... This is the new procedure for setting theDIS grating zerostep positions. ... Specify which gratings are in eachbay. In an mcnode session, tell the DIS which gratings are loadedwith the command . dis_define_gratings . ... dis grating n=1 type=low (e.g.) . ... dis grating n=1 col=b zerostep=280(e.g.) . ... Edit the grating names in the file/home/apotop/MC/gratings (e.g. low, medium, high). ... Multiply this number by the step/pixelscale for that color grating. The step/pixel scales are: . ...

Next: Writing FITS Up: Conversion between FITS Previous: File naming . The INTAPE -command is used to convert FITS (or IHAP) files to the internal MIDAS format: INTAPE file_list id device [flag] . where file_list is a list of absolute position numbers of files (if input is from tape) to be read with 1 being the first file ( e.g. 1, 3, 5, 50-60 would read from the 1st, 3rd, 5th file plus files 50 through 60 included), and id is an identification prefix of the names of the files created. ...

To: file From: Jon Hagen Date: 12-22-00 Subject: Azimuth (or other axis) Encoder calibration When an encoder assembly (pinion gear, arbor, flex coupling, and encoder) has been removed and repaired, the encoder position must be recalibrated (reset to its standard position). The most obvious procedure is as follows: Procedure I Move the azimuth arm to a known "cal" position, identified by a pair of scribe marks or other prearranged hardware pointers. Suppose the cal position is 360.000 degrees. ...

Kermit writes data as FITS files which are fairly standard but nonetheless there are a few details you may want to be aware of. Kermit FITS files contain an NxNxM array of 32 bit integers. ... The values stored in the 32 bit integers are the sum total of counts read at that pixel during the exposure. ... To achieve this normalization, you almost certainly want to normalize the image by dividing it by the NREADS FITS keyword value. ... The current focus position is stored as the FOCUS keyword. ...

... All the optical elements are mounted in a cryostat aimed at keeping components at a temperature of about 80 K. The focal plane masks (field stops or slits) are mounted on a wheel. ... The collimator is an achromatic doublet lens, which images the entrance pupil of the TNG and provides an almost parallel beam (F-number about 2000) at the pupil plane, where Lyot stops can be placed. Right after the pupil plane, two close wheels mount filters and grisms. ...

... Activity 3: Measuring the Position of the Sun in the Sky . Purpose: To give students the opportunity to measure the position of the Sun in the sky using simple tools and methods. ... Alternatively, you may have students devise their own methods of relative measurement and apply them to measuring the position of the Sun in the sky. ... Rangi is the sky, and when the Sun is near Rangi's head it is summer in New Zealand. ... Read the Maori story to students. ... back to Teachers' Newsletter Main Page ...

... Positions in 2000 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2001 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2002 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2003 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . Positions in 2004 - Jan - Feb - Mar - Apr - May - Jun - Jul - Aug - Sep - Oct - Nov - Dec . ...

... FIELD | ... static int . ... Field Detail static final int AREA . ... Constant Field Values . static final int MEAN . ... static final int STD_DEV . ... static final int MODE . ... static final int MIN_MAX . ... static final int CENTROID . ... static final int CENTER_OF_MASS . ... static final int PERIMETER . ... static final int LIMIT . ... static final int RECT . ... static final int LABELS . ... static final int ELLIPSE . ... static final int INVERT_Y . ... static final int CIRCULARITY . ...

Next: Reading Visibility FITS Files Up: Getting Data In and Previous: ATLOD: Reading RPFITS Files . Miriad has a single task, fits , to read and write FITS files - both visibility and image data. One significant shortcoming of fits is that it cannot work directly from a tape device - the FITS file must be on disk. ... However, to copy from tape to disk, one would use % tpcp device fits-file Here device is the tape device. ... The output is fits-file . ...

... The primary access to procedures is via the OIFITS reader ( get_oifits ), which stores the data internally in the scans and other auxilliary IDL structures. Alternatively, VLTI MIDI and AMBER data can be reduced using the MyMidiGui and MyAmberGui front ends ( http://www.eso.org/ chummel/midi/mymidigui/mymidigui.html , . ... However, internally each target must have an ID composed of a three letter catalog name (e.g. HDN or HIP), and an index into this catalog (e.g. HDN123306). ...

... subroutine omatt open output file read the OSW window parameters , binning factors from header call CAL_GetBoresightMat call OAL_GetAttitude (with time of reference frame) find OM boresight direction rotate by roll angle loop over individual source information read in individual source information extract pixel position correct for distortion (CAL_omDistortion) ... For each pair of offsets compute a maximum-likelihood parameter and take the pair with the maximum value as the best...

