image was stretched by Photoshop to adjust brightness. The pesky aircraft contrail shows in the original camera image and also in the stretched image “with contrail”. ... Copyright (c) Amateur Telescope Makers of Boston, Inc. ...

Galileo image of Venus taken from 2.7 million km. ... Galileo, P-37222) . ... Central Latitude/Longitude (deg): N/A . ... Instrument: Solid State Imaging CCD Camera . ... Instrument Field of View (deg): .46 x .46 . ... Illumination Incidence Angle (deg): N/A . Phase Angle (deg): N/A . ... Surface Emission Angle (deg): N/A . ... NASA Image ID number: P-37222 . ... Code 633, NASA Goddard Space Flight Center . Greenbelt, MD 20771, USA . ... Code 630, NASA Goddard Space Flight Center . ...

saturn_g_02_95d.fits Date of observation is 2006-11-16T17:47:56 Mt. ... rings is Titan: VI Saturn II III IV V VI Titan II Enceladus IV Dione V Rhea III Tethys Header listing for HDU #1: SIMPLE = T / file does conform to FITS standard BITPIX = 16 / number of bits per data pixel NAXIS = 2 / number of data axes NAXIS1 = 3072 / length of data axis 1 NAXIS2 = 2048 / length of data axis 2 EXTEND = T / FITS dataset may contain extensions COMMENT FITS (Flexible 376.. ...

. Before opening an important file for editing, it is good practice to make a copy of your original file; in the event of problems you can always revert to the original.

Next: List of Tables Up: No Title Previous: Contents . A dark current CCD exposure with cosmic ray events which are removed with non--linear filters. A) original, (B) 5*5 median filter, (C) 5*1 median filter, and (D) 5*1 recursive filter. Removal of cosmic ray events on a CCD spectral exposure with different techniques: (A) original, (B) median filter, (C) recursive filter and (D) stack comparison. ... Images RINGS and OFFRINGS. ... This image is obtained by the command visual/cube . ...

... Bad Astronomy . ... Bad Astronomy: The North Star, Polaris, is a very bright star. Good Astronomy: Polaris is a middling-bright star, easily missed. ... He said it was close to Polaris, the North Star, but he also said it was in the East. ... It's natural, I suppose, to think that such an important star should be bright, but really, that's a conceit, like thinking that the Earth is at the center of the Universe. If more people knew just why Polaris is the North Star, this Bad Idea would stop. ...

... Baffled, you turn to the waiter. ... The waiter smiles. ... Some prefer small stars while others insist that the larger they are the better they are. ... Of course," he adds, sensing your concern, "you are the guest of Chez Stella. ... Immediately you hear the "tock... tock... tock" of the stopwatch, and you gaze deep into the distant star. ... You hadn't noticed before, but it is giving off vast symmetric clouds of what looks like smoke or dust hanging in the space around the beautiful star. ...

10/18/2003 1:02 PM . ... Original: 960x1280 (209k) . ... Thumbnail: 150x200 (6k) . Flash: Flash did not fire . ... Aperture: f/4 . ... Original: 960x1280 (153k) . ... Original: 1280x960 (158k) . Thumbnail: 200x150 (8k) . Flash: Flash fired . ... Original: 1280x960 (378k) . ... 11/10/2004 8:42 PM . ... Original: 396x592 (92k) . Thumbnail: 134x200 (6k) . ... Original: 396x592 (87k) . ... Original: 396x599 (69k) . Thumbnail: 132x200 (5k) . ... Thumbnail: 200x132 (5k) . ...

Microsymposium 38, MS083, 2003 (A4 format) MERCURY: LOCAL VARIATIONS OF THE PHOTOMETRIC RELIEF. ... Because of trajectory and pointing angle constraints the planet could be observed from Mariner 10 only over a small range of phase angles between about 75o and 110o. Therefore the photometric investigations are restricted to measuring the distribution of brightness on the Mercurian disk. ... Raw versions of real-time processing pictures FDS 0000984 and FDS 0000986 were used (images 196 and 202). ...

... Astrophysics Group . ... MRAO Telescopes . RYLE . ... The Ryle Telescope, formerly known as the 5-km Telescope, was originally designed as an 8-element E-W interferometer with the objective of mapping individual radio sources with an angular resolution as good as that of large optical telescopes when it was built in 1971. ... The Ryle Telescope in a compact configuration. (б© Mullard Radio Astronomy Observatory, 1995.) ... For information on other MRAO telescopes, follow the links on the left. ...

