diff --git a/database.cpp b/database.cpp
index bc60a1e..427a36b 100644
--- a/database.cpp
+++ b/database.cpp
@@ -154,7 +154,7 @@ int Database::checkVersion()
     return -1;
 }
 
-static QStringList nameFilters = {"*.fit", "*.fits", "*.xisf"};
+static QStringList nameFilters = {"*.fit", "*.fits", "*.fz", "*.xisf"};
 
 static int countFiles(const QDir &dir, QStringList &scannedDirs)
 {
diff --git a/filesystemwidget.cpp b/filesystemwidget.cpp
index 7d1a06b..c97b7bd 100644
--- a/filesystemwidget.cpp
+++ b/filesystemwidget.cpp
@@ -57,7 +57,7 @@ Filetree::Filetree(QWidget *parent) : QTreeView(parent)
     m_rootDir = settings.value("filetree/rootDir", QDir::homePath()).toString();
     m_fileSystemModel = new FileSystemModel(this);
     m_fileSystemModel->setRootPath(m_rootDir);
-    m_fileSystemModel->setNameFilters({"*.fits", "*.fit", "*.xisf", "*.jpg", "*.jpeg", "*.png", "*.cr2", "*.nef", "*.dng"});
+    m_fileSystemModel->setNameFilters({"*.fits", "*.fit", "*.fz", "*.xisf", "*.jpg", "*.jpeg", "*.png", "*.cr2", "*.nef", "*.dng"});
     m_fileSystemModel->setNameFilterDisables(false);
     if(settings.value("filetree/showHidden", false).toBool())
         m_fileSystemModel->setFilter(m_fileSystemModel->filter() | QDir::Hidden);
diff --git a/loadrunable.cpp b/loadrunable.cpp
index 67f8b6d..395ccd7 100644
--- a/loadrunable.cpp
+++ b/loadrunable.cpp
@@ -501,7 +501,7 @@ bool loadImage(const QString &path, ImageInfoData &info, std::shared_ptr<RawImag
         ret = loadRAW(path, info, rawImage);
         qDebug() << "LoadRAW" << timer.elapsed();
     }
-    else if(path.endsWith(".FIT", Qt::CaseInsensitive) || path.endsWith(".FITS", Qt::CaseInsensitive))
+    else if(path.endsWith(".FIT", Qt::CaseInsensitive) || path.endsWith(".FITS", Qt::CaseInsensitive) || path.endsWith(".FZ", Qt::CaseInsensitive) || path.endsWith(".FTS", Qt::CaseInsensitive))
     {
         ret = loadFITS(path, info, rawImage, planar);
         qDebug() << "LoadFITS" << timer.elapsed();
diff --git a/mainwindow.cpp b/mainwindow.cpp
index e5cd4e4..08de390 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -62,7 +62,7 @@ MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent)
         _openFilter.append(" ");
         nameFilter.append(mimeType.suffixes());
     }
-    _openFilter.append("*.fit *.fits *.xisf *.cr2 *.cr3 *.nef *.dng)");
+    _openFilter.append("*.fit *.fits *.fts *.fz *.xisf *.cr2 *.cr3 *.nef *.dng)");
     _openFilter.append(tr(";;All files (*)"));
     nameFilter.append({"fit", "fits", "xisf", "cr2", "cr3", "nef", "dng"});
     QImageReader::setAllocationLimit(0);