diff --git a/src/open.js b/src/open.js
index 19798f8..84adbc3 100644
--- a/src/open.js
+++ b/src/open.js
@@ -56,11 +56,11 @@ function addStar() {
     backMaterial.side = THREE.BackSide;
 
     let star = new THREE.Mesh(frontGeometry, material);
-    star.receiveShadow = true;
+    star.castShadow = star.receiveShadow = true;
     coreStarGroup.add(star);
 
     let backStar = new THREE.Mesh(backGeometry, backMaterial);
-    backStar.receiveShadow = true;
+    backStar.castShadow = backStar.receiveShadow = true;
     coreStarGroup.add(backStar);
 
     let ringGeometry = generateStarRing(2, 3, 0.4);
@@ -128,8 +128,8 @@ function startOpenAnimation() {
     camera.position.z = 5;
 
     renderer = new THREE.WebGLRenderer({
-		antialias: true
-	});
+        antialias: true
+    });
     renderer.setSize(window.innerWidth, window.innerHeight);
     renderer.shadowMap.enabled = true;
     renderer.shadowMap.autoUpdate = true;
@@ -149,15 +149,15 @@ function initLighting() {
     let spotLight = new THREE.PointLight(0xffffff);
     spotLight.position.set(10, 10, 10);
     spotLight.castShadow = true;
-    spotLight.shadow.mapSize.width = 1024;  // default
-    spotLight.shadow.mapSize.height = 1024; // default
+    spotLight.shadow.mapSize.width = 2048;  // default
+    spotLight.shadow.mapSize.height = 2048; // default
     scene.add(spotLight);
 
     let spotLight2 = new THREE.PointLight(0xffffff, 0.8);
     spotLight2.position.set(-10, 0, 0);
     spotLight2.castShadow = true;
-    spotLight2.shadow.mapSize.width = 1024;  // default
-    spotLight2.shadow.mapSize.height = 1024; // default
+    spotLight2.shadow.mapSize.width = 2048;  // default
+    spotLight2.shadow.mapSize.height = 2048; // default
     scene.add(spotLight2);
 
     let ambient = new THREE.AmbientLight(0x404040);