. To read your mail enter the command: mail . A summary of your messages, made up of mail headers is displayed. At the bottom of the screen is the mail prompt " " at which you enter the commands that allow you to read your mail. Example . Reading the top of each message . Reading other mail files .

On 1 February 2002 this Mirror was upgraded from NVSSlist v2.10 to NVSSlist v2.17 . ... This form searches the source catalog produced by the NRAO/VLA Sky Survey (NVSS). ... Object name [optional] : . ... Search radius and verification halfwidth in arcseconds [Optional] : . ... Enter a list of positions to search: . ... The contents of the NVSS source catalog and the techniques used by NVSSlist to derive error estimates and other parameters are described here. ...

Next: *wcscoord* all Up: Celestial Coordinates from Image Previous: *tvlabel, xexamine* . ... Type pixel coords in skypix . xr xspatial xs skypix .oformat = ``hours'' # to reset the default which is ``degrees''. xs skypix input coordinate system ( J2000 ): xdata$rh110267_img # the image file name output coordinate system ( J2000 ): image # to use coord conversion # in image file header or B1950 or J2000 # epoch of output can be specified input file list (STDIN): cr ...

... Tonight's Sky . ... Observing . ... Sky this Month . ... Star Atlas . ... Astronomy for Kids . ... Nearby failed stars may harbor planet . Further observations are required to confirm the existence of a planet, but it may turn out that the closest brown dwarf binary system to the Sun will be a triple system. ... Only registered members of Astronomy.com are allowed to comment on this article. ... Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. ...

... Samara region . SSAU History . SSAU roadmap . ... Events The Third Lem Reading Conference . ... September 10 - completion of reception of scientific articles for edited volume of the conference materials; . ... Proposals, suggestions and comments should be sent to Nesterov Aleksandr Yuryevich and Demina Anna Ivanovna at: lemovskiye.org@gmail.com or phil@ssau.ru marked 'The Third Lem Reading Conference' in the subject line, phone: +7 846-267- 47-87. ... Ed.) The Second Lem Reading Conference. ...

Comedi Documentation . Prev . Next . comedi_mark_buffer_read -- streaming buffer status . ... int comedi_mark_buffer_read (comedi_t * device, unsigned int subdevice, unsigned int num_bytes); . The function comedi_mark_buffer_read() is used on a subdevice that has a Comedi command in progress. This function can be used to indicate that the next num_bytes bytes in the buffer are no longer needed and may be discarded. ... comedi_get_buffer_contents . ... comedi_get_buffer_offset ...

ntptime [ -chr ] [ -e est_error ] [ -f frequency ] [ -m max_error ] [ -o offset ] [ -s status ] [ -t time_constant ] . This program is useful only with special kernels described in the A Kernel Model for Precision Timekeeping page. It reads and displays time-related kernel variables using the ntp_gettime() system call. ... Display the execution time of ntptime itself. -e est_error . Specify estimated error, in microseconds. -f frequency . ... Display times in Unix timeval format. ...

... Q 12.649 0.523 0.342 -0.108 4444 -4.647 -4.582 "n6231_ 178" 16 53 48.63 -41 51 54.1 J2000.0 ! ... A few lines are then added to the top (see readme_asc2dxf for details) to produce input for asc2dxf :in.coo: n6231cp6.dxf slot line 2.00 43.00 9.00 43.00 point 9.773 19.026 n6231 _ 171 Q 12.649 11.236 57.382 n6231 _ 178 I 14.533 ... the output of this program is as follows :n6231cp6.dxf: 0 SECTION 2 ENTITIES 0 CIRCLE 8 1 62 3 10 43.00 20 43.00 30 0.000 40 43.00 0 ...

... astro-ph . ... SAI VO . ... Whitespace-separated words are treated as AND ed. Show 10 50 100 articles per page in Full Compact mode . Normalized to: Read, M. 27 article(s) in total . 359 co-authors, from 1 to 15 common article(s). ... Barnes, David G.. ... Benjamin, Robert A.. ... Campbell, Lachlan. Campbell, R.. ... Cass, C. P.. ... Evans, C. J.. ... Evans, Neal J.. ... Floyd, David J. E.. ... Frew, David J.. ... Grand, Robert J. J.. ... Rhodes, Andrew H.. ... Smith, D. M.. ... SAI MSU . ...