... A closed surface (i.e. a compact surface without boundary) is homeomorphic to either a sphere with g handles (a connected sum of a sphere with g tori) or to a sphere with g M obius bands attached (a connected sum of a sphere with g copies of RP 2 ). A compact surface with boundary is homeomorphic to a closed surface with a nite number of disks deleted. ... Prove that on the sphere with g handles the maximal number of nonintersecting closed curves not dividing this surface is equal to g. IV.11. ...

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... Three thousand light-years away, a dying star throws off shells of glowing gas. ... Follow the handle of the Big Dipper away from the dipper's bowl, until you get to the handle's last bright star. ... Mercury and the Chromosphere . ... Enjoying Wednesday's transit of Mercury from Dallas, Texas, astronomer Phil Jones recorded this detailed image of the Sun. ... As a bright November Moon lit up the night sky last week, Gil Esquerdo spotted this lovely Moon halo overhead at the Whipple Observatory on...

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... Product details: . ... 2 Composition/Data on components: . ... Information pertaining to particular dangers for man and environment . ... 4 First aid measures . ... Use fire fighting measures that suit the surrounding fire. ... Measures for environmental protection: . ... This information is furnished without warranty, and any use of the product not in conformance with this Material Safety Data Sheet, or in combination with any other product or process, is the responsibility of the user. ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Stars . ... Space Flight . ... Some 13.7 billion years ago, a mere millionth of a second after the Big Bang, the first hydrogen and helium nuclei condensed out of a hot, dense soup of quarks and gluons. ... In the very last few kilometres some of the light was scattered by a myriad of water droplets (containing hydrogen nuclei which had existed almost since the Big Bang) slowly descending through the air following a rainshower. ...

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... AstroAsciiData is a Python module to handle ASCII tables. ... The idea to develop this Python module emerged from the fact that ASCII tables continue to be one of the most popular and widely used data exchange formats in astronomy and probably science in general. ... To load this ASCII table, go into Python, load the AstroAsciiData module and read in the table with: . ... demo = asciidata.open('webexa.txt') . ... Users who only want to work with ASCII tables neeed no further python modules. ...

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grdsample - Resample a grd file onto a new grid grdsample in _ grdfile -G out _ grdfile [ -F ] [ -I dx [ m|c ][/ dy [ m|c ]] ] [ -L flag ] [ -N nx / ny ] [ -Q ] [ -R west / east / south / north [ r ] ] [ -T ] [ -V ] grdsample reads a grdfile and interpolates it to create a new grdfile with either: a different registration ( -T ); or, a new grid-spacing ( -I ) or number of nodes ( -N ), and perhaps also a new sub-region ( -R ). ... G The name of the output grd file. ... Default is grid registration]. ...

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How do you recognize life? Whether on Earth or in space, looking for living organisms?or evidence of life ? ... Spacecraft have already been to Mars, the moon and numerous other places in the solar system, but we haven't found life anywhere yet. ... In general the tests will scan for the same types of evidence as we would look for to detect Earth microbial life: . ... The first thing that will be done with samples is to 'look' for visual signs or chemical evidence of life. ...

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This is the new output format generator. ... It works as such: The user will ask for format "output:html" with option "style=booklist". ... This is an output format. b) The "output" module's broken out format is the canon format. So the fromcanon and explode routines do nothing but return what they are given. c) The style module will return a single string. ... It takes as input a record in canon format. ... The charset used is canon. 4. bp-output.pl A new format module. ... bp-output.pl | ...

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... Author(s) (name or initials are given before family name); . ... Every entry in the list should give full list of authors (initials are printed after names) (for collections editor(s)), full title of book, collection and paper. ... Type - Times New Roman 12 pt (for the exceptions indicated below: title, list of authors, names of Institutions, names of sections should be printed in bold). ... Title of paper, list of authors, names of Institutions, formula, tables and pictures are centered. ... Name ....

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... This program was created for correlating chosen regions in the series of fts images. ... Chosen regions' . ... In this section the program counts the integral for each region of the grid for each image. ... As a matter of fact, the integral is total brightness of the region and it is counted by 'int_tabulated' IDL function. ... In addition, the program will show the count of the regions which correlate with the corresponding region (the brighter region means the bigger count) and its contour. ...

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Follow-up astrometry and recoveries are made with the ANU 40 inch (1.0-m) f/8 reflector at Siding Spring Observatory (IAU code 413). ... A routine follow-up of 2003 WY153 on 2003 Dec 15 became much more than routine when a faint object with unusual motion vector was found close to the target asteroid. ... During routine astrometry with the 1.0-m to improve the orbit of the Apollo asteroid 2004 CB, the asteroid was found on March 30 to have a short tail! ... Siding Spring Survey Main Page . ...

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... 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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Symbolic circuit-matrix processor and evaluator . ... This software is reliable over the range of benchmark circuit complexity (both *.CIR and *.MAT file). ... SYMBOL is a symbolic-algebra package which in contrast to REDUCE, MACSYMA, MAPLE, MATHEMATICA, MathLAB, MathCAD and other known multi-purpose systems is especially intended for analysis of any lumped, linear, time-invariant circuit. ... pure ASCII text . ... CIRSYM - SYMbolic CIRcuit processor used to format ASCII text file *.out for CALCSYM. ...

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Eyepieces Forum Message . ... Post . ... Grease Stains On EP . ... Post Message | ... Posted by Chris Deceu on May 21, 2003 10:49:22 UTC . Despite all the care I take in handling my eyepieces, two grease stains (I suppose it's grease) and other little particles of dust cover the glass multicoated lenses. ... www.astronomy.net . About Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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New NexStar GPS Commands Mike Swanson swanson.michael@usa.net http://www.angelfire.com/ns/nexstar Tracking Rate Commands 1. ... The tracking rate returns to the hand control default (usually sidereal) after any of the following: after approximately 20 seconds with no action from the PC or the user after pressing any of the arrow buttons on the hand control To prevent this automatic return to default tracking, you must set the tracking mode to Off prior to issuing a new tracking rate command. ...

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... 1 2 3 4 5 6 7 8 9 10 Symbol V V V 4 3 2 V Description Vertical register transfer clock Vertical register transfer clock Vertical register transfer clock Substrate clock GND Vertical register transfer clock Protective transistor bias GND Output circuit supply voltage Signal output Pin No. ... 5 The setting value of the substrate voltage (VSUB) is indicated on the back of the image sensor by a special code. ... Lag Adjust the signal output value generated by strobe light to 200mV. ...

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... From the chain visibility point of view, it is very recommended to look at the Javascript movies , especially if the frame rate can be not regulated in your MPEG player. ... The non-CH-associated large-scale chains visible on the SOHO/EIT images at three wavelengths of 171, 195 and 284 as well as on the MLSO/HAO He I 10830 spectroheliogram of December 16, 1997. ... The SOHO/EIT movies at 171 and 195 show the chain dynamics on June 1-3, 1998. ... Javascript movie (230 KB), SOHO/EIT, 171 . ...

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... THANK YOU NASA. ... I decided to return to a full-time job (after a 15-year hiatus raising my children). I took a civil service exam, was called the next day and assigned as a GS-5 to the Flight Operations Division, NASA Space Task Group, to Chris [Christopher C.] Kraft and Charles [W.] Mathews (Chief) located in separate buildings, on the West Side of Langley Air Force Base. ... Chris Kraft was also the Mission Flight Director for the Mercury Astronauts. ... Return to JSC Oral History Website . ...

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