The ROTSE (Robotic Optical Transient Search Experiment) telescope is dedicated to a program of rapid follow-up observations of gamma-ray bursts. ROTSE was developed as a next-generation robotic instrument by the Michigan State University and other collaborative universities. There are four ROTSE telescopes in the world. Two are located in the northern hemisphere (United States and Türkiye) and other two telescopes are located in the southern hemisphere (Australia, Namibia). Detailed information can be found at http://www.rotse.net
The latest ROTSE telescope which is called ROTSEIII-d was located at the TUG Bakirlitepe site according to a contract signed between TUBITAK and Michigan State University in 2002. Although ROTSE project is over, currently only ROTSE III-d telescope continues to follow GRB alerts and carries out observational projects proposed by Turkish astronomers.
Only one CCD camera is used at the ROTSEIII-d telescope without any filter option.
ROTSE III-d Telescope
| Optical design: | Cassegrain (modified) |
| Main mirror diameter: | 450 mm |
| Focal length: | 850 mm (with field lenses) |
| Focal ratio: | f/1.8 (main mirror) |
| Resolving power: | 0.31 arcsec |
| Image scale: | 241”/mm |
| Filter: | - |
| Dome: | Clamshell type |
ROTSE III-d CCD Camera
|
Model: |
Astronomical Research Cameras, ARC E2V CCD42-40 |
|
Sensor: |
|
|
Format: |
2048x2048 pixels |
|
Pixel size: |
13.5 micron |
|
Sensor size: |
27.6 x 27.6 mm |
|
Readout noise: |
10 e- (1 MHz) |
|
Dark current: |
0.06 e-/pixel/sn |
|
Dynamic range: |
16-bit |
|
Binning: |
1x1, 2x2, 3x3 |
|
Exposures: |
5, 20, 60 sec. (Default values, changeable) |
|
Cooling: |
Liquid, Thermocube 300 chiller |
|
Interface: |
ARC 22, f/o Timing Board |
|
Readout time: |
6 sec (full frame) |
|
Pixel scale: |
.26 arcsec/pixel |
|
Field of view: |
1.85 x 1.85 degree |
ROTSE TELESCOPES
[Australia], [United States], [Namibia], [Turkey],
Main Mirror Washing Archive
July 20, 2018
Reflection (mean): 24% before washing, 98% after washing
Surface Roughness (average): 542 Å before washing, after washing 12 Å
ROTSE ARCHIVE