In the [[amateur astronomy]] field there are many types of commercial and [[Amateur telescope making|amateur built]] telescopes are designed for [[astrophotography]] and labeled "astrographs". Optical designs of amateur astrographs vary widely but include [[apochromatic]] [[Refracting telescope|refractors]], variations of Cassegrain reflectors including [[Ritchey–ChrétienCassegrain telescope|Ritchey–Chrétienreflector]]s, and [[Dall–Kirkham telescope|Dall–Kirkham]] designs, or [[Newtonian reflector]]s. Most optical designs do not produce large, flat, and well-corrected imaging fields and therefore require some type of optical correction by way of [[Field flattener lens|field flatteners]] or [[Coma (optics)|coma]] correctors. Amateur astrographs typically have purpose-built focusers, are constructed of thermally stable materials like carbon fiber, and are pairedput withon heavy duty mounts to facilitate accurate tracking of deep sky objects for long periods of time.{{citation needed|date=July 2016}}
