Ottens' edition of Remmet Teunisse Backer's scarce and interesting Dutch produced celestial chart, which shows the consellations in a Mercator-projection type format, allowing for the constellations of both the northern and southern hemispheresto appear on a single projection.
A chart of measurements organized by zodiac sign is shown in the lower portion of the chart. First issued by Remmet Teunisse Backer in 1709.
The Ottens brothers, Reiner and Joshua, operated a successful printing partnership in the mid-eighteenth century (fl. 1726-1765). They began the venture in 1726, publishing maps and other prints as “R & I Ottens.” They specialized in the reprinting of others’ work, especially Guillaume De L’Isle. In 1750, Reiner died; his soon, also Reiner, took his place, but the firm began listing their works as “Joshua & Reiner Ottens.” The firm lasted until Joshua’s death in 1765. Joshua’s widow, Johanna de Lindt, sold their remaining stock of plates in 1784.