Updating FITS header

2024-09-30 21:19:23 +02:00
parent a43f12565d
commit da1aa4c6fc
8 changed files with 92 additions and 26 deletions
@@ -281,6 +281,7 @@ SkyPointScale WCSDataT::getRaDecScale() const
    double scaleY = haverSine(ret.point, pointY) * 3600.0;
    ret.scaleLow = std::min(scaleX, scaleY);
    ret.scaleHigh = std::max(scaleX, scaleY);
+    ret.scaleValid = true;
    return ret;
 }

@@ -413,16 +414,21 @@ SkyPointScale ImageInfoData::getCenterRaDec() const
        if(!std::isnan(scale))
        {
            ret.scaleLow = ret.scaleHigh = scale;
+            ret.scaleValid = true;
        }
        else if(!(std::isnan(focalLen) || std::isnan(pixSizeX) || std::isnan(pixSizeY)))
        {
            const double r = 206.2648097656; // (180 * 3600) / (1000 * pi) magic number to convert pixel size to focal length ratio to arcsec.
            ret.scaleLow = std::min(pixSizeX * binX / focalLen * r, pixSizeY * binY / focalLen * r);
            ret.scaleHigh = std::max(pixSizeX * binX / focalLen * r, pixSizeY * binY / focalLen * r);
+            ret.scaleValid = true;
        }
    }

-    ret.scaleLow *= 0.8;
-    ret.scaleHigh *= 1.2;
+    if(ret.scaleValid)
+    {
+        ret.scaleLow *= 0.8;
+        ret.scaleHigh *= 1.2;
+    }
    return ret;
 }