... Bad Astronomy . ... Bitesize Astronomy . ... Last week's Snack talked about how black holes can affect the environment around them in such a way as to be very bright . ... It's a common misconception that black holes always have matter swirling into them. ... As this matter gets closer and closer to the black hole it piles up and a large, fairly flat disk forms. This is called the accretion disk , because matter from this disk accretes (that is, falls in) on the black hole. ... 2008 Phil Plait. ...

Next: To produce a region Up: Image Display in Xwindows Previous: General usage. ... Menu items are chosen by clicking any mouse button (cf. ... save current cursor as an include region (counts within region will be included in subsequent calculations) . ... When another image is displayed, the earlier one can be compared with it by pressing its respective mouse button with cursor in the main display window. ... Table 1: Detailed list of menu options . ... color . ... enter/leave region sub-menu . ...

... This section highlights some typical FOC image characteristics. ... Occulting fingers located near the aperture entrance if the image size is greater than 512 x 512 pixels or if the FUV prism is in the beam. Reseau marks etched onto the faceplate of the detector to aid in geometric correction ( Figure 4.4 ). ... A faint diagonal parallel striping pattern called pattern noise . ... Warped edges ( Figure 4.4 ). ... Figure 4.5: FOC 512 x 512 Image Showing Faint "Thumbprint" Pattern or "Fringes" . ...

Set the display of the status bar, tool bar, locator bar, and properties associated with the display of the pointer position in the Locator bar. ... Set fixed point . ... When the fixed point is set, and the display format is (DX, DY), (DIST), or (R, Theta) then give the location relative to the fixed point. ... Set the fixed point to (0.0, 0.0). ... DX, DY] Display the delta in X and Y of the position of the mouse relative to the fixed point, or (0, 0) if no fixed point has been selected. ...

... Data Reduction FAQ > The reduced science spectrum displayed in the Reflex window appears good but when I try to plot it, it is quite different. How can I get it? ... Observing with ESO Telescopes . ... ESO-MIDAS . ... Reflex . ... ESO Data . ... ESO HST Image Galleries . ... ESO Data Access Policy . ... ESO Science Newsletter . ... ESO Annual Reports . ... Seminars at ESO Santiago . ... Seminars at ESO Garching . ... ESO Telescope Bibliography . ... Last Update: 01.04.14 ESO . ...

... Virginia Kilborn's program gfinder was run on 388 luthered and edge-masked HIPASS cubes , covering the whole southern sky, over all 1024 channels (i.e. -1281 to 12741 km/s), with an HI peak flux cutoff of 60 mJy/beam. ... The large number of candidates is mostly due to artifacts generated in areas of strong continuum flux, mostly the Galactic Plane, (causing a baseline ripple), the HI emission in our Galaxy, and lots of interference (1408 MHz birdie, GPS etc.) ... Number of galaxies: . ... galaxies ...

. Album : Фотоальбом Сергея Аюкова :: Travels to distant places and countries :: 1997/08 Japan (Kyoto, Nara) :: 17/08 Kyoto streets. Maruyama park . Up . << Prev . Dreaming about things on display. After checking, they appeared to be not that tasty compared to how they look. Next >> . Created with the tool album generator from David's MarginalHacks on Wed Jun 5 20:38:34 2013 .

Next: Background Correction Up: Reduction using Standard Previous: Order definition: Method . The parameter WIDTH2 is the width of the calibration lines. ... Now we can execute CALIBRATE/ECHELLE . ... CALIBRATE/ECHELLE DONE ! ... The user is prompted for the identification of two calibration lines on the image display, repeated in overlapped regions of adjacent orders. ... The wavelength calibration is wrong and apparently no identification error was made: There are too many lines per order. ...

A quite amazing and extensive aurora was visible from Northern Ireland during much of last evening and into the early morning. Astronomers at the Armagh Observatory were occupied for much of the evening in recording observations and taking photographs of the spectacular display. The display was first seen when twilight ended as a prominent blue glow in the northeast. About 15 minutes later, at around 7:00 pm, a green aurora could be seen in the northeast. ...

... Meade Instruments Corporation . Telescopes ћ Binoculars ћ Microscopes . ... ETX-90AT and Autostar Frequently Asked Questions . ... Which of the Autostar alignment procedures is recommended for viewing celestial objects right out of the box? When using Autostar, how important is leveling the telescope and pointing it to true north before alignment in the Alt/Az or Polar modes? ... Meade ETX-90EC Astro Telescope . ... Copyright 2006 Meade Instruments Corporation, All Rights Reserved. ...

... Open Cluster NGC 290: A Stellar Jewel Box . ... 1006 AD: Supernova in the Sky . ... The expanding debris cloud from the stellar explosion is still visible to modern astronomers, but what did the supernova look like in 1006? Skylab Over Earth . ... Many scientific tests were performed on Skylab, including astronomical observations in ultraviolet and X-ray light. NGC 7635: Bubble in a Cosmic Sea . ... Crumbling Comet Schwassmann Wachmann 3 Approaches . ... M82: Galaxy with a Supergalactic Wind . ...

... Image operations . ... OldMethod Allows the user to select new spectra from the image. ... New method Allows the user to select new spectra from the image using the ds9 image. ... The button is disabled if the source-list is not empty- The source-lis