. Computer Ephemeris. Sidereal time. Explanations. Each row contains at 0h of Universal time: month, day, real sidereal time (hours, minutes, seconds), mean sidereal time (only seconds, as a rule, hours and minutes are the same as in real time) and nutation in right ascension: long periodic (with periods greater than 35 days), and then short periodic (periods less than 35 days). Standard IAU 1980 nutation theory is used.

... STIS Model Line Spread Function vs Aperture at 240 nm Rel pixel 0.1x0.03 0.2x0.06 0.2x0.2 6x0.2 -8.629 0.0001 0.0001 0.0001 0.0001 -8.525 0.0001 0.0001 0.0001 0.0002 -8.421 0.0001 0.0001 0.0002 0.0002 -8.317 0.0001 0.0001 0.0002 0.0002 -8.213 0.0001 0.0001 0.0002 0.0002 -8.109 0.0002 0.0002 0.0002 0.0002 -8.005 0.0002 0.0002 ...

... Contents . ... Sidereal time . ... Mean longitude of the Moon, mean elements of the Moon's orbit and equator . ... Ephemeris for physical observations of the Sun . ... Ephemeris for physical observations of the Moon . ... Matrix elements for conversion to CIRS . ... Conversion of mean time to sidereal time (with accuracy 0.01 s ) . ... Conversion of sidereal time to mean time (with accuracy 0.01 s ) . ... Conversion of mean time to sidereal time (with accuracy 0.001 s and 0.0001 s ) . ...

... LST causes SCHED to assume that all input times are in local sidereal time. ... Otherwise, a station name can be given to allow scheduling in lst for some other station. When LST is specified, there are two ways to specify the date. DAY can be used to specify the (modified?) local sidereal day number as found on the VLA monthly schedules. ... In this case, SCHED will figure out when on that calendar day the local sidereal time specified for a scan occurs. ... Default: Not used if not given. ...

Mapping and GALFA Erasing striation with linked scans Linked scan options with ALFA A new gridding technique Josh Goldston, ґ Carl Heiles & Snezana Stanimirovic Two modes of `Linked Scanning' Sept 2004 ALFA June-August 2004 LBW Least-square gain fitting using intersections is a success! ... Both TW and BW are useful techniques -- BW scans are much more flexible w/ ALFA -- Advanced gridding techniques are available ...

Display a title and clear the screen} display _title( Solar and sidereal Times) {Which way round do we wish to convert ?} ask_for_character ( Convert from solar to sidereal [Y or N],yn,c1) if (c1=Y) set_string (s1, sidereal ) set_string (s2, solar ) end_if if (c1!Y) set_character(c1,Y) ask_for_character (....... from sidereal to solar [Y or N],yn,c1) if (c1=Y) set_string (s1, solar ) ...

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. ...