diff --git a/mainwindow.cpp b/mainwindow.cpp
index 08de390..328dbd5 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -72,7 +72,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     infoDock->setWidget(m_info);
     infoDock->setObjectName("infoDock");
     addDockWidget(Qt::LeftDockWidgetArea, infoDock);
-    resize(800, 600);
+    resize(1024, 600);
     setStatusBar(new QStatusBar(this));
 
     m_database = new Database(this);
@@ -111,6 +111,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
 #ifdef PLATESOLVER
     _plateSolving = new PlateSolving(this);
     addDockWidget(Qt::RightDockWidgetArea, _plateSolving);
+    _plateSolving->hide();
 #endif
 
     addToolBar(Qt::TopToolBarArea, m_stretchPanel);
@@ -268,7 +269,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
     helpMenu->addAction(tr("Help"), QKeySequence::HelpContents, [this]{ HelpDialog help(this); help.exec(); });
     helpMenu->addAction(tr("About Tenmon"), [this]{ About about(this); about.exec(); });
     helpMenu->addAction(tr("About Qt"), [this](){ QMessageBox::aboutQt(this); });
-    helpMenu->addAction(tr("Check update"), this, &MainWindow::checkNewVersion);
+    helpMenu->addAction(tr("Check for update"), this, &MainWindow::checkNewVersion);
 
     setupSigterm();
     QSettings settings;
diff --git a/platesolving.cpp b/platesolving.cpp
index 107a785..386ec56 100644
--- a/platesolving.cpp
+++ b/platesolving.cpp
@@ -81,7 +81,7 @@ void PlateSolving::extractionDone()
     }
 
     _ui->stars->setText(QString::number(stars.size()));
-    _ui->hfr->setText(QString("%1 %2x%3").arg(hfr).arg(a).arg(b));
+    _ui->hfr->setText(QString("%1 Ecc:%2").arg(hfr).arg(std::sqrt(1 - (b*b)/(a*a))));
     _ui->log->appendPlainText(QString("Extraction finished in %1 ms").arg(_solvingTime.elapsed()));
 
     _ui->solveButton->setDisabled(false);
@@ -180,7 +180,7 @@ void PlateSolving::imageLoaded(Image *image)
             _ui->scaleUnit->setCurrentIndex(2);
             _ui->fovLow->setValue(pointScale.scaleLow);
             _ui->fovHigh->setValue(pointScale.scaleHigh);
-            _ui->usePosition->setChecked(true);
+            _ui->useScale->setChecked(true);
         }
         else
         {
diff --git a/scriptengine.cpp b/scriptengine.cpp
index 5d3f7b5..bc43c9a 100644
--- a/scriptengine.cpp
+++ b/scriptengine.cpp
@@ -9,6 +9,7 @@
 #include "batchprocessing.h"
 #include <fitsio2.h>
 #include "libXISF/libxisf.h"
+#include "solver.h"
 
 namespace Script
 {
@@ -25,6 +26,8 @@ ScriptEngine::ScriptEngine(BatchProcessing *parent)
     _jsEngine->globalObject().setProperty("FITSRecordModify", fitsRecordObject);
     _database->init(QLatin1String("scriptengine"));
     _semaphore.release(_pool->maxThreadCount());
+
+    _solver = new Solver(this);
 }
 
 void ScriptEngine::setParams(const QString &scriptPath, const QList<QPair<QString, QString>> &paths, const QString &outputDir)
@@ -46,6 +49,7 @@ const QString &ScriptEngine::outputDir() const
 
 void ScriptEngine::interrupt()
 {
+    _solver->abort();
     _jsEngine->setInterrupted(true);
 }
 
@@ -118,6 +122,25 @@ QJSValue ScriptEngine::getItem(const QStringList &items, const QString &label, i
     return ret;
 }
 
