Update dawn fc notebook to write out json in the default format to be read back in by vis.py

examples/data/FC21A0038582_15170161546F6F.json

-{
-  "radii": {
-    "semimajor": 482.0,
-    "semiminor": 446.0,
-    "unit": "km"
-  },
-  "sensor_position": {
-    "positions": [
-      [
-        257924.2539548336,
-        15116.928334651788,
-        -4862688.373235127
-      ]
-    ],
-    "velocities": [
-      [
-        -104.55513398803222,
-        -85.04943875018718,
-        -5.7904352269050605
-      ]
-    ],
-    "unit": "m"
-  },
-  "sun_position": {
-    "positions": [
-      [
-        360779830121.1448,
-        246614934915.23608,
-        30596642675.886036
-      ]
-    ],
-    "velocities": [
-      [
-        47425159.85750815,
-        -69378138.7113738,
-        194.4785338852277
-      ]
-    ],
-    "unit": "m"
-  },
-  "sensor_orientation": {
-    "quaternions": [
-      [
-        0.0018484365271078176,
-        0.021392681896720694,
-        -0.2780296634557242,
-        -0.9603324646612587
-      ]
-    ]
-  },
-  "detector_sample_summing": 1,
-  "detector_line_summing": 1,
-  "focal_length_model": {
-    "focal_length": 150.08
-  },
-  "detector_center": {
-    "line": 512.0,
-    "sample": 512.0
-  },
-  "starting_detector_line": 0,
-  "starting_detector_sample": 0,
-  "focal2pixel_lines": [
-    0.0,
-    0.0,
-    71.40816909454442
-  ],
-  "focal2pixel_samples": [
-    0.0,
-    71.40816909454442,
-    0.0
-  ],
-  "optical_distortion": {
-    "dawnfc": {
-      "coefficients": [
-        9.2e-06
-      ]
-    }
-  },
-  "image_lines": 1024,
-  "image_samples": 1024,
-  "name_platform": "DAWN",
-  "name_sensor": "FRAMING CAMERA 2",
-  "reference_height": {
-    "maxheight": 1000,
-    "minheight": -1000,
-    "unit": "m"
-  },
-  "name_model": "USGS_ASTRO_FRAME_SENSOR_MODEL",
-  "center_ephemeris_time": 488002614.62294483
-}
\ No newline at end of file
+{"radii": {"semimajor": 482.0, "semiminor": 446.0, "unit": "km"}, "sensor_position": {"positions": [[257924.2539548336, 15116.928334651788, -4862688.373235127]], "velocities": [[-104.55513398803222, -85.04943875018718, -5.7904352269050605]], "unit": "m"}, "sun_position": {"positions": [[360779830121.1448, 246614934915.23608, 30596642675.886036]], "velocities": [[47425159.85750815, -69378138.7113738, 194.4785338852277]], "unit": "m"}, "sensor_orientation": {"quaternions": [[0.0018484365271078176, 0.021392681896720694, -0.2780296634557242, -0.9603324646612587]]}, "detector_sample_summing": 1, "detector_line_summing": 1, "focal_length_model": {"focal_length": 150.08}, "detector_center": {"line": 512.0, "sample": 512.0}, "starting_detector_line": 0, "starting_detector_sample": 0, "focal2pixel_lines": [0.0, 0.0, 71.40816909454442], "focal2pixel_samples": [0.0, 71.40816909454442, 0.0], "optical_distortion": {"dawnfc": {"coefficients": [9.2e-06]}}, "image_lines": 1024, "image_samples": 1024, "name_platform": "DAWN", "name_sensor": "FRAMING CAMERA 2", "reference_height": {"maxheight": 1000, "minheight": -1000, "unit": "m"}, "name_model": "USGS_ASTRO_FRAME_SENSOR_MODEL", "center_ephemeris_time": 488002614.62294483}
\ No newline at end of file