| Version 2 (modified by , 11 years ago) ( diff ) |
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Mirror Alignment of the FACT telescope
Our FACT telescope has a multi mirror reflector of 30 single hexagonal mirror facets. To feed our G-APD camera with high resolution images, the reflector's mirrors have to be aligned. The mirror alignment is about the mirror's position and it's orientation.
Mirror Position
The mirror position is fixed in directions perpendicular to the telescope's optical axis by the honeycomb grid of the mirror facets. The crucial position left is the distance of the mirror's centre to the centre of the camera window. The distance between the mirror centre and the camera window centre is determined using a LASER distance meter. As decided on our General Meeting 2014 in Dortmund, we will set this distances to obtain a hybrid reflector. A hybrid reflector is partly a Davies Cotton design and partly a Parabola design. This was chosen to improve temporal resolution.
Status of Hardware for position determination
| Item | design | order | machining | note |
| Optical table | 100% | 100% | 75% | weight reduction |
| LASER DM (distance meter) | - | 100% | - | Bosch PLR 50, 2x (one spare) |
| LASER DM mount | 50% | 100% | 25% | motorized mount for remote control |
