Telescope & Instruments :: SARG
The scientific detector will be a mosaic of
two thinned back illuminated CCD's covering an Area of 27X55 mm² with a pixel size of
13.5 µm². In particular the SARG project ahead acquired one of the two chips and it is
purchasing a second one (delivery expected for the end of November). The characterization
of the EEV 4280 chip was made in the Catania Observatory Laboratory for Detectors
.
More particulars can be found in Scuderi et al. (PDF Size: 346 Kb; 5 Pages).
In March 2000 the CCD Mosaic was mounted and successfully tested in SARG Laboratory at Padova.
In Table 1 most of the CCD sensor characteristics are summarized while the measured QE of both the CCD are shown here.
| CCD1 (EEV 42-80) | CCD2(EEV 42-80) | |
| Format | 2048X4096 | 2048X4096 |
| Pixel Size | 13.5 µm | 13.5 µm |
| Array Size | 27.6X55.3 mm² | 27.6X55.3 mm² |
| Technology | ||
| Type | Thin | Thin |
| QE @ 400 nm | 0.94 | 0.94 |
| QE @ 600 nm | 0.85 | 0.85 |
| QE @ 900 nm | 0.30 | 0.30 |
| Uniformity@ 400 nm | 0.015 | 0.015 |
| Uniformity@ 600 nm | 0.022 | 0.022 |
| Uniformity@ 900 nm | 0.026 | 0.026 |
| Linearity | <0.03 | <0.03 |
| RON | ||
| Dark Current | 7 e-/pix/h | TBD |
| Full Well Capacity | 150,000 e- | 150,000 e- |
| Dinamic Range | ||
| Sensitivity (Typical) | 4µV/e- | 4µV/e- |
| CTE | 0.999998 | TBD |
| Cosmic Rays | ||
| Fringes |
Send comments to claudi@pd.astro.it