+void ScriptEngine::setStartingSolution(const QJSValue &solution)
+{
+    if(solution.isObject())
+    {
+        if(solution.hasProperty("ra") && solution.hasProperty("dec") && solution.property("ra").isNumber() && solution.property("dec").isNumber())
+            _solver->setSearchPosition(solution.property("ra").toNumber(), solution.property("dec").toNumber());
+        if(solution.hasProperty("pixscale") && solution.property("pixscale").isNumber())
+        {
+            double scale = solution.property("pixscale").toNumber();
+            _solver->setSearchScale(scale * 0.8, scale * 1.2, SSolver::ScaleUnits::ARCSEC_PER_PIX);
+        }
+    }
+    else
+    {
+        _solver->clearStartingPositionAndScale();
+    }
+
+}
+
 bool ScriptEngine::convert(File *file, QString &outpath, const QString &format, const QVariantMap &params, bool async)
 {
     QString path;
@@ -151,6 +174,86 @@ bool ScriptEngine::convert(File *file, QString &outpath, const QString &format,
     return true;
 }
 
+QJSValue ScriptEngine::solveImage(File *file, bool updateHeader)
+{
+    QString path = file->absoluteFilePath();
+    QJSValue ret = newObject();
+
+    if(_solver->loadImage(path))
+    {
+        if(_solver->solveImage(true))
+        {
+            auto solution = _solver->getSolution();
+            ret.setProperty("fieldWidth", solution.fieldWidth);
+            ret.setProperty("fieldHeight", solution.fieldHeight);
+            ret.setProperty("ra", solution.ra);
+            ret.setProperty("dec", solution.dec);
+            ret.setProperty("orientation", solution.orientation);
+            ret.setProperty("pixscale", solution.pixscale);
+            ret.setProperty("parity", solution.parity == FITSImage::Parity::POSITIVE);
+            ret.setProperty("raError", solution.raError);
+            ret.setProperty("decError", solution.decError);
+            if(updateHeader)
+            {
+                QString error;
+                if(!_solver->updateHeader(error))
+                    logError(error);
+            }
+        }
+        else
+        {
+            logError("Failed to plate solve image " + path);
+        }
+    }
+    else
+    {
+        logError("Failed to load image " + path);
+    }
+    return ret;
+}
+
+QJSValue ScriptEngine::extractStars(File *file, bool hfr)
+{
+    QJSValue ret;
+    QString path = file->absoluteFilePath();
+    if(_solver->loadImage(path))
+    {
+        if(_solver->extractSources(hfr, true))
+        {
+            auto stars = _solver->getStars();
+            ret = newArray(stars.size());
+            int i = 0;
+            for(auto &star : stars)
+            {
+                QJSValue starj = newObject();
+                starj.setProperty("x", star.x);
+                starj.setProperty("y", star.y);
+                starj.setProperty("mag", star.mag);
+                starj.setProperty("flux", star.flux);
+                starj.setProperty("peak", star.peak);
+                starj.setProperty("HFR", star.HFR);
+                starj.setProperty("a", star.a);
+                starj.setProperty("b", star.b);
+                starj.setProperty("theta", star.theta);
+                starj.setProperty("ra", star.ra);
+                starj.setProperty("dec", star.dec);
+                starj.setProperty("numPixels", star.numPixels);
+                ret.setProperty(i++, starj);
+            }
+        }
+        else
+        {
+            logError("Failed to extract sources from " + path);
+        }
+    }
+    else
+    {
+        logError("Failed to load image " + path);
+    }
+
+    return ret;
+}
+
 QJSValue ScriptEngine::newObject()
 {
     return _jsEngine->newObject();
@@ -579,6 +682,22 @@ QJSValue File::stats()
     return _stats;
 }
 
