. This is a new popup window - close it when you are done . Submitted by Paul Valleli on 01/16/2007 15:51:32 . HET Control Room . Logon to post a follow-up comment or review comments from others . Copyright (c) Amateur Telescope Makers of Boston, Inc. About Us Contact Us

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. ...

... Archives . ... Discontinuation of weekly [arXiv] series . ... For a discipline that relies so heavily on images, it is rather surprising how little use astronomy makes of the vast body of work on image analysis carried out by mathematicians and computer scientists. ... images. ... Images may be Opened and Closed with different structure elements. ... Tags: close , dilate , EotW , Equation , Equation of the Week , erode , Morphological operator , open , set theory . Category: Imaging , Jargon | ...

... HST . ... APT . ... HST Overview . Overview . ... Phase I Proposing . ... Cycle 24 Announcement . ... Phase II Cycle 23 . ... Documents . ... After you have brought up APT you will see a "Help" menu on the top menu bar. From here you can also bring up the documents that will help you to learn APT. Phase I: You can bring up Phase I Specific APT Training Materials to learn about using APT to submit your Phase I proposal. ... These are the same documents you will find on the HST Website. ...

Main Sections LabIR main page . ... Before mounting FIRPO it is necessary to check the chopper throw. ... It is possible to make these measurements using a diaphragm and a battery light. The diaphragm is one of the small barrels (choose the one with the smallest hole for this purpose), and must be inserted, with the wide opening on top, into a special place close to the telescope focus (push well). ... Check quickly that no ice is being formed through the neck (use a long thin stick). ... open . ...

ChangeLog for dsplot ==================== Open SPRs/SCRs: *none* Version 1.14.6 - 2002-03-13 (UL) -------------- + fixed couple of minor doc problems Version 1.14.5 - 2002-02-20 (UL) -------------- + small adjustmens to test harness to account for gracebat/grbatch differences Version 1.14.4 - 2002-03-15 (UL) -------------- + small fix to make optmized compilation succeed ... Version 0.4 (MB) ----------- - fixed problem in parameter files. ... Upgraded the parameter file. ...

Two weeks ago a small space rock called 2008 TC3 made astronomical history as the first asteroid that both impacted the Earth and was also observed telescopically while still out in space and on its collision path with our planet. Since then, three more small near-Earth objects making very close approaches have been picked up by the Mount Lemmon Survey in Arizona, the third just a day ago. ... See also: Objects currently known to be within 45 million kilometres of the Earth . ...

... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Mars . ... An artificial comet holds secrets to Earths life . ... Comet to make close flyby of Red Planet in October 2014 . ... COMETS | ... Comet C/2013 A1 (Siding Spring) will make a close approach to Mars in October 2014. ... During the close Mars approach, the comet likely will achieve a total visual magnitude of 0 or brighter, as seen from Mars-based assets. ... Only registered members of Astronomy.com are allowed to comment on this article. ...

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 | ...

Next: Version 9.4 Up: Old Releases Previous: Version 10.1 Contents . Add eg24.key to demonstrate putting comments in 24 hour schedules to help the people doing the dynamic scheduling choose alternate start points, shifting scans before that point to the end of the schedule (wrap). RCW Sept. 18, 2011. ... 16, 2011 RCW. ... July 22, 2011 RCW. ... RCW. ... Add pointers in the frequency sets and source summaries in the .sum file so that it is possible to relate a source to a frequency. ...

Keep the size of the tarfile to a minimum by excluding files that can be recreated from files contained in the tarfile. Examples are: .o (object) files that can be recreated by compiling the program source code.dvi files produced by processing TeX and LaTeX source files.ps (postscript) files generated by drawing and publishing packages. After you have created a tarfile, you can then reduce its size by using the compress command. ... This will create a file called project.tar.Z . ...

Sun vs Super Moon . ... 11.05.2012 . ... Credit Copyright: Charlie Szabototh Explanation: 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. ... Near apogee the smaller silhouetted Moon will fit just inside the bright solar disk . ... NASA Official: Jay Norris. ...

... A Close Pass of Saturn's Moon Dione . Image Credit: Cassini Imaging Team , ISS , JPL , ESA , NASA . ... When making its closest pass yet of Saturn's moon Dione late last year, the robotic Cassini spacecraft snapped this far-ranging picture featuring Dione, Saturn's rings, and the two small moons Epimetheus and Prometheus . ... Future events in Cassini's continuing exploration of Saturn and its moons include tomorrow's flyby of Titan and imaging the distant Earth passing behind Saturn in June. ...

... Older browser versions had the nice feature that MIME types (related to the extensions .esh and .ash) and the corresponding actions could be managed directly by the user. For security reasons, this has been disabled for newer browser generations, including the firefox installed on the muc blades. ... 2.1 Heritage accounts and profiles . ... Search for the string 'wrapper': all profiles with a mimeTypes.rdf file containing 'wrapper' are heritage profiles, and you can use them for your browser. ...

Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Stars . ... Space Flight . ... Although they look tranquil here, observed up close such young stars would seethe and glare violently. ... Once thought to be a satellite of our own galaxy, increasingly the Small Magellanic Cloud is believed to be an interloper from the intergalactic void which has wandered into its present location and will eventually recede away into the darkness. ... Your email address will not be published. ...

... Special problems arise with filters intended to measure red leaks in blue and ultraviolet filters. ... The column named REDLEAK contains an 8-character string that specifies the treatment of red leaks in short-wavelength filters. Possible values are 'MEASURED' if the red leak is measured by observations through a filter that isolates the leak; 'BLOCKED' if a copper-sulfate or other blocking filter is used; or 'IGNORED' if the leak is neither measured nor blocked. ...

... 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 . ...

STEP INTO THE BLUE - MEADE INSTRUMENTS PRODUCT GUIDE . ... Telescopes . LX850 Series . ... Meade's revolutionary LS LightSwitchтДв series of telescopes use advanced technologies to do what no other consumer telescopes have done before: take all the hassle out of using a telescope. ... The Meade StarNavigatorтДв series was designed with ease of use and convenience in mind. ... Coronado€о Solar . ... H-Alpha Filters . ... Blocking Filters . Coronado Accessories . ... Dealer Locator . ...

... Output # of the PFB should look just like an FFT. # if ($ start == $fwid/2) { # 1's for my $ idx (0 .. $n-1) { my $ hex = ($highbit-1) $mask; my $cmt = 1 ; push @ vals , Math::BigInt- new($ hex ); push @ cmts , $cmt; } } else { # 0's for my $ idx (0 .. $n-1) { my $ hex = 0; my $cmt = 0 ; push @ vals , Math::BigInt- new($ hex ); push @ cmts , $cmt; } } } else { # Generate floating ...

... Astrophysics Group . ... VSA . ... CAT . ... The Very Small Array is a custom-built radio telescope (operating between 26-36 GHz), designed expressly to make high resolution observations of the cosmic microwave background (CMB) radiation on angular scales around and below one degree. ... The VSA has been operated in ?compact array? and ?extended array? configurations (see the technical description below) and data collected to achieve high sensitivity in both regimes have been analysed. ... 1.75 GHz)...