Adding a few refinements to the DISCals script makes a script worth adapting for your own uses. ... The exposure times and # of iterations are short so the demo runs quickly. def __init__(self, sr): Display the exposure status panel. # if True, run in debug-only mode (which doesn't DO anything, it just pretends) sr.debug = False expStatusWdg = ExposeStatusWdg( master = sr.master, instName = DIS , ) expStatusWdg.grid(row=0, column=0) # get the exposure model self.expModel = ...

... The Galactic low-mass X-ray binary GS 2023+338 was discovered during the burst on May 22, 1989 with the Japanise satellite Ginga (aka Galaxy). The flux reached 17 crabs (this unit of flux measurement is an bright X-ray source, Crab Nebula) at 10-35 keV. ... No other radio telescope worldwide carried out multi-frequency measurements. ... Upon 14 days the radio flux fell below the detection level at the RATAN-600 in relation to the decrease of the X-ray flux. ...

2001 The sband narrow cals have a single diode that feeds both polarizations. This is the lcorcal (if you select any other type of cal with sbn you will always get lcorcal). I'm not sure the date of the original cal measurements. On 14oct03 the polarizations were switched. Measurements of the sbn cals. date . ... New receiver installed . ... installed 10apr06 . ... Pre 14oct03 : polA 6.9, polB 6.76. ... These were the values used until the new values were installed on 10apr06 . ...

... Since moonshine is really reflected sunlight, the full Moon is on the average slightly brighter in mid-winter, when Earth is closest to the Sun. In addition, the distance of the full Moon also varies, due to the ellipticity ("eccentricity") of the Moon's orbit. On 22 December, 1999, the two effects combined to produce the brightest full Moon of the century. ... This year will be the first full moon to occur on the winter solstice, Dec. 22nd, commonly called the first day of winter. ...

On' failures in the NIRSpec MEMS ST-ECF Instrument Science Report NGST 2002-02 The effects of `on' failures in a MEMS array for the NGST NIRSpec Santiago Arribas, Robert Fosbury Peter Jakobsen --1-- ST-ECF Instrument Science Report NGST 2002-02 The effects of `on' failures in a MEMS array for the NGST ... Assuming that the spectrum of a single facet uses 2000 detector pixels, only 0.01% of `on' failures is acceptable (i.e., 400 facets in a 2k в 2K MEMS array). ...

You Can Make Stellar Images Brighter . Articles | ... A few months ago I wrote an article titled "You Can’t Make Them Brighter". So why am I now writing that you can make them brighter. ... The image of a focused star is actually a small disk called the Airy disk, named after the 19 th century scientist Sir George Airy. ... For a given aperture, a smaller Airy disk means that the light is focused to a smaller disk and is therefore brighter. ... www.astronomy.net . About Astronomy Net | ...

... The catalog contains SAO number; the right ascension and declination with a B1950.0 equinox and epoch; annual proper motion and its standard deviation, photographic and visual magnitudes; spectral type; references to sources; the Durchmusterung (DM) identifier if the star is listed in the Bonner DM (BD), Cordoba DM (CD), or Cape Photographic DM (CP); component identification; The Henry Draper (Extension) (HD or HDE) number; and J2000 positions and proper motions. ...

... Астрософт (Модератор: tlgleonid ) > . UCAC2 Bright Star Supplement для Cartes du Ciel . ... Астрософт . ... Cartes du Ciel - Sky Charts . ... 08 Август 2008, 14:04:19 ? Также готов каталог I/294 The UCAC2 Bright Star Supplement (Urban+, 2004), являющийся северным дополнением к каталогу I/289 The UCAC2 Catalogue(Zacharias+ 2003). ... Ответ #1 : 08 Август 2008, 14:41:20 ? ... Самая слабая звезда в каталоге UCAC2 Bright Star Supplement - это 2UCA 50406212 Vmag: 15.19 в Малой Медведице. ...

... PUL2 catalog contains original absolute proper motions of 59646 stars in 149 fields with galaxies. ... Mean errors of relative proper motions in PUL2 catalog is 5.5 mas/year. ... The external mean error of one relative proper motion of a bright star of PUL2 catalog is 9 mas/year for both of coordinates. ... After issue of UCAC2 catalog, we decided to improve accuracy of proper motions, using Pul-3 coordinates (of 1950s) as the first epoch, and UCAC2 coordinates as the second epoch. ...

Общая Астрономическая Конференция > Форумы общей направленности > Любые вопросы от новичков . sky-watcher p2001eq5 . ... Регистрация . ... Поиск . Сообщения за день . ... Original . ... Отправить личное сообщение для Original . Найти еще сообщения от Original . ... Созвездия (поиск и описание) .. Созвездия южного неба (поиск и описание) .. Осенние созвездия (поиск и описание) .. Летние созвездия (поиск и описание) .. Околополюсные созвездия (поиск и описание) .. ...