A guild hall of the Guild of Astrologers in Anvil's middle class district. This guildhall should use M furniture and have a separate room for the guildmaster, shared accommodations for the lower-ranking members, a number of desks and work areas, a printing press (for the published almanacs), and a folded telescope (like the ones on the balcony).
Claimant should feel free to create generic books for the almanacs.
From Infragris' minor guilds document:
The Astrologers study the heavens, moons and the sun, with a special focus on birthsigns and the significance of the constellations.
The guild publishes accredited almanacs listing weather forecasts, proper planting and sowing times, tide tables, celestial events such as eclipses or the different times on which the sun and moons rise and set throughout the year, projections for the path of the Serpent constellation, and the dates of various religious festivals.
Besides general almanacs for the common people, the guild also makes specialized versions for farmers, sailors and mages - the latter listing auspicious dates for rituals and summoning dates for the Daedra.
Individual astrologers also provide personal horoscopes, and are often asked to determine and interpret the birthsign of newborn children. Some wealthy merchants and nobles keep court astrologers as part of their retinue of advisors.
The Astrologers Guild is also known to create star-maps and navigational instruments which are very useful for sea voyages. As such their guildhalls are often found in port cities. Many also come to the guild to acquire fine lenses and other optical instruments for scholarly research or various industrial applications.
Astrology should by all means not be confused with the science of astrolothurgy, a rather obscure and hermetic scholarly discipline preoccupied with the nature and mechanical influence of the Magna-Ge on the mortal world. While some astrologers also dabble in astrolothurgy (much like many mages and scholars dabble in astrology for professional reasons), the latter is considerably more advanced and sometimes associated with the Psijic Endeavor.