[Divingduck]

I made an update for this recipe. Old cover source wasn't available since long time.

Spoiler:

##
## Written:      October 2012 (new coding)
## Version:      6.0
## Last update:  2013-07-25
##

__license__   = 'GPL v3'
__copyright__ = ''
'''
Fetch RSS-Feeds spektrum.de
'''
from calibre.web.feeds.recipes import BasicNewsRecipe
class AdvancedUserRecipe1303841067(BasicNewsRecipe):
    title                 = u'Spektrum der Wissenschaft'
    __author__            = 'Armin Geller, Bratzzo, Rainer Zenz' # Update AGE 2013-07-26
    description           = u'German  online portal of Spektrum der Wissenschaft'
    publisher             = 'Spektrum der Wissenschaft Verlagsgesellschaft mbH'
    category              = 'science news, Germany'

    oldest_article        = 7
    max_articles_per_feed = 100
    no_stylesheets        = True
    remove_javascript     = True
    remove_empty_feeds    = True
    language              = 'de'

    #conversion_options    = {'base_font_size': 20}


    #cover_url             = 'http://upload.wikimedia.org/wikipedia/de/5/59/Spektrum-cover.jpg' # from Rainer Zenz
    cover_url             = 'http://www16.zippyshare.com/scaled/52219516/file.html' # AGE 2013-07-26 new cover location

    masthead_url          = 'http://www.spektrum.de/fm/861/spektrum.de.png'

    extra_css      =  '''
                      h1 {font-size: 1.6em; text-align: left}
                      h2 {font-size: 1em; font-style: italic; font-weight: normal}
                      h3 {font-size: 1.3em;text-align: left}
                      h4, h5, h6, .heading, .hgroup {font-size: 1em;text-align: left}
                      '''

    feeds = [
              (u'Spektrum.de', u'http://www.spektrum.de/alias/rss/spektrum-de-rss-feed/996406'),
              (u'Spektrum der Wissenschaft', u'http://www.spektrum.de/alias/rss/spektrum-der-wissenschaft-rss-feed/982623'),
              (u'Gehirn & Geist', u'http://www.spektrum.de/alias/rss/gehirn-geist-rss-feed/982626'),
              (u'Epoc', u'http://www.spektrum.de/alias/rss/epoc-rss-feed/982625'),
              (u'Sterne und Weltraum', u'http://www.spektrum.de/alias/rss/sterne-und-weltraum-rss-feed/865248'),
              (u'Editional', u'http://www.spektrum.de/alias/rss/spektrum-de-editorial/996044'),
              (u'Pressemitteilungen', u'http://www.spektrum.de/alias/rss/pressemitteilungen/995265'),
             ]

    keep_only_tags = [
                        dict(name='div', attrs={'class':'border-h clearfix article-top'}),
                        dict(name='div', attrs={'class':'clearfix'}),
                        dict(name='div', attrs={'class':'bilderrahmenlinks'}),
                        dict(name='div', attrs={'class':'relcontainer'}),
                      ]

    remove_tags_after=dict(name='div', attrs={'class':['sidebar-box-head']})

    remove_tags = [
                    dict(attrs={'id':['recommend-article', 'dossierbox', 'cover', 'toc']}),
                    dict(attrs={'class':['sidebar-box-full clearfix', 'linktotop' ]}),
                  ]

Let me know, if something isn't working.