EntityQ4014785· pop 9· linked from 20 articlesaverted visionSign in to savetechnique for viewing faint objectsConnectionsAristotleEntitydigital object identifierEntityQ180686EntityQ229883EntityMessier 41Entityamateur astronomyEntitycone cellEntityrod cellEntityfovea centralisEntityPurkinje effectEntityscotopic visionEntityperipheral visionEntityCategoriesEyeObservational astronomyVision