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This section contains a series of hands-on tutorials to learn how to work with different aspects of the SDSS data. If you are unsure what kind of SDSS data or which SDSS survey is best for your science, then go the the <a href="/mappers/">mapper overview</a> page: this page contains short descriptions with links for more details on all SDSS surveys (on-going and completed).</p> <h2 class="wp-block-heading">DR18 tutorials</h2> <p>If you want to work with the targeting data released in DR18, then we recommend that you interact with these catalogs in <a rel="noreferrer noopener" href="https://skyserver.sdss.org/" target="_blank">SkyServer</a>. There are several examples of SQL searches available for both Black Hole Mapper and Milky Way Mapper on the <a rel="noreferrer noopener" href="https://skyserver.sdss.org/dr18/SearchTools/sql#" target="_blank">SkyServer SQL Search</a> page. If you are unfamiliar with SQL, you will also find more general examples and tutorials on that page.</p> <p>We have tutorials available on parameter files, fits files, and using bitmasks, and a page with conversions between our wavelength and magnitude systems and other systems. You will find these linked on the right-hand side of this page.</p> <h2 class="wp-block-heading">Tutorials for previous data releases</h2> <p>If you want to work with data that was released in SDSS-IV or earlier, then check the <a href="/dr18/completed_surveys/">Completed Surveys </a>page for direct links to data descriptions, caveats, and relevant tutorials. Completed surveys include:</p> <ul class="wp-block-list"> <li><a href="https://sdss4.org/dr17/imaging" target="_blank" rel="noreferrer noopener">Imaging</a> legacy survey (SDSS-I/II)</li> <li><a href="http://classic.sdss.org/supernova/aboutsupernova.php" target="_blank" rel="noreferrer noopener">Supernova Survey</a> (SDSS-II)</li> <li><a href="https://www.sdss4.org/dr17/spectro/" target="_blank" rel="noreferrer noopener">SEGUE</a> (SDSS-II) and <a href="https://www.sdss4.org/dr17/spectro/" target="_blank" rel="noreferrer noopener">SEGUE-2</a> (SDSS-III)</li> <li><a href="https://www.sdss4.org/dr17/marvels/" target="_blank" rel="noreferrer noopener">MARVELS </a>(SDSS-III)</li> <li><a href="https://www.sdss4.org/dr17/spectro/" target="_blank" rel="noreferrer noopener">BOSS </a>(SDSS-III) and <a href="https://www.sdss4.org/dr17/spectro/" target="_blank" rel="noreferrer noopener">eBOSS</a> (SDSS-IV)</li> <li><a href="https://www.sdss4.org/dr17/irspec/" target="_blank" rel="noreferrer noopener">APOGEE</a> (SDSS-III) and <a href="https://www.sdss4.org/dr17/irspec/" target="_blank" rel="noreferrer noopener">APOGEE-2</a> (SDSS-IV)</li> <li><a href="https://www.sdss4.org/dr17/manga/" target="_blank" rel="noreferrer noopener">MaNGA</a> (SDSS-IV)</li> <li><a href="https://www.sdss4.org/dr17/mastar/" target="_blank" rel="noreferrer noopener">MaStar</a> (SDSS-IV</li> </ul> <p>You can also find an overview page of SDSS-IV tutorials on the <a rel="noreferrer noopener" href="https://www.sdss4.org/dr17/tutorials/" target="_blank">SDSS-IV tutorials</a> page.</p> <p></p> <figure class="wp-block-image size-full"><img fetchpriority="high" decoding="async" width="1024" height="382" src="/wp-content/uploads/2023/01/milky-way-for-databox.png" alt="" class="wp-image-2741" srcset="https://www.sdss.org/wp-content/uploads/2023/01/milky-way-for-databox.png 1024w, https://www.sdss.org/wp-content/uploads/2023/01/milky-way-for-databox-300x112.png 300w, https://www.sdss.org/wp-content/uploads/2023/01/milky-way-for-databox-768x287.png 768w" sizes="(max-width: 1024px) 100vw, 1024px" /></figure> </div> </div> </article> </main> </div> <div class="columns__md-4"> <div class="sidebar__inner"> <aside id="secondary" class="widget-area sidebar-1 h-center-upto-md" aria-label="Sidebar"> <section id="nav_menu-40" class="widget gx-card-content u-b-margin widget_nav_menu"><h3 class="widget-title">Tutorials</h3><nav class="menu-tutorials-container" aria-label="Tutorials"><ul id="menu-tutorials" class="menu"><li id="menu-item-1329" class="menu-item menu-item-type-post_type menu-item-object-page current-menu-item page_item page-item-519 current_page_item menu-item-1329"><a href="https://www.sdss.org/dr18/tutorials/" aria-current="page">Tutorials Overview</a></li> <li id="menu-item-1421" class="menu-item menu-item-type-post_type menu-item-object-page menu-item-1421"><a href="https://www.sdss.org/dr18/tutorials/par/">Parameter Files</a></li> <li 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