Instruments
Tomo-e Gozen
2k CCD
[To 2kCCD Page (Japanese)]
Specifications of 2kCCD Camera
[Detecter]
| Array Detector | SITe 2048*2048 TK2048E |
| Pixel Size | 24um*24um |
| Frame Size | 48mm*48mm (FOV: 50 arcmin * 50 arcmin) |
| Data Size | 8MB/frame FITS |
| Recommended Exposure Time | 5 sec < exposure time < 60 min |
| Operating Temperature | about 170K |
| Dark Current | 1 electron /60min/pixel (170K) |
| Pedestal (or Bias) | 4,270ADU |
| Readout Noise | 23 e- |
| Conversion Factor | 3.4 e- /ADU |
| Linearity | gumma=0.998642 (500<ADU<40,000) |
[Filters and Limiting Magnitudes]
| Filter-band | Johnson U | Johnson B | Johnson V | Cousins R | Cousins I |
| Sky (mag/sec2) | 21 | 22 | 21 | 19 | 18 |
| Limiting Magnitudes (mag) (S/N=10, 15min exposure, seeing=3arcsec) |
20 | 21 | 22.5 | 21 | 21 |
| Throughput (%) (including optics) |
3.1 | 17 | 30 | 32 | 20 |
[Dewar and Controller]
| Filter | Johnson-Cousins UBVRI 10cm square |
| Filter Turret | 12 filters |
| Dewar Window | HOYA-N50 (Diameter 100mm) |
| Shutter | COPAL Diameter 80mm |
| Refrigerator | Refrigerator (IWATANI S007:77K, 8W) 1st.stage 5W@77K, 2nd.stage 1W@20K |
| Temperature Controller | Lakeshore model 330m |
| Temperature Variation | Bias <0.4K/night (<20ADU/night) |
| CCD Controller | Messia III ADC/Clock (made in Kiso Observatory、ADC 4chan、 instrument 24chan) |
| Camera Control | SUN Sparc-4/5 (96MB memory、8GB HDD) |
1k CCD
The 1kCCD is the second CCD camera in Kiso Observatory. This had been opened for many astronomers since April 1993. The 1kCCD was retired in 1997.
Specifications of 1kCCD Camera
| Detector | TI Japan TC215 1024*1024pixel |
| Field of View | 12.5 arcmin * 12.5 arcmin |
| Readout Noise | 13-14e- |
| Conversion Factor | 0.88 [e-/ADU] |
| Pedestal (or Bias) | 5900ADU |
KONIC (Kiso Observatory Near Infrared Camera)
[To KONIC Page (Japanese)]
Specifications of KONIC
| Array Detector | Mitsubishi 1040*1040 PtSi CSD |
| Pixel Size | 17um*17um |
| Resolution | 1.06arcsec/pixel |
| Filling Factor | 0.53 |
| Operating Temperature | about 60K |
| Dark Current | <12e-/sec (@ 56.5K) |
| Pedestal(or Bias) | 4200ADU |
| Recommended Range | >8000ADU |
| Readout Noise | 30e- |
| Conversion Factor | 6e- |
| Quantum Efficiency | 8.0+-0.9% @1.25μm 4.5+-0.4% @1.65μm 2.0+-0.3% @2.15μm |
| Linearity | within 1% : <3.5×105e-(<60000ADU) |
| Defective Pixels | <0.001% |
| Effective Image Area | < diameter 20 arcmin |
| Filters | J, H, K short, (option Polarizer) |
| Refrigerator | IWATANI Cryo-mini D-105) 1st.stage 5W@77K, 2nd.stage 1W@20K |
| Temperature Control | Temperature controller Lakeshore model330 |
| Temperature Stability | <0.1K |
| Camera Controller | Messia II (customized for NIR observation) |
| A/D conversion | ANALOGIC ADC4344M(16bit 1MHz) |
Plate Measurong Machines
PDS micro densitometer
Introduced in 1985. This is operated with PC9801. Output data are recorded in 2400 feets magnetic tape in 1600bpi.
(see Tokyo Astron. Obs. Report, Vol.20, No.4, p.674, 1986)
| densitometer | PDS 2020 GMS micro densitometer |
| Maximum Plate Size | 50cm*50cm |
| Maximum Speed | 50mm/sec |
| Maximum Sampling Rate | 50,000data/sec |
| Density Range | 0.0-5.0D |
| Density Resolution | 0.001D(12bits) |
| Position Resolution | 1um |
XY Measuring Machine
You can use a software "PDSP" for measuring with this machine. "PDSP" was developed in Kiso Observatory for data analysis.
(see Kiso Information Bulletin, Vol.2, No.3, 1986)
| Maximum Plate Size | 40cm*40cm |
| Coordinate accuracy | +-1.3um |
| Image Format | 512 * 512 * 8 bits |
| Automatic Measuring Mode | Available |
| Output data | recorded in floppy disk |
Photographic Facilities
- Automatic Plate Processor
- Sheet Film Processor (SCREEN LD-142-CT)
Film capacity up to 60cm width.
(see Kiso Information Bulletin, vol.2, No.3, 1986) - Sheet Paper Processor (FUJI FPSB 1460C)
Paper capacity up to 35.6cm width. - Film Processor (JOBO AutoLab ATL2)
Available for 35-mm and sheet monochrome/color films. - ART GRAPHICA 601 Enlarger
Available for both film and paper.
Capacity up to 50cm*40cm.
Magnification range from 25% to 400%. - Enlargers
Available for 35-mm and sheet monochrome/color films of up to 4 inches * 5 inches.