calstis_2d_ccd.ipynb: commented out second image display text and rem…

…oved centering

notebooks/STIS/calstis/calstis_2d_ccd.ipynb

@@ -367,9 +367,11 @@
     "The BLEVCORR step is part of basic 2-D image reduction for CCD data only. This step subtracts the electronic bias level for each line of the CCD image and trims the overscan regions off of the input image, leaving only the exposed portions of the image. \n",
     "\n",
     "Because the electronic bias level can vary with time and temperature, its value is determined from the overscan region in the particular exposure being processed. This bias is applied equally to real pixels (main detector and physical overscan) and the virtual overscan region (pixels that don't actually exist, but are recorded when the detector clocks out extra times after reading out all the parallel rows). A raw STIS CCD image in full frame unbinned mode has 19 leading and trailing columns of serial physical overscan in the AXIS1 (x direction), and 20 rows of virtual overscan in the AXIS2 (y direction); therefore the size of the uncalibrated and unbinned full framge CCD image is 1062(serial) $\\times$ 1044(parallel) pixels, with 1024 * 1024 exposed science pixels.\n",
-    "<center>\n",
+    "<!-- <center> \n",
     "    <img src=figures/CCD_overscan.jpg width =\"400\" alt=\"Graph illustrating parallel serial overscan corresponding to wavelength in the x-axis and virtual overscan corresponding to position along slit in the y-axis.\">\n",
-    "</center>"
+    "</center> -->\n",
+    "\n",
+    "<img src=figures/CCD_overscan.jpg width =\"400\" alt=\"Graph illustrating parallel serial overscan corresponding to wavelength in the x-axis and virtual overscan corresponding to position along slit in the y-axis.\">"
    ]
   },
   {
@@ -706,7 +708,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.9.13"
+   "version": "3.8.12"
   },
   "toc": {
    "base_numbering": "0",