... ESO is building what will be the World's largest optical telescope array, The Very Large Telescope (VLT). The VLT Project organisation is responsible for the design and construction of the Unit Telescopes, including enclosures, optics, adapter-rotators and coating unit. ... Unit Telescopes Overview - This page is outdated, an update is in process. ... Secondary mirror (M2 Unit) - This page is outdated, an update is in process. ... Coating Unit - This page is outdated, an update is in process. ...

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• The composition of a star that should not exist | ESO
• Around the Cat's Paw Nebula | ESO
• The hidden fires of the Flame Nebula* | ESO

Map projected image of Earth (AVHRR) 123k gif ; 1440k gif . Famous Apollo 11 image of Africa Europe 31k jpg . global composite of satellite images 508k gif . ... Galileo image of South America from 1st flyby 62k jpg . ... Earth by Meteosat 4 satellite (IR filter) 688k jpg . ... Ross ice sheet, Antarctica, taken by Galileo on its first pass of Earth 11k jpg . ... NOAA satellite's view of USA 322k gif . ... images of Earth from Clementine html . Earth images from weather satellites html . ...

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• Planetary Picture List
• Venus Picture List
• Misc Planetary Picture List

... Sun vs Super Moon . 11.05.2012 . The Super Moon wins, by just a little, when its apparent size is compared to the Sun in this ingenious composite picture. To make it, the Full Moon on May 6 was photographed with the same camera and telescope used to image the Sun (with a dense solar filter!) on the following day. ... It was really not about superheroes as on May 6 the much touted Super Moon, the largest Full Moon of 2012, rose over this otherwise peaceful harbor. ... The Light of Stars . ...

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... Imaging techniques III: the Large Magellanic Cloud . ... The two images above show the neutral hydrogen (HI) distribution of the Large Magellanic Cloud (LMC), a close neighbour of our Milky Way, using data from the Australia Telescope Compact Array (ATCA) on the left and a combination of Parkes and ATCA HI data on the right. An interferometer - like the ATCA - acts like a filter. ... today * ATNF | Parkes | ATCA | ...

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Map projected image of Earth (AVHRR) 123k gif . Famous Apollo 11 image of Africa & Europe 31k jpg . global composite of satellite images 508k gif . ... Earth by Meteosat 4 satellite (IR filter) 688k jpg . ... infrared weather satellite image of the US and Mexico gif . ... NOAA satellite's view of USA 322k gif . ... USA at night 67k gif ; html . ... Earth-Moon together from Galileo 2nd flyby P-41508 79K gif . ... Earth images from weather satellites html . ... Earth Viewer html . ... Earth .. ...

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• APOD: 2011 July 5 - A Triangular Shadow of a Large Volcano
• APOD: 2011 September 25 - A Large Tsunami Shock Wave on the Sun
• APOD: 2006 December 13 - A Large Tsunami Shock Wave on the Sun

Most of these images were obtained by Mike Bessell, Michelle Buxton, Hwankyung Sung, Ralph Sutherland and Bob Watson at SSO using a 2Kx2K Site CCD behind a Nikon or Hasselblad lens or directly on the 1m telescope. A few images are from the Hubble Space Telescope. Some of the M42 images were obtained with the KPNO 1m and ESO NTT telescope. One image is a mosaic of IRAS images. ... Details of the CCD imaging program at MSSSO. ... antenna.jpg (53KB) . ... ngc6744.jpg (59KB) . ...

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• Large Magellenic Cloud
• Large Magellenic Cloud (7)

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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• Low Surface Brightness Galaxy Gallery
• Astro-2 and the UIT Experiment
• Cosmological Issues for Theorists

... 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 . ... Astronomy for Kids . ... Observing springtime deep-sky objects with a large telescope . ... large (8 inches or larger) . ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ... Astronomy Magazine . ...

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• very large telescope | Astronomy.com
• large magellanic cloud | Astronomy.com
• filter | Astronomy.com

... STScI-PRC00-06 LIGHT AND SHADOW IN THE CARINA NEBULA Previously unseen details of a mysterious, complex structure within the Carina Nebula (NGC 3372) are revealed by this image of the "Keyhole Nebula," obtained with NASA's Hubble Space Telescope. ... This region, about 8000 light-years from Earth, is located adjacent to the famous explosive variable star Eta Carinae, which lies just outside the field of view toward the upper right. ...

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• APOD: 2000 September 25 - AR 9169: A Large Sunspot
• APOD: 2000 January 12 - NGC 6791: An Old, Large Open Cluster
• Optical System

TAKE PICTURES. ... Large Monolithic Mirror LMM Gary Matthews Manager, Image Collection Systems Eastman Kodak Company April 11, 2003 LMM Program Goals TAKE PICTURES. ... Mirror concept builds on successful AMSD segmented core design Mirror constructed of smaller segmented blanks joined before processing 5 LMM TAKE PICTURES. ... Large mirror core Pocket milled demonstration mirror AMSD highly segmented core 14 LMM Subscale Demonstration Mirror Design TAKE PICTURES. ...

