public StarProspects(double searchAreaDeg)
{
//Creates a list of star prospects from the associated observing list
//Set StarChart FOV to something reasonable for this search
sky6StarChart tsxsc = new sky6StarChart
{
FieldOfView = searchAreaDeg
};
//Determine if search database file exists, if not, create it
//if (!IsDBQInstalled())
//{ InstallDBQ(); }
//Load the path, open and run the selected search database query
sky6DataWizard tsxdw = new sky6DataWizard();
tsxdw.Path = GetDBQPath();
tsxdw.Open();
sky6ObjectInformation tsxoi = tsxdw.RunQuery;
//Create a star list array for population of data
//Fill in data arrays (for speed purposes)
for (int i = 0; i < tsxoi.Count; i++)
{
tsxoi.Index = i;
tsxoi.Property(Sk6ObjectInformationProperty.sk6ObjInfoProp_NAME1);
string starName = (tsxoi.ObjInfoPropOut);
tsxoi.Property(Sk6ObjectInformationProperty.sk6ObjInfoProp_RA_2000);
double starRA = (tsxoi.ObjInfoPropOut);
tsxoi.Property(Sk6ObjectInformationProperty.sk6ObjInfoProp_DEC_2000);
double starDec = (tsxoi.ObjInfoPropOut);
tsxoi.Property(Sk6ObjectInformationProperty.sk6ObjInfoProp_MAG);
double starMag = (tsxoi.ObjInfoPropOut);
DBQStar newStar = new DBQStar
{
StarName = starName,
StarRA = starRA,
StarDec = starDec,
StarMag = starMag
};
starProspectList.Add(newStar);
}
return;
}
public DBQStar OffsetCenter(DBQStar tgtStar, double imagePA)
{
/*Calculates an offset position that places the input position in the center
* of the guider FOV.
*
* Note that the bearing for moving off the target star is opposite for different
* sides of the pier. If the scope is peering over the meridian, then this wont work
* well.
*/
//Set the star chart FOV 4 times the y distance (arcmin) center of the ccd
// fov to the center of the guider fov -- not really needed but helps viewing during processing
SetStarChartSize();
// Convert target star RA and Dec to radians and place in RA/Dec structure
double tgtRA = Transform.HoursToRadians(tgtStar.StarRA);
double tgtDec = Transform.DegreesToRadians(tgtStar.StarDec);
Celestial.RADec tgtStarPosition = new Celestial.RADec(tgtRA, tgtDec);
// Compute the rotation (radians) associated with any guider FOV offset from the image PA
double gRotationR = -Math.Atan2(gfov.CenterX, gfov.CenterY);
// Increment the image PA by the guider offset
double bearingR = gRotationR + Transform.DegreesToRadians(imagePA);
// Reverse bearing if the mount is pointing east
//if (!pierEast) { bearingR = -bearingR; }
// Compute the distance beween the center of the Image FOV and the center of the Guider FOV
double distanceR = Transform.DegreesToRadians((SumOfSquares(gfov.CenterX, gfov.CenterY)) / 60.0);
// Calculate an offset position such that the guider FOV will have the target star in its center
//Celestial.RADec endPosition = Celestial.Travel(tgtStarPosition, -gVectorR, gRotationR);
Celestial.RADec endPosition = Celestial.ComputePositionFromBearingAndRange(tgtStarPosition, bearingR, -distanceR);
// Convert this position back to hours and degrees (RA and Dec) and return the result
// as a DBQStar structure
DBQStar endStar = new DBQStar()
{
StarRA = Transform.RadiansToHours(endPosition.RA),
StarDec = Transform.RadiansToDegrees(endPosition.Dec)
};
return(endStar);
}
public static void CalibrateGuider()
{
//AtGuider2 Application for automated guider camera calibration
/*
* This application locates a suitable calibration star for guider calibration,
* slews the mount to frame the star in the guider FOV,
* adjusts the guide camera exposure for the targer,
* runs a calibration.