+QJSValue File::solve(bool updateHeader)
+{
+    if(_solution.isUndefined() || updateHeader)
+        _solution = _engine->solveImage(this, updateHeader);
+
+    return _solution;
+}
+
+QJSValue File::extractStars(bool hfr)
+{
+    if(_stars.isUndefined())
+        _stars = _engine->extractStars(this, hfr);
+
+    return _stars;
+}
+
 ScriptEngineThread::ScriptEngineThread(BatchProcessing *parent) : QObject(parent)
 {
     _thread = new QThread();
diff --git a/scriptengine.h b/scriptengine.h
index 36f4f9d..f06de48 100644
--- a/scriptengine.h
+++ b/scriptengine.h
@@ -11,6 +11,7 @@
 #include "imageinfo.h"
 
 class BatchProcessing;
+class Solver;
 
 namespace Script
 {
@@ -28,6 +29,7 @@ class ScriptEngine : public QObject
     QString _scriptPath;
     QString _outputDir;
     QList<QPair<QString, QString>> _paths;
+    Solver *_solver;
 public:
     explicit ScriptEngine(BatchProcessing *parent = nullptr);
     void setParams(const QString &scriptPath, const QList<QPair<QString, QString>> &paths, const QString &outputDir);
@@ -45,7 +47,10 @@ public:
     Q_INVOKABLE QJSValue getInt(const QString &label = QString(), int value = 0);
     Q_INVOKABLE QJSValue getFloat(const QString &label = QString(), double value = 0, int decimals = 3) const;
     Q_INVOKABLE QJSValue getItem(const QStringList &items, const QString &label = "", int current = 0) const;
+    Q_INVOKABLE void setStartingSolution(const QJSValue &solution = QJSValue());
     bool convert(File *file, QString &outpath, const QString &format, const QVariantMap &params, bool async);
+    QJSValue solveImage(File *file, bool updateHeader);
+    QJSValue extractStars(File *file, bool hfr);
     QJSValue newObject();
     QJSValue newArray(uint size);
 public slots:
@@ -86,6 +91,8 @@ class File : public QObject
     void loadFitsKeywords();
     bool mkpath(const QString &path) const;
     QJSValue _stats;
+    QJSValue _solution;
+    QJSValue _stars;
 public:
     explicit File(const QString &path, ScriptEngine *engine);
     explicit File(const QString &path, const QString &root, ScriptEngine *engine);
@@ -109,6 +116,8 @@ public:
     Q_INVOKABLE File* convert(const QString &outpath, const QString &format, const QVariantMap &params = QVariantMap());
     Q_INVOKABLE File* convertAsync(const QString &outpath, const QString &format, const QVariantMap &params = QVariantMap());
     Q_INVOKABLE QJSValue stats();
+    Q_INVOKABLE QJSValue solve(bool updateHeader = false);
+    Q_INVOKABLE QJSValue extractStars(bool hfr);
 };
 
 class FITSRecordModify : public QObject
diff --git a/solver.cpp b/solver.cpp
index 7933c65..0809383 100644
--- a/solver.cpp
+++ b/solver.cpp
@@ -3,6 +3,7 @@
 #include <QJsonDocument>
 #include <fitsio.h>
 #include <QStandardPaths>
+#include <QSettings>
 #include <wcslib/wcshdr.h>
 #include <wcslib/wcsutil.h>
 #include "rawimage.h"
@@ -15,8 +16,11 @@ Solver::Solver(QObject *parent) : QObject(parent)
     connect(_solver, &StellarSolver::logOutput, this, &Solver::logOutput);
 
     _solver->setProperty("ProcessType", SSolver::SOLVE);
-    _solver->setIndexFolderPaths(QStringList(getTenmonIndexPath()));
-    _solver->setParameterProfile(SSolver::Parameters::ALL_STARS);
+    QSettings settings;
+    setIndexFolder(settings.value("platesolving/indexPath", Solver::getTenmonIndexPath()).toString());
+    int profileIdx = settings.value("platesolving/profile", 0).toInt();
+    auto profiles = _solver->getBuiltInProfiles();
+    _solver->setParameters(profiles[profileIdx]);
 
     connect(_solver, &StellarSolver::finished, this, &Solver::finished);
 }
@@ -32,12 +36,14 @@ void Solver::setIndexFolder(const QString &indexPath)
 
 bool Solver::loadImage(const QString &path)
 {
+    if(path == _path)return true;
+
     _loaded = false;
     std::shared_ptr<RawImage> image;
     ImageInfoData info;
     if(::loadImage(path, info, image, true))
     {
-        loadImage(image, path);
+        return loadImage(image, path);
     }
     return false;
 }
@@ -85,25 +91,27 @@ bool Solver::loadImage(std::shared_ptr<RawImage> &image, const QString &path)
     return _loaded;
 }
 
