About: http://webisa.webdatacommons.org/451883243

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	With an Astrotrac, your concern is more what focal length you can use before the tracking is a problem.
http://www.w3.org/ns/prov#wasQuotedFrom	cloudynights.com