*
*/
const double InitialGuiderExposure = 0.5; //Initial exposure level for guider camera images.
const double OptGuiderADU = 20000; //Target ADU for guide star in guider camera images.
//Open text output form
LogEvent lg = new LogEvent();
SessionControl openSession = new SessionControl();
//Lets get started...
//plate solve current location to prime target star search and to acquire image camera position angle
lg.LogIt("Plate Solving for current position and position angle");
double imagePA = PlateSolve();
lg.LogIt("Position Angle: " + imagePA.ToString("0.000"));
//Create an FOV object for the guider from the "My equipment.txt" Field of View Indicators file
lg.LogIt("Parsing My equipment.txt file for FOVI definitions");
FOVMiracles guiderFOV = new FOVMiracles();
lg.LogIt("Active Guider found: " + guiderFOV.FOVName);
//Set the chart size for something pleasant around the FOVI's
guiderFOV.SetStarChartSize();
//Find a calibration star near the current position
// that is sufficiently isolated from other similar stars
lg.LogIt("Looking for proximate star to use for calibration");
DBQStar foundStar = FindStar(guiderFOV.FOVIsolation);
if (foundStar == null)
{
lg.LogIt("No calibration star found. Try another location.");
}
else
{
lg.LogIt("Calibration star found: " + foundStar.StarName);
//Closed Loop Slew (following standard slew -- see notes) to the target guide star
lg.LogIt("Centering imaging camera on calibration star");
bool slewDone1 = SlewToStar(foundStar.StarName, foundStar.StarRA, foundStar.StarDec);
if (slewDone1)
{
lg.LogIt("Calibration star centered");
}
else
{
lg.LogIt("There was a problem centering the calibration star");
}
//Calculate a pointing position that would put the target star in the guider FOV
lg.LogIt("Calculating offset for centering star in guider FOV");
DBQStar tgtPosition = guiderFOV.OffsetCenter(foundStar, imagePA);
lg.LogIt("Offset calculated for pointing at " +
tgtPosition.StarRA.ToString("0.000") + " , " +
tgtPosition.StarDec.ToString("0.000"));
//Closed Loop Slew (following standard slew -- see notes) to that offset position
lg.LogIt("Centering calibration star in guider FOV");
bool slewDone = SlewToPosition(tgtPosition.StarRA, tgtPosition.StarDec);
if (slewDone1)
{
lg.LogIt("Calibration star centered in guider FOV");
}
else
{
lg.LogIt("Could not recenter the calibration star");
}
//plate solve current location -- not necessary but it sets up the star chart nicely for viewing
// note that we are not in such a hurry that we can't mess around a bit
lg.LogIt("Checking offset position with a plate solve");
imagePA = PlateSolve();
//Reset the chart size for something pleasant around the FOVI's
guiderFOV.SetStarChartSize();
//center the star chart on the pointing location == once again, for esthetic purposes
lg.LogIt("Recentering chart");
sky6StarChart tsxsc = new sky6StarChart
{
RightAscension = tgtPosition.StarRA,
Declination = tgtPosition.StarDec
};
//Take a guider image and adjust the exposure to an optimal level
lg.LogIt("Adjusting guider exposure to achieve ADU of " + OptGuiderADU.ToString());
double optExposure = OptimizeExposure(InitialGuiderExposure, OptGuiderADU);
lg.LogIt("Best guider exposure determined to be " + optExposure.ToString("0.00") + " secs");
//Calibrate the guider
lg.LogIt("Starting direct guide calibration");
string calDone = CalibrateGuideCam(optExposure, false); //No AO
lg.LogIt("Direct guide " + calDone);
//Calibrate the AO, if enabled
TargetPlan tPlan = new TargetPlan(openSession.CurrentTargetName);
lg.LogIt("Starting AO guide calibration");
calDone = CalibrateGuideCam(optExposure, true); // AO
lg.LogIt("AO guide " + calDone);
}
}
