Sun observations / or Michelson experiment

To observe the Sun with Telesto it is mandatory to put a cap and a filter to prevent the detector's damage (the sun is too bright to observe it without protection).
Follow these steps:

1) Take the Sun filter that is in the blue box in the control room

2) Remove the cover from the telescope

3) Place the sun filter in the white cap

4) Place the ladder close to the telescope

5) Remove the 4 butterfly screws from the telescope front (using the ladder)

6) Install the white cap and secure it with the butterfly screws

7) Place the ladder back close to the wall, where it was

8) Follow the standard procedure of the TELESTO USER MANUAL. When you point (click on 'slew') the telescope towards the sun, an error message as shown below appears. Click 'yes'. We suggest an exposure time of 0.3 s with the standard filters R,G, and B.

The apertures in the mask can be also used to do other scientific experiments.

One is used to install a Mylar filter and can be used for example for the Michelson experiment. In the latter case a ring and spring can be used to secure the mask.

The other aperture with threads make it possible to install a Coronado Fabry-Perot. This is mechanically working but has not yet been validated on sky.