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Related Manuals for Moravian Instruments G4-9000
Summary of Contents for Moravian Instruments G4-9000
- Page 1 G4 CCD Camera User's Guide...
- Page 2 Version 3.1 Modified on December 11 , 2016 All information furnished by Moravian Instruments is believed to be accurate. Moravian Instruments reserves the right to change any information contained herein without notice. G4 CCD cameras are not authorized for and should not be used within Life Support Systems without the specific written consent of the Moravian Instruments.
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Page 3: Table Of Contents
Table of Contents Introduction....................4 G4 Camera Overview................6 CCD and Camera Electronics..............8 CCD Chip....................9 Model G4-9000................10 Model G4-16000.................10 Camera Electronics................10 Model G4-9000................11 Model G4-16000.................11 Cooling and power supply..............12 Power Supply..................13 Mechanical Specifications..............15 Camera head dimensions..............16 Telescope adapters................17 Camera Maintenance................20 Desiccant exchange................20 Changing the silica-gel..............21... -
Page 4: Introduction
Introduction Thank you for choosing the Moravian Instruments CCD camera. G4 series of CCD cameras were developed for imaging under extremely low-light conditions in astronomy, microscopy and similar areas. Design of this series inherits from G2 and G3 cameras, with which they share precise electronics providing uniform frames without artifacts and extremely low read noise limited only by CCD detector itself. - Page 5 A simple and cheap device called USB hub can expand number of available USB port. Typical USB hub occupies one computer USB port and offers four free ports. Make sure the USB hub is USB 2.0 high-speed compatible. But keep on mind that if more USB devices connected to one hub need to communicate with a host PC, USB hub shares its single up link line to the host PC.
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Page 6: G4 Camera Overview
G4 Camera Overview G4 cameras do not allow usage of internal filter wheel as they require large 50×50 mm filters. External filter wheel is then the only option for G4 camera. There are two sizes of the external filter wheel available for the G4 cameras: Medium size wheel for 5 square filters 50×50 mm ●... - Page 7 Illustration 1: Schematic diagram of G4 camera system components...
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Page 8: Ccd And Camera Electronics
CCD and Camera Electronics G4 series of CCD cameras are manufactured with “Full Frame” CCD sensors manufactured by OnSemi (formerly Kodak) Almost all Full Frame CCD detector area is exposed to light. This is why these detectors provide high quantum efficiency. Modern FF CCD detectors are suitable also for scientific applications, even if equipped with so-called Anti Blooming Gate (ABG –... -
Page 9: Ccd Chip
G4 camera models: Model G4-9000 G4-16000 CCD chip KAF-09000 KAF-16803 Resolution 3056×3056 4096×4096 12×12 µm 9×9 µm Pixel size CCD area 36.8×36.8 mm 36.9×36.9 mm Color mask CCD Chip Quantum efficiency (sensitivity) of CCD detectors used in G4 cameras depends on the particular camera model. -
Page 10: Model G4-9000
Inherent dark current of these detectors is quite low compared to other CCD detectors, suitable for scientific applications, which results into very good signal/noise ratio. Model G4-9000 G4-9000 uses 9 MPx CCD OnSemi KAF-09000. Resolution 3056×3056 pixels 12×12 µm Pixel size Imaging area 36,8×36,8 mm... -
Page 11: Model G4-9000
USB 1.1 full-speed compatible Binning can be combined independently on both axes. Image download time and system read noise depends on the CCD chip used in particular camera model. Model G4-9000 Gain 1.5 e-/ADU (1×1 binning) 1.7 e-/ADU (other binnings) -
Page 12: Cooling And Power Supply
Cooling and power supply Regulated two-stage thermo-electric cooling is capable to cool the CCD chip up to 45 °C below ambient temperature. The Peltier hot side is cooled by a fans. The CCD chip temperature is regulated with ±0.1 °C precision. High temperature drop and precision regulation ensure very low dark current for long exposures and allow image proper calibration. -
Page 13: Power Supply
Power Supply The 12 V DC power supply enables camera operation from arbitrary power source including batteries, wall adapters etc. Universal 100-240 V AC/50- 60 Hz, 60 W “brick” adapter is supplied with the camera. Although the camera power consumption does not exceed 55 W, the 60 W power supply ensures noise-free operation. - Page 14 Illustration 4: 12 V DC/5 A power supply adapter for G3 and G4 CCD Camera Warning: The power connector on the camera head uses center-plus pin. Although all modern power supplies use this configuration, always make sure the polarity is correct if you use own power source.
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Page 15: Mechanical Specifications
Mechanical Specifications ×15 ×65 Compact and robust camera head measures only 154 mm (approx. ×6×2.6 inches). The head is CNC-machined from high-quality aluminum and black anodized. The head itself contains USB-B (device) connector and 12 V DC power plug, no other parts (CPU box, USB interface, etc.), except a “brick”... -
Page 16: Camera Head Dimensions
Camera head dimensions Illustration 5: G4 camera head front view... -
Page 17: Telescope Adapters
Illustration 6: G4 camera with internal filter wheel side view Telescope adapters The G4 cameras are supplied with standard M68 × 1 threaded adapter. The adapter itself is 14 mm thick and it contains 8 mm of the M68 thread. So the back focus distance is: 30.5 mm if the adapter is used on camera without filter wheel •... - Page 18 Illustration 7: M68×1 adapter for G4 camera with a nut Another option for G4 camera is Canon EOS lens adapter, all other standards (2” barrel, T-thread, …) cause vignetting in the case of G4 cameras, because the detectors used measure 52 mm diagonally. 1 adapter Adapter with inner M68×1 ×...
- Page 19 which is not strong enough to ensure proper position of the camera relative to the optical axis. This adapter should be used to attach smaller and lighter lenses to the camera instead. Adapters are attached to the camera body using four M3 (3 mm metric) screws. Threaded holes on the camera body are placed on the corners of 52 mm square.
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Page 20: Camera Maintenance
Camera Maintenance The G4 camera is a precision optical and mechanical instrument, so it should be handled with care. Camera should be protected from moisture and dust. Always cover the telescope adapter when the camera is removed from the telescope or put the whole camera into protective plastic bag. -
Page 21: Changing The Silica-Gel
Warning: The 120 °C limit is valid for large-grain (3 to 5 mm) silica-gel, supplied with revision 2 cameras. Silica-gel supplied with earlier revisions could be dried at 160 °C. But such high temperature can damage the large-grain silica-gel. The silica-gel used in G4 cameras changes its color according to amount of water absorbed –... - Page 22 The desiccant container can be left open without the fear from contamination of CCD chamber interior by dust. There is a very faint stainless steel grid between the CCD chamber and the desiccant container, so dust particles cannot enter the chamber itself. It is even recommended to keep the desiccant container cap off for a couple of hours when the camera is in the room with low humidity.
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Page 23: Changing The Telescope Adapter
containers for standard cameras and longer ones for Enhanced Cooling cameras. Illustration 9: Optional cap, containers with a slot and containers for tool- less manipulation, versions for the standard and Enhanced Cooling cameras Changing the Telescope Adapter The camera head contains bolt square. The telescope adapter is attached by four bolts.