Moravian Instruments G3-16200 User Manual
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Moravian Instruments G3-16200 User Manual

G3 series
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G3 CCD Camera
User's Guide

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Summary of Contents for Moravian Instruments G3-16200

  • Page 1 G3 CCD Camera User's Guide...
  • Page 2 Version 3.3 Modified on April 3 , 2018 All information furnished by Moravian Instruments is believed to be accurate. Moravian Instruments reserves the right to change any information contained herein without notice. G3 CCD cameras are not authorized for and should not be used within Life Support Systems without the specific written consent of the Moravian Instruments.

  • Page 3: Table Of Contents

    Table of Contents Introduction....................4 G3 Camera Overview................6 CCD and Camera Electronics..............9 CCD Chip..................12 Model G3-1000................12 Model G3-6300................13 Model G3-11000.................13 Model G3-11000C...............13 Model G3-16200.................14 Model G3-16200C...............14 Camera Electronics................14 Model G3-1000................15 Model G3-6300................15 Model G3-11000.................15 Model G3-16200.................16 Cooling and power supply..............17 Power Supply..................18 Mechanical Specifications..............20...

  • Page 4: Introduction

    Introduction Thank you for choosing the Moravian Instruments CCD camera. G3 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 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.

  • Page 6: G3 Camera Overview

    G3 Camera Overview G3 camera head is designed to be easily used with a set of accessories to fulfill various observing needs. Camera head itself is manufactured in two different variants: Camera with internal filter wheel with 5 positions for 2” or D50 mm ●...
  • Page 7 Illustration 1: Schematic diagram of the G3 camera system components...
  • Page 8 Components of G3 Camera system include: 1. G3 camera head with internal filter wheel 2. G3 camera head capable to control External Filter Wheel 3. External Filter Wheel “S” size (7 positions) 4. External Filter Wheel “L” size (9 or 7 positions) 5.

  • Page 9: Ccd And Camera Electronics

    CCD and Camera Electronics G3 series of CCD cameras are manufactured with two kinds of OnSemi (formerly Kodak) CCD detectors: G3 cameras with OnSemi KAF Full Frame (FF) CCD ● architecture. Almost all Full Frame CCD detector area is exposed to light.
  • Page 10 G3 cameras with OnSemi KAI Interline Transfer (IT) ● architecture. There is a shielded column of pixels just beside each column of active pixels on these detectors. The shielded columns are called Vertical registers. One pulse moves charge from exposed pixels to shielded pixels on the end of each exposure.
  • Page 11 G3 camera models with FF CCD architecture: Model G3-1000 G3-6300 G3-16200 G3-16200C CCD chip KAF-1001E KAF-6303E KAF-16200 KAF-16200 Resolution 1024×1024 3072×2048 4540×3640 4540×3640 Pixel size 24×24 μm 9×9 μm 6×6 μm 6×6 μm CCD area 24.6×24.6 mm 27.7×18.4 mm 27.2×21.8 mm 27.2×21.8 mm...

  • Page 12: Ccd Chip

    These cameras are able to acquire color image in single exposure, without the necessity to change color filters. On the other side color mask brings lower sensitivity and limits the capability to perform exposures using narrow-band filters etc. Because each pixel is covered by one of three basic color filters, it is necessary to compute (interpolate) remaining two colors for each pixel, which of course limits resolution of color image.

  • Page 13: Model G3-6300

    24×24 μm Pixel size Imaging area 24.6×24.6 mm Full well capacity Approx. 220 000 e- Output node capacity Approx. 650 000 e- Dark current 17 e-/s/pixel at 0°C Dark signal doubling 5.5 °C Model G3-6300 G3-6300 model uses 6 MPx OnSemi KAF-6303E Standard Class CCD chip. Resolution 3072×2048 pixels 9×9 μm...

  • Page 14: Model G3-16200

    Model G3-16200 G3-16200 uses 16 MPx CCD OnSemi KAF-16200. Resolution 4540×3640 pixels Pixel size 6×6 μm Imaging area 27.2×21.8 mm Full well capacity approx. 41 000 e- Dark current 0,08 e-/s/pixel at 0°C Dark signal doubling 5.7 °C 2800× Model G3-16200C G3-16200C uses 16 MPx CCD OnSemi KAF-16200 with color (Bayer) mask.

  • Page 15: Model G3-1000

    Sub-frame readout Arbitrary sub-frame Computer interface USB 2.0 high-speed 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 G3-1000 Gain 3 e-/ADU (1×1 binning) 5 e-/ADU (other binnings)

  • Page 16: Model G3-16200

    Model G3-16200 Gain 0.6 e-/ADU (1×1 binning) 1.0 e-/ADU (other binnings) System read noise 10 e- (Low noise) 11 e- (Preview) Full frame download 24.5 s (Low noise) 18.8 s (Preview)

  • Page 17: Cooling And Power Supply

    Cooling and power supply Regulated two-stage thermoelectric cooling is capable to cool the CCD chip from 45 to 50 °C below ambient temperature, depending on the camera type. The Peltier hot side is cooled by a fans. The CCD chip temperature is regulated with ±0.1 °C precision.