-bool Solver::solveImage()
+bool Solver::solveImage(bool sync)
 {
     if(_loaded && !_solver->isRunning())
     {
         _process = SSolver::ProcessType::SOLVE;
         _solver->setProperty("ProcessType", _process);
-        _solver->start();
+        if(sync)return _solver->solve();
+        else _solver->start();
         return true;
     }
     return false;
 }
 
-bool Solver::extractSources(bool hfr)
+bool Solver::extractSources(bool hfr, bool sync)
 {
     if(_loaded && !_solver->isRunning())
     {
         _process = hfr ? SSolver::ProcessType::EXTRACT_WITH_HFR : SSolver::ProcessType::EXTRACT;
         _solver->setProperty("ProcessType", _process);
-        _solver->start();
+        if(sync)return _solver->extract(hfr);
+        else _solver->start();
         return true;
     }
     return false;
@@ -161,6 +169,7 @@ bool Solver::updateHeader(QString &error)
 
     Script::File file(_path, nullptr);
     Script::FITSRecordModify modify;
+    modify.removeKeyword("RADECSYS");
     modify.updateKeyword("CRPIX1", _stats.width / 2.0, QByteArray("x pixel coordinate of the reference point"));
     modify.updateKeyword("CRPIX2", _stats.height / 2.0, QByteArray("y pixel coordinate of the reference point"));
     modify.updateKeyword("CDELT1", cdeltx, QByteArray("X pixel size (deg)"));
@@ -185,18 +194,14 @@ bool Solver::updateHeader(QString &error)
 void Solver::setParameters(Parameters::ParametersProfile profile)
 {
     auto profileParam = _solver->getBuiltInProfiles().at(profile);
-    // TODO seems like any paralel is crashing with Qt6
     profileParam.partition = false;
-    //profileParam.inParallel = false;
     _solver->setParameters(profileParam);
 }
 
 void Solver::setParameters(const Parameters &parameters)
 {
     auto profile = parameters;
-    // TODO seems like any paralel is crashing with Qt6
     profile.partition = false;
-    //profile.inParallel = false;
     _solver->setParameters(profile);
 }
 
@@ -210,6 +215,12 @@ void Solver::setSearchPosition(double ra, double dec)
     _solver->setSearchPositionRaDec(ra, dec);
 }
 
+void Solver::clearStartingPositionAndScale()
+{
+    _solver->clearSearchPosition();
+    _solver->clearSearchScale();
+}
+
 QStringList Solver::getIndexPaths()
 {
     QStringList paths = StellarSolver::getDefaultIndexFolderPaths();
diff --git a/solver.h b/solver.h
index 8ff5859..51fcc6d 100644
--- a/solver.h
+++ b/solver.h
@@ -23,8 +23,8 @@ public:
 
     bool loadImage(const QString &path);
     bool loadImage(std::shared_ptr<RawImage> &image, const QString &path);
-    bool solveImage();
-    bool extractSources(bool hfr);
+    bool solveImage(bool sync = false);
+    bool extractSources(bool hfr, bool sync = false);
     void abort();
     const FITSImage::Solution& getSolution() const;
     const QList<FITSImage::Star>& getStars() const;
@@ -36,6 +36,7 @@ public:
     void setParameters(const SSolver::Parameters &parameters);
     void setSearchScale(double fovLow, double fowHigh, ScaleUnits units);
     void setSearchPosition(double ra, double dec);
+    void clearStartingPositionAndScale();
 
     static QStringList getIndexPaths();
     static QString getTenmonIndexPath();