Fused Silica (Quartz) performs an awesome thermal expansion coefficient of 5.4 x 10-7/℃ , 6 time less than borosilicate glasses, harder enough to allow better figuring process and advantage in terms of strength to density ratio.
First test of the Astrograph Control Software using a smartphone via WIFI. For more informations on our Astrographs, please visit our website: www.italiantelescopes.net The Control Software is full Ascom Alpaca compliant.
The first three f/4 correctors are ready. They are 126 mm of optical diameter (about 5″) and have three elements, one of wich is an ED lens.
This high-end design corrector is the core of our new optical design and thanks to this the optical performances are so awesome (see Optical Performances).
The primary and secondary mirrors are ready too, and autocollimation tests will start very soon. The f/8 correctors lenses are ready too and they are waiting to be mounted.
All the electronic boards of the TI45 Astrograph are under test and debugging
All the electronic boards of our new TI45 astrograph are now under test and debugging. They will control the 4″ field rotator, the four primary mirror cover shutters, all the sensors, fans, heaters on board, the power outputs, etc.
They will be integrated in the TI 45 Astrograph body.
Two executive projects of correctors for f/4 (Modified Harmer Wynne configuration) and f/8 (Corrected Cassegrain configuration) of our TI 45 Astrograph were frozen.
Optical performance is now arising better improved. Results and charts as follows:
Four sets for four TI 45 Astrographs are ready to be tested!
Each set includes: four DC motors with planetary gearbox for the primary mirror shutters and one small stepper motor with planetary gearbox for the 4″ integrated field rotator.
We are happy to announce all electronic boards to be soon on-board of the new TI 45 Astrograph are ready to be assembled and tested.
The entire electronics is based on a main board, a small board to control the field rotator and a board that takes care of the shutters. The firmware and the software is under development.
Here are the two blanks Schott Suprax 8488 ready for polishing. They are 456 mm in diameter (to have a useful diameter of 450 mm) and 50 mm thick. They will be processed with parabolic shape at f/3. These mirrors are made for the first two prototypes of TI 45 Astrographs.