- FILENAME DISK CATALOG WINDOWS HOW TO
- FILENAME DISK CATALOG WINDOWS SERIAL
- FILENAME DISK CATALOG WINDOWS MANUAL
- FILENAME DISK CATALOG WINDOWS CODE
However, the difference between the two systems (for example between J1950.
J2000.), which is very slightly different from the FK4 (e.g. The coordinate system is the FK5 (IAU 1976) system (e.g. Set the coordinate display to show mean place coordinates for a given year by using the MP command. The ROFF and DOFF commands are useful if you want to set the offsets to exactly the same values used for a particular object on a previous night, for example. Once the coordinates have been set, the display can be changed to mean place for any convenient year, or to apparent, and the telescope should continue to point accurately.
Or, enter the coordinates with the RA and DC commands and type CSET. When the star is centered on the crosshairs, adjust the offsets so that the green coordinate display agrees with the position of the star using the commands ROFF and DOFF. Toggle the pointing model off by typing “TP” again, and the green “TP” message will turn black. A green “TP” message will appear in the coordinate input box. If you will be using the telescope pointing model, make sure that TP is enabled. The coordinate display should be set to mean place for the ephemeris date. If the star is from the ephemeris, then the coordinates are mean place for the middle of the ephemeris year (e.g. Or, you may want to choose a position very close to the place you will start observing. It is a good idea to choose a star which is in a location where the residuals of the pointing model are small (the zenith is a good place). The cursor is invisible, but it is always at the end of the command string.Īt the beginning of the night, you will usually point the telescope to a bright star to check the coordinates. All system commands are entered in this box.
The command prompt is a “*” in the lower left box on the screen. The UT can be updated at any time with the UT command. If the UT time displayed is correct then just press. The user is prompted to enter the correct UT time when the program starts. Note that the UT date is initialized from the internal computer clock, which MUST be set to the correct UT date and UT time.
FILENAME DISK CATALOG WINDOWS SERIAL
The program will begin displaying telescope data as long as the computer is connected to the various serial lines, independent of the power switch on the telescope. Resetting the computer assures that the system will start each time in the proper state. The program will load automatically from the floppy disk. To start the C40 program, push the reset button (the black rocker switch just below the red power switch) on the computer, or start the computer if it is powered off. The backspace key moves the cursor back one character at time. The numeric arguments (including zero) may be negative, and the last may include a decimal point. The numeric arguments (if there are more than one) are separated by spaces spaces are permitted but not required between the command and the first numeric argument.
FILENAME DISK CATALOG WINDOWS CODE
Scroll log with up, down, left, right keys and PageUp, PageDown, Home and End keys.Īll C40 commands begin with a command code followed by up to three numeric arguments. Set message log verbose level to n (0-2).Īppend telescope positions and sidereal time to POINT.LOG. Set telescope mode for west side of mount. Set telescope mode for east side of mount. Save the current catalog to “filename” on the floppy disk.Ĭlear catalog entry n, or clear entire catalog. List the currently loaded catalog to the system log. Store the commanded RA and DEC to catalog object n. Load the coordinates of catalog object n into the commanded position.
FILENAME DISK CATALOG WINDOWS MANUAL
Set dome mode to manual and move to n.n degrees azimuth. Set the home position (zero the cumulative values). Slew the telescope (and move the dome) to dome flat position. Park the telescope at the south pole to allow easy removal of the dust cover. Slew the telescope to the position entered with the commands RA and DEC. offsets so that the coordinate display agrees with the coordinate inputs. Set the coordinate display to show corrected values according to the telescope pointing model.Ĭhange the RA and Dec. Set the coordinate display to show observed place. Set the coordinate display to show apparent place. Set the coordinate display to show mean place for the year n.n. Immediately abort any dome or telescope move.
FILENAME DISK CATALOG WINDOWS HOW TO
How to Take Date to Check or Update the Pointing Model Ian Thompson Version V1.07, 4 September 2000
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