This is a media file that Houghton Library believes to be in the public domain of the United States. This applies to a work published before January 1, 1923, or the unpublished work of an author who died more than 70 years ago. Houghton Library and Harvard University claim no rights in this photographic reproduction of the work, and the image is free to download and reproduce for any use, commercial or non-commercial, without any further permission required. We request that where these media files are used, the Houghton Library is credited as the source of the materials. Please include this citation: "Typ 620.73.451, Houghton Library, Harvard University" as its source. In the event that any of the media files infringes your rights or the rights of any third parties, or file is not properly identified or acknowledged, we would like to hear from you so we may make any necessary alterations. In this event, please contact: Houghton_Library@harvard.edu.
Public domainPublic domainfalsefalse
Aquest material està en domini públic als Estats Units i als altres països on el dret d'autor s'estén per 100 anys (o menys) després de la mort de l'autor.
Public domain works must be out of copyright in both the United States and in the source country of the work in order to be hosted on the Commons. If the work is not a U.S. work, the file must have an additional copyright tag indicating the copyright status in the source country. Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Houghton_Typ_620.73.451_-_Johannes_Hevelius,_Machinae_coelestis,_1673.jpg
Llegendes
Afegeix una explicació d'una línia del que representa aquest fitxer
A 45 m (148 ft) focal length Keplerian astronomical refracting telescope built by Johannes Hevelius
Aquest fitxer conté informació addicional, probablement afegida per la càmera digital o l'escàner utilitzat per a crear-lo o digitalitzar-lo. Si s'ha modificat posteriorment, alguns detalls poden no reflectir les dades reals del fitxer modificat.