Suomi 100 satellite's images: The auroral and the star images

<p><strong>Spacecraft: </strong>Suomi 100</p> <p><br> <strong>Instrument: </strong>Camera</p> <ul> <li>White light RGB camera</li> <li>Resolution: 2048 x 1536 pixels</li> <li>Angle of view: 43.6&deg; x 33.4&deg; (horizontal x vertical)</li> </ul> <p><strong>On-board data processing</strong>:</p> <ul> <li>Debayering</li> <li>Color correction</li> <li>Gamma correction (gamma=2.2, gamma-break: 0.1)</li> <li>JPEG compression</li> </ul> <p><strong>Data</strong>: Three images</p> <p>&nbsp; &nbsp; 1. The auroral image: Original (ID: 001229, rotated 180&deg;)</p> <ul> <li>File: img001229.jpg</li> <li>Imaging time: January 22, 2019, 18:08:20 UT</li> <li>Location: 62.17&deg;N, 47.64&deg;E, 582865 m (WGS84)</li> <li>Attitude: heading -31.21&deg;, tilt 68.89&deg;, roll -1.85&deg;</li> <li>Integration time: 2.4 seconds</li> <li>Sensor gain: x128</li> </ul> <p>&nbsp; &nbsp; 2. The auroral image:&nbsp;Processed version (<em>see Knuuttila et al., JoSS, 2022, for details</em>)</p> <ul> <li>File: img001229_processed.png</li> <li>Inverted on-board data processing (excl. debayering)</li> <li>Subtracted the star image (ID: 001264) to compensate warm pixel effec</li> </ul> <p><br> &nbsp; &nbsp; 3. The original star image used for background subtraction (ID: 001264)</p> <ul> <li>File: img001264.jpg</li> <li>Imaging time: January 23, 2019, 18:13 UT</li> <li>Attitude: declination -1.3&deg;, right ascension 97.1&deg;, celestial north clock angle -21.8&deg; (J2000)</li> <li>Integration time: 1.6 seconds</li> <li>Sensor gain: x32</li> </ul>