... Please note the following problems and workarounds: . ... Arrow keys . Arrow keys are used in SAOtng to move the mouse or markers. ... Unfortunately, error messages are generated if both sets are defined in the SAOtng code but are not supported by X. To get around this problem, we have added the -kbprefix command switch (and the SAOTNG_KBPREFIX environment variable) to SAOtng. This switch allows you to specify which arrow keys you want to use (assuming your version of X supports both). ...

Astrophotography Forum Message . Forums: . ... Post . ... Electronic Camera? ... Post Message | ... If you put the camera on the scope with no film, open the back and set the shutter speed to 4 seconds. Will the shutter fire and the mirror come up so that you can see through the camera into the scope? ... 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" . ...

Next: Special problems Up: Reducing the observations Previous: Table file output . ... Rejected stars: These are marked with an asterisk (*) in the right margin when the residuals are listed. ... Some plots have fitted lines indicated by a series of dashes. The residual plots identify different stars with different symbols; these are given in the tables of residuals. ... Here, large fluctuations in sky brightness can occur, occasionally producing negative star intensities after sky subtraction. ...

... HST . ... Data . ... HST Overview . ... To facilitate the reduction in the residual noise, a series of post-SAA dark exposures will be automatically scheduled following SAA passage and before any NICMOS science observations. ... Post-SAA darks an be identified by the target name "POST-SAA-DARK". ... The associated post-SAA dark exposures to an observation will be automatically retrieved with the science data whenever a post-SM3B NICMOS science observation is retrieved from the HST Archive. ...

... This paper describes the main algorithms used by the Einstein Level One processing to create the exposure masks and the background maps for Einstein IPC images, and how these algorithms were recreated in the IRAF environment. Our goal was to recreate the algorithms used by the Level One Processing to create exposure masks and background maps for Einstein Image Proportional Counter (IPC) data (cf. sections 2.5 and 2.7 of Harnden et al. ...

... Meta Index / Home Page / Description / Specifying source region shapes . When radiusstyle =`contour', the task calculates the source region shape as an elliptical locus which approximates the contour of the PSF at a given flux value. ... Clearly, in order to calculate the shape of such a flux contour, it is necessary firstly to normalize the PSF to the source brightness and secondly to determine the flux level (in `brightness' units per pixel) at which to find the contour. ...

... The predictive power of current models (the so-called meteor forecasting) has given us the exact timing of the Leonid storms of 2001 and 2002 to the nearest hour and are now used to predict the arrival times of major annual showers such as the Perseids . ... Towards this goal, the Observatory has installed a sky-monitoring system, consisting of one medium angle (MA) and two wide-angle (WA) video cameras linked to software designed to detect motion. ... Bright Taurid Meteor . ... Meteors on Mars . ...

... Wavelength Calibration . ... 30s wavecal plot . 30s flatfield plot . ... HeNeAr 4400 . B rQrtz 4400 . ... HeNeAr 4500 . ... BrQrtz 4200 . BrQrtz 4500 . ... These figures in the above table show the number of counts received from each of the lamps in a 30 second exposure with the 1.5 arcsec slit. ... Users have the option of taking calibration lamp data at the rotator angle of each object, but in many cases, it should be possible to measure the shift using observations of night sky lines. ...

... This is not important for drift observations but poses a problem for any observing mode in which the telescope is moving while taking data, since the ALFA beams then will be rotating on the sky. ... The new mode is called ' sky angle tracking ' and is available for all existing observing modes. ... The next figure shows the distance between the beams in declination as a function of hour angle when the telescope is tracking a source with Dec=+10 from rise to set with a sky angle of 19 degrees. ...

... The main research task of the LRS was an investigation of interstellar medium of our Galaxy using its line emission in radio domain with the help of the gratest RATAN-600 Radio Telescope. ... The complex investigation of the Interstellar Clouds structure on the different scales and with the different radio lines for understanding of structure, dynamics and evolution of interstar gas and its interaction with other galactic constituents and the conditions for star formation. ...

. rcp: filename : No such file or directory . The file that you are trying to copy does not exist. Usage: rcp [-p] [-x] [-k realm] f1 f2 . You have failed to give the name of the source_file or the destination file . Permission denied. The local host is not permitted to connect to the remote host. Either your .rhosts file on the remote host is incomplete or there are security/authentication procedures in use at your site that prevent you from using rcp in the normal way.