I lend some similarity between the "first light" of a telescope and the launching of a ship. The hull is complete, there are still a lot of amenities and second-work to do. But already, but most is the moment of truth for the designer of the craft, which carried by the wave, will reveal the relevance of the calculations and / or approximations that led to its realization.
That sixteen years of this, I had striven, in a newspaper yet far more difficult today to rub two glass disks against each other dozens of hours. Objective of such obstinacy : The making of a telescope with a mirror 250 mm in diameter. Four years ago, my friend Philippe Tosi accepted with enthusiasm that it is customary to touch the mirror I had in the fire of my youth, wearing a hyperbolic profile when it is the parable must dictate rigorously establishing its subtle concavity. The goldsmith truculent done fine work, but two years went by until I do take the August view of a surface layer of aluminum to the care of Legrand Rabastens-de-Bigorre.
Another two years, and here I am finally able to consider building an observatory preserved under the sky of the Gers. Deep motivation that the gratification of his childhood dreams! So I set out to achieve a robust pace of octagonal tube. Hour workshop where I am denied the use of establishing shots, the only pen that I was manipulating me for being that carried the plot elements of the cuts on wood or steel. Manufacture groping in the memory of a first embodiment designed in 1994.
August 17, first test: the telescope in precarious position gives me rosy pictures of the moon to bed now, but it is impossible to assess the fine detail due to the sharp deterioration CAUSED the extremely low position of the star.
Yesterday evening, 25 August, after the early realization of a support azimuthal comes the moment of the first observations worthy of the name. Despite the atmospheric turbulence that accompanies the onset of a light southerly wind already guessed where the furnace tomorrow, details abound on the moon, and I am literally fascinated by the details that reveal themselves, and too rare at too brief respite from the hectic atmosphere on Jupiter's disk. Then came the Pleiades and the Perseus double cluster, then sleep eyes misted over with stars and distant worlds. Some images
:
A little edge centered on the Moon crater Petavius.
Jupiter and two of its satellites (click to enlarge).
telescope photographed the moonlight (photo taken by show of hands, laying of 0.8 s, iso 8000, 50/1.7!)
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