Building a giant aerial telescope and first observations
A great amazing thing happened at the Singlet Man’s observatory the arrival of a large objective lens of 94mm in diameter plano convex lens made by Roger C. an optican and amateur astronomer from ATS. For this I thank him very much. Its is nice lens of very good quality crown glass 5mm thickness and with a full 94mm diameter with a useful aperture of 80 and 76mm in diameter. Days prior of the arrival of the objective lens i have made the objective cell housing for the 94mm lens manly from cardboard typical of 17th century stile instruments but very nicely crafterd. Its similar to the objective lens cell for an aerial telescope made by Giuseppe Campani in Kassel at the Orangerie museum Kabinet of Astronomy. The outside decorations are from the same objective lens cell printed on cardboard. My cell has two diaphragms of 80mm and 76mm diameter all from cardboard and its fits perfectly. In a total of 5 days the cell was made, it took a long time for the glue to dr...