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STT-1603
판매가격 :상담요망
제조사 :SBIG
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Product Description

hotprodlogo2013-78x0No compromises. Our mid-sized STT Series cameras offer features and specifications found in no other astronomy camera – of any size. Drawing on all of our previous experience and the best of each of our previous designs over the years, the STT represents the culmination of everything that the amateur has asked for in an imaging system, packed into a 4.9 x 4.9 x 2.9 inch body. Standard features include: Two-stage cooling with a temperature delta greater than -50C with air only; water cooling ready; USB 2.0 and Ethernet on every camera; full frame buffer; fast low-noise readout of an 8.3Mp CCD in less than one second; MAR coated sapphire chamber window; self-guiding in front of the filters; remote guide head support; optional adaptive optics; and more.

s_tClick here to read the full review of the STT-8300M in Sky & Telescope Magazine.

Compare these STT features with any other camera:

  • Ethernet and USB 2.0
  • Built-in Web Server
  • Full Frame Image Buffer
  • 2-Stage TE Cooling > -50C delta T with air
  • Liquid Cooling Capability Standard for greater cooling
  • Twin Variable Speed Fans
  • High Accuracy Temperature Control
  • Built-in Frost Detection
  • Built-in RBI Pre-flash
  • External Triggers In / Out
  • Power Management System
  • 12VDC Operation
  • Lowest Noise 10Mhz Readout (<1 sec download)
  • High Precision 8-position Filter Wheel Option
  • Accepts 1.25″ and 36 mm filters
  • Even-illumination (photometric) shutter
  • Multi-coated Sapphire Chamber Window
  • Optional Self-Guiding in Front of filters
  • Optional Remote Guide Head
  • Optional Adaptive Optics (AO-8T)
  • User Rechargeable Desiccant Plug
  • Status, Power and Relay Indicators
  • Windows and Mac Control Software

Micron-Precision Filter Wheel / Guider

fw_detent_close2-1-308x0The filter wheel design for the STT series sets it apart. The carousel holds eight 36mm filters and inserts are available for 1.25″ filters. Two new unique features make this an imager’s delight: First, the design incorporates a self-guiding CCD in the filter wheel cover so that light from the guide star is captured before passing through the filters. An optional filter wheel cover is available for wide angle imaging with Nikon or Canon 35mm camera lenses, or for anyone who does not need or want the built-in self-guiding. Full sets of 36mm LRGB and Narrowband filters are available for unvignetted imaging at any f/ratio. The second unique feature of the STT filter wheel is a positive centering mechanism that precisely re-positions and firmly holds filters in exactly the same position over the CCD every time, regardless of a loss of power or intervening movement of the filter wheel.

fw_close1_red1-287x0In our tests of the new design, using an STT-1603M, the re-positioning of the filters was accurate to better than 5.4 microns after several complete rotations of the filter carousel. This degree of precision means that flat fields taken after the filter has moved and returned are accurate to a single pixel. An example of the improvement in flat fields with this kind of precision is demonstrated in the comparison images below.

flatfield2

                                                       Precision flat-fielding with utlra-accurate indexing

The image at left, above, is a large opaque spot on a filter in STT filter wheel. The filter carousel was rotated several times before the filter was moved back into the optical path and a flat field was taken. The image at right shows the resulting flat field image.

Even-Illumination Shutter

A mechanical shutter is included to facilitate dark frames. This is a necessity for anyone operating remotely; even if remotely means a few feet away from the telescope. Since the early days of the original ST-7 camera, SBIG has been providing even-illumination shutters in stt_shutter-293x0our cameras, something not found in the majority of other cameras made for astrophotography. “Even-illumination” means that the shutter mechanism is designed to open and close in such a manner that it does not change the proportion of light falling on the sensor due to the shape or motion of the shutter itself. This is what one finds for instance with an iris type of shutter that opens-up starting at the center and closes over the center last. In the STT-1603M we use a simple and very robust shutter wheel. The STT shutter sweeps over the CCD without leaving any area of the sensor exposed for a different period of time than any other area. Another benefit of the rotating disk type of shutter is that it has only one moving part – the motor. These motors are extremely reliable and can operate for millions of exposures without failure. In 15 years with thousands of cameras in the field taking millions of exposures, this shutter design has proven itself better than we can describe. Our design is accurate, proven and reliable. Even-illumination shutters are also referred to as photometric shutters because they produce flat frames of photometric quality. This is extremely important when taking twilight flats or any flat field image using short exposure times. The effect is demonstrated in the twilight flat field images shown below:

iris1

The left image shows a twilight flat field image taken with a camera using an iris type shutter. The right image is a flat field image taken under the same conditions using our even-illumination type shutter.

Efficient 2-Stage TE cooling

pin_fin_array1-322x0The STT uses two-stage TE cooling, twin variable-speed fans and a highly efficient pin fin array heat sink that has proven itself in the STX design. Pin fin heat sinks are more expensive than typical parallel fin type heat sinks, but offer more efficient heat dissipation in a given space. In our tests of prototype models, the cameras reached an average delta greater than -50C in five minutes and an average maximum delta of -57C in less than 10 minutes using air cooling only. And, while is should not be necessary to use water cooling in most circumstances, if it should be desired, the STT series cameras include water cooling capability as standard equipment. It is not necessary to buy an expensive add-on or separate back. Simply supply water to the adjustable fixtures on the side of the camera body to obtain further cooling or to run the TE cooler without the fans.

Standard Autoguider Output Port

The guider port on the STT-1603M is the same “ST-4 style” as on our other cameras, using a modular telephone type 6-pin jack to connect to the user’s mount when using the camera as an autoguider.  The internal drivers used in the STT-1603M design are opto-isolated, so that no external relay box is required with any mount.

12VDC Operation

The STT Series cameras come with its own universal AC power supply.  This supply will operate from 100-240VAC and provides 12VDC at 3.5A to the camera. The STT-1603M also has a built-in voltage regulator and can be powered directly from any unregulated 12V (10 – 14 volts) source such as a battery for operation in the field.

ao8Optional AO-8T Adaptive Optics

All STT models can operate with the AO-8T Adaptive Optics accessory.  The AO-8T uses a tip-tilt window to quickly and precisely adjust the image position in response to autoguider feedback.  With Adaptive Optics there is no backlash, stiction, or lag, and the movements are precise and accurate.  This allows the AO-8T to not only remove the effects of periodic error, drift, and wind gusts, but also reduce the effects of atmospheric seeing.

For more information please see AO-8T.

Included Carrying Case

A deluxe carrying case is included with each camera.


Additional Information

A/D Converter

16 bits

Adaptive Optics Option

Y

Antiblooming

n

CCD Size

13.8 mm x 9.2 mm

Computer Interface

USB2 /Ethernet

Cooling Delta

55 °C

Dark Current e/p/s at 0 C

0.1 e-/p/s

Exposure

0.12-3600 sec

Filter Size

36mm / 1.25″

Filter Wheel Option

y

Full Well Capacity

100,000 e-

Imaging CCD

KAF-1603

Imaging / Pixel Array

1536 px x 1024 px

Internal Tracking CCD

n

OAG Option

n

OS Compatibility

Windows 32 and 64 bit OS, Mac

Peak QE

80

Pixel Digitization Rate

8 MPix/sec

Pixel Size

9 μm

Power

12 VDC

Power Cable

US, European

Read Noise

15 e-

Remote Guide Head

y

Self-Guiding Filter Wheel

y

Shutter

Mechanical, Even-illumination

Temperature Regulation

y

Total Pixels

1.6 million pixels

Weight

1.7 lbs

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