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• Structure of the Large Magellanic Cloud (LMC)
• Making HST Pictures: Illustrations
• Same Visit, No Rotation, Large Shift

... Large . ... Normal . ... Thumbnails . ... Enter: Large | ... Contents with thumbnails: Large | ... Florence streets . ... Rome. ... Sunday, 12 September. ... Monday, 13 September. ... Tuesday, 14 September. ... Wednesday, 15 September. ... Thuesday, 16 September. ... Friday, 17 September. ... Saturday, 18 September. ... There's also index of the complete set of photos with thumbnails. ... return to photo album contents | ...

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• Photo album: Japan: Kyoto and Nara, August 1997
• Raymond Elias Feist's books

... 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 . ...

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• VISTA Exposure Time Calculator Help v1.0

... We replaced the power supply and the system started to work. ... We computed the total power Tsys (using the cal value). ... Page 1: 9 level, total power Tsys . ... Page 2: 9 level spectra of Tsys . ... The polA 9level total power offset was no longer there. the +5 analog supply for halfband filters 3,4 failed sometime around 21jun11. this caused the Tsys for sbc3,4 to increase by about 3 deg K for 9 level sampling. 3level sampling has a tsys increase of about .5 K . ... up_to_interim cor page . ...

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• Some pictures of the Arecibo Observatory
• The Canadian Rockies
• hires jumps 27mar13

Next: Generation from Ground Calibration Up: LARGESCALESENS Previous: LARGESCALESENS Contents . ... The LargeScaleSens file describes the large scale response uniformity of the combination filter and detector. ... An interpolation of the large-scale map is required in order to obtain a map at a finer grid. ... large scale response of GRISM1 1st order . ... large scale response of GRISM2 1st order . ... large scale response of GRISM1 0th order . ... large scale response of GRISM2 0th order . ...

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• Procedure
• Return largest true index of a logical vector

adapted from Observe: Eclipses, published in 1979 by the Astronomical League and "Safe Solar Filters," by B. Ralph Chou, Sky and Telescope, August 1981) . ... Tape TWO pieces of film together into a sandwich, and tape this over the opening in the cardboard. ... The cardboard frame will act as a shade from the bright Sun, while you safely observe through the film sandwich. ... Undeveloped film is not safe. ... tape . ... At the end of one of the tubes, tape the aluminum foil, and make a tiny pinhole. ...

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• ASP: Star Science in the Autumn Sky
• ASP: The New and Improved Hubble Space Telescope
• ASP: Making Your Own Astronomical Camera

... example, note below the dramatic speedup in searching a 1 Gb file using an AND filter, even when one of the columns (pha) has no index : time fundisp \ huge.fits'[idx_activate=0,idx_debug=1,pha= 2348 4000 4000 1]' \ x y pha x y pha ---------- ----------- ---------- 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 3999.48 4000.47 2348 ... Currently, indexed filtering only works with FITS binary tables and raw event files. ...

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• The AstroStat Slog Blog Archive The Big Picture
• Chandra Supernova Remnants Catalog - Format of the Catalog
• The AstroStat Slog Big Picture

... This noise can be reduced by replacing the pixels with an average of the surrounding values using a linear filter. ... The effects of applying linear filters to a CCD frame is shown in Figure . Figure: Different digital filters applied on a CCD image: (A) original, (B) block filter, (C) smooth filter, and (D) Laplacian filter. ... To remove stellar images from a picture of comet Halley, the results of applying different non--linear filters to the frame are given in Figure . ...

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• Artifacts
• Spectroscopy
• Hierarchical Wiener filtering

... The British consortium, currently led by Professor Gordon Bromage of the University of Central Lancashire , includes the Universities of Keele , Nottingham and Southampton , the Open University and Armagh Observatory and will be joining the other partners in the SALT project, from South Africa, Poland, Germany, USA and New Zealand. ... SALT Dome . ... The SALT project is managed by a team based at the SALT Headquarters at Sutherland and South African Astronomical Observatory in Cape Town. ...

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• Did the world's largest telescopes survive the earthquake? | OASES Over us All
• Terry Mosely's Bulletins
• Objects in the Sky

... 11 Yellow-Green (78% transmission): Contrasts well with the red and blue characteristics of surface features on Jupiter and Saturn. ... 82A Light Blue (73% transmission): Useful on the Moon, Mars, Jupiter, and Saturn, this subtle pale blue filter enhances areas of low contrast while avoiding significant reduction of overall image brightness. ... Meade Series 4000 Photo-Visual Color Filters may be ordered individually or in the following sets: . ... Meade Series 4000 Broadband Nebular Filters . ...

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• Meade Series 4000 Broadband Nebular Filters
• Meade Series 4000 Moon Filter: ND96
• Meade Series 4000 #905 Variable Polarizing Filter (1.25")

... Bojan Nikolic web pages home . ... There are quite a few large astronomical data analysis packages like IRAF and CASA which offer tools for filtering and smoothing of astronomical images. ... In particular I found that importing a FITS file into CASA, doing some smoothing and re-exporting to FITS introduced enough changes to the format of to the structure of the image that I could easily continue analysis of the image outside the CASA package. ... Copyright 2012, Bojan Nikolic feedback welcome ...

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• Astrophysics Group Very Large Telescope Interferometer
• Astrophysics Group Atacama Large Millimetre Array (ALMA)
• Martin Krause - Large Scale Very Light Jet Simulation