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 This file lists the various sources from which data in KStars has been
 obtained.
 
 Sky Cultures:
 =============
 
 Data for non-western sky cultures was obtained from Stellarium
 (http://www.stellarium.org) and incorporated into KStars by Jérôme
 Sonrier. Stellarium is licensed under the GNU General Public License
 v2 (or above), and is thus compatible with KStars. The following are
 the original sources for the sky culture data:
 
 Chinese sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based on Hong Kong Space Museum star maps
 (http://www.lcsd.gov.hk/CE/Museum/Space/StarShine/HKSkyMap/e_starshine_hkskymap.htm).
 
 Egyptian sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based on the paper "A Map of the Ancient
 Egyptian Firmament" by Juan Antonio Belmonte.
 
 Inuit sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based primarily on the book "The Arctic Sky:
 Inuit Astronomy, Star Lore and Legend" by John MacDonald.
 
 Korean sky culture was contributed by Stellarium user : Jeong, Tae-Min
 (http://user.chollian.net/~jtm71/)
 
 Lakota sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based primarily on the book "Lakota Star
 Knowledge: Studies in Lakota Stellar Theology" by Ronald Goodman.
 
 Maori sky culture was contributed by Stellarium user : Dan Smale
 <d.smale(at)niwa.co.nz>
 
 Navajo sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based primarily on the book "Star
 Trails-Navajo" by Don Childrey.
 
 Norse sky culture was contributed by Stellarium user : Jonas Persson,
 <jonas.persson(at)mna.hkr.se>
 
 Polynesian sky culture was contributed by Karrie Berglund of Digitalis
 Education Solutions, Inc. based primarily on "Polynesian Voyaging
 Society information"
 (http://honolulu.hawaii.edu/hawaiian/voyaging/pvs/navigate/stars.html)
 
 Tupi sky culture was contributed by Stellarium user : Paulo Marcelo
 Pontes.
 
 Tongan sky culture was contributed by Stellarium user : Dan Smale
 <d.smale(at)niwa.co.nz>
 
 
 Tycho-2 Catalog
 ===============
 
 The Tycho-2 Catalog is by Erik Høg et al. The copy of Tycho-2 used in
 KStars was downloaded from the Astronomical Data Center, which was
 hosted on http://adc.astro.umd.edu
 
 The service is currently inaccessible, but at the time of download,
 the content was licensed in the public domain:
 http://adc.astro.umd.edu/adc/questions_feedback.html#policies1%22
 said:
 
 "All ADC data are public domain unless otherwise stated in the
 "ReadMe" file. The data are for scientific use only and have no
 commercial value."
 
 The internet archive "WayBackMachine" still has the old page archived
 and here is a link to the archived page on WayBackMachine showing the
 public domain policy:
 http://web.archive.org/web/20060908091808/http://adc.astro.umd.edu/adc/questions_feedback.html#policies1%22
 
 
 USNO NOMAD Catalog
 ==================
 
 The USNO NOMAD catalog was compiled by the US Naval Observatory, and
 access to the catalog is (as of April 1, 2012) available through the
 USNO website -- http://www.nofs.navy.mil/nomad/
 
 The "Privacy and Security Notice" on USNO's website
 (http://ad.usno.navy.mil/privacy.shtml) reads:
 
 "All information presented on these pages is considered public domain
 and may be distributed or copied unless otherwise specified. Use of
 appropriate byline/photo/image credits is requested."
 
 There is no explicit indication to the contrary on the NOMAD page.
 
 NOMAD was obtained for use in KStars by Jason Harris, by contacting
 Norbert Zacharias, who is designated as a contact point for questions
 about the NOMAD catalog on the USNO website.
 
 
 SAC Catalog
 ===========
 
 Part of our NGC/IC data is obtained from the Saguaro Astronomy Club
 catalog, compiled by Steve Coe.
 
 While the website seemed to indicate that the catalog is only
 available for non-commercial use (and hence incompatible with KStars),
 Akarsh Simha received a correspondence with Steve Coe, who is the
 Copyright holder of the catalog.
 
 Here are the relevant sections of the email exchange:
 
 ----------
 
 From: Steve Coe <stevecoe@cloudynights.com>
 To: Akarsh Simha <akarshsimha@gmail.com>
 Date: 18th Dec 2008
 
 Snippet:
 
 
 Akarsh;
 
 I have no problem with you using the SAC data for the Kstars program.
 It was released with the rules that it is not sold as a seperate item.
 
 -----------
 
 From: Akarsh Simha <akarshsimha@gmail.com>
 To: Steve Coe <stevecoe@cloudynights.com>
 Date: 5th May 2009
 
 Snippet:
 
 To start with, I have tried merging NGC and IC data from SAC into our
 database, and I've attached a copy of the stuff I intend to ship with
 KStars. I wiill release this in the next version of KStars if I have
 the permission to redistribute it under GPL. I would like to expand
 the dataset to include most of the data in the SAC database in the
 near future.
 
 -----------
 
 From: Steve Coe <stevecoe@cloudynights.com>
 To: Akarsh Simha <akarshsimha@gmail.com>
 Date: 5th May 2009
 
 Akarsh;
 
 Seeing as how the SAC data is available in both Sky Map Pro and Guide,
 which are "for sale" planetarium programs, I can see no problem with
 allowing you to include it in KStars.  I hope your project goes well.
 
 Take Care;
 
 Steve Coe