place Location

latitude 30° 10' 3.8'' S
Longitude 70° 48' 18.58'' W

NARIT is developing the Thai Southern Hemisphere Telescope (TST), at the Cerro Tololo Inter-American Observatory (CTIO). The 0.7-meter telescope, operated in collaboration with the University of North Carolina at Chapel Hill.

The location, in the Coquimbo region of the Republic of Chile, provides some of the world's best conditions for astronomical observation. The region's high desert climate provides stable, dry air that results in consistently excellent seeing and visibility.

devices Instruments

0.7m CDK700 Telescope System

  • Pinpoint stars out to a 70mm image circle
  • Dual Nasmyth focus, allowing simultaneous mounting of two instruments or easy switching between visual and imaging use
  • Direct-drive motors on each axis for smooth, fast, and virtually silent movement of the telescope
  • High resolution encoders on each axis for precise positioning
  • Zero backlash
  • Zero periodic error
  • PointXP mount modeling software
  • Field de-rotator / rotational field framing
Optical Design Corrected Dall-Kirkham (CDK)
Aperture 700 mm (27.56 inch)
Focal Length 4540 mm
Focal ratio 6.5
Central Obstruction 47% of the Primary Mirror Diameter
Back Focus 305 mm (12 inch) from Mounting Surface
Weight 1,200 lbs
Optical Tube Dual truss structure with Nasmyth focus
Optical Performance 1.8 micron RMS spots [25mm on-axis] (400 to 900nm) 4.4 micron RMS spots [21mm off-axis] (400 to 900nm) 6.8 micron RMS spots [35mm off-axis] (400 to 900nm) Spot Diagram  
Dimensions 93.73" H x 43.25" W x 39" D    
Optimal Field of View 70 mm (0.86 degrees) / 51.6 arcminute
Focus Position Nasmyth Focus
Fully Baffled Field 60 mm
Image Scale 22 microns per arcsecond

CCD Camera

PlaneWave is an authorized dealer for Finger Lake Instruments Cameras and can provide all the most popular cameras including the ProLine Series.

ProLine sets the standards in key performance areas that include: Download Speeds, Cooling, Low Noise Operation, Anti-Ghosting Technology, Image Quality, and Linearity. ProLine download speeds are fast while maintaining low-noise frame quality. ProLine achieves outstanding cooling without water assist. Simply set the ProLine cooling where you want it and the camera will do the rest – quickly and without worries. ProLine frame quality is second to none thanks to careful design, implementation and setup. All cameras are assembled in our clean room under exacting conditions and must pass a battery of tests before being shipped.

Camera 1 Andor’s iKon-M 934 BV CCD Camera

iKon-M 934 Specifications
Sensor CCD42-40
Array Size 1024 x 1024
Pixel Size 13 μm
Typical Maximum Cooling -100º C Below Ambient
Typical Download Speeds @ 16-bit 5, 3, 1, 0.05 MHz
Typical System Noise 2.9 e- RMS @ 500 kHz
Nonlinearity <1%
Operating Environment -30º C - 45º C | 10% - 90% Relative Humidity
Sensor Manufacturer NIR broadband
CCD Type Back Illuminated
Mega Pixels 1.0
Sensor Diagonal 27.6 mm
Linear Full Well 100,000 e-
Typical Dark Current 0.2 e-/pixel/sec.
Blooming Protection None
Available Shutters 65 mm
Shutter MTBF 1,000,000
Power 12v
Interface USB 2.0
Dimensions 6.2 x 6.2 x 3.8 (157.48 x 157.48 x 96.52)
Filter Wheel FLI-CFW-3-20



Our color filter wheel’s robust mechanical design provides the basis for stunning, uncompromising images. Each FLI color filter wheel is precision engineered with a highly accurate no-slip drive chain and stepper motor. The large diameter pivot pin and bushings are precision ground and matched for smooth, quiet no-fuss operation night after night. FLI color filter wheels do not use internal lights for homing, so your images are protected from stray light interference.

  • Number of Filter Wheels: 1
  • Number of Filter Positions: 20
  • Filter Thickness Range: 1.0 - 5.0 mm
  • Filter Size: 28mm diameter
  • Overall Thickness (less motor): 21.5 mm
  • Camera Side Connection: 2.930" Pocket
  • Optical Side Connection: 3.005" - 24 UNS-2B
  • Weight: 6.9 lbs

Filter Available : Empty, Lum, Red, Green, Blue, U-Bessell, B-Bessell, V-Bessell, R-Bessell", I-Bessell, u-Sloan, g-Sloan, r-Sloan, i-Sloan, z-Sloan, Sii/8, RG-Clear