  • Page 18: Power Supply

    Maximum temperature difference between CCD and ambient air may be reached when the cooling runs at 100% power. However, temperature cannot be regulated in such case, camera has no room for lowering the CCD temperature when the ambient temperature rises. Typical temperature drop can be achieved with cooling running at approx.
  • Page 19 1. Power consumption is measured on the AC side of the supplied 12 V AC/DC power supply. Camera consumes less energy from 12 V power supply than state here. 2. The camera contains its own power supplies inside, so it can be powered by unregulated 12 V DC power source –...

  • Page 20: Mechanical Specifications

    Mechanical Specifications Compact and robust camera head measures only 154 mm (approx. ×15 ×65 inches) for the model with standard cooling without internal filter ×6×2.6 wheel. Enhanced cooling increases camera depth by 11 mm and internal filter wheel adds another 12.5 mm. The head is CNC-machined from high-quality aluminum and black anodized.

  • Page 21: Camera Head Dimensions

    Enhanced cooling head 1.8 kg (G3-EC without filter wheel) weight 2.1 kg (G3-EC with internal filter wheel) 2.7 kg (G3-EC with “S” external filter wheel) Camera head dimensions Illustration 7: G3 camera front view (both standard and enhanced cooling)
  • Page 22 Illustration 8: G3 camera with standard cooling and internal filter wheel side view Illustration 9: G3 camera with standard cooling and internal filter wheel bottom view...
  • Page 23 Illustration 10: G3 camera with enhanced cooling and internal filter wheel side view Illustration 11: G3 camera with enhanced cooling and internal filter wheel bottom view...
  • Page 24 Illustration 12: G3 camera front view (both standard and enhanced cooling) with “S” size external filter wheel...
  • Page 25 Illustration 13: G3 camera with standard cooling and “S” size external filter wheel side view Illustration 14: G3 camera with standard cooling and “S” size external filter wheel bottom view...
  • Page 26 Illustration 15: G3 camera with enhanced cooling and “S” size external filter wheel side view Illustration 16: G3 camera with enhanced cooling and “S” size external filter wheel bottom view...

  • Page 27: Telescope Adapters

    Telescope adapters Various telescope and lens adapters for the G3 cameras are offered. Users can choose any adapter according to their needs and another adapters can be ordered separately. It is possible to choose among various telescope/lens adapters: 2" barrel adapter Adapter for 2"...
  • Page 28 Adapter with inner thread M68×1 thread ×1. adapter Canon EOS lens Standard Canon EOS adapter bayonet adapter. Canon EOS clip lens Canon EOS bayonet adapter adapter with the possibility to insert “clip” filter. Can be used on cameras with internal filter wheel only.

  • Page 29: Off-Axis Guider Adapter (Oag)

    T-thread (M42 adapter or M42 1 adapter cause vignetting when used ×0.75) × with cameras equipped with large sensors. Also common coma correctors (often equipped with T-thread) cause vignetting with this large chip. G3 cameras with 24×36 mm CCD require using of M68 1 adapter.

  • Page 30: Attaching Camera Head To Telescope Mount

    Illustration 17: G3-OAG on the camera head Attaching camera head to telescope mount G3 cameras are equipped with two “tripod” 0.250-20UNC threads on the top side of the camera head. This thread can be used to attach 1.75 inch “dovetail bar”...

  • Page 31: Camera Head Color Variants

    Camera head color variants Camera head is available in several color variants of the center plate. Visit manufacturer's web pages for current offering. Illustration 19: G3 camera color variants...

  • Page 32: Camera Maintenance

    Camera Maintenance The G3 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 33: Changing The Silica-Gel

    transparent without any color hue when it becomes wet. It is recommended to shorten replacement interval if the silica-gel is completely transparent upon replacement. If it is still yellow-orange, it is possible to prolong the replacement interval. Note: The silica-gel ability to absorb moisture depends on the ambient temperature. If the camera is located in the environment with below freezing point temperatures, drying of the CCD cold chamber can take up to several days.
  • Page 34 recommended to keep the desiccant container cap off for a couple of hours when the camera is in the room with low humidity. This helps drying the CCD chamber interior and prolongs the silica-gel exchange interval. G3 revision 2 cameras cameras supplied in 2016 and later are ●...

  • Page 35: Changing Filters

    Illustration 21: Optional cap, containers with a slot and containers for tool- less manipulation, versions for the standard and Enhanced Cooling cameras Changing Filters It is necessary to open the camera head to change filters or the whole filter wheel of the G3 camera. Opening the head is quite simple – it is just necessary to unscrew she eight bolts, which holds the camera head together.
  • Page 36 Illustration 22: Filters can be changed after opening the camera case front shell After removing the screws carefully turn the camera head by the telescope adapter upward. Gently pull the front part of the case. Notice there are two cables, connecting the filter wheel motor and the filter position optical bar, plugged into the electronics board.

  • Page 37: Changing The Whole Filter Wheel

    Illustration 23: Filter positions in the G3 filter wheel Changing the Whole Filter Wheel The whole filter wheel can be changed at once. It is necessary to remove the front part of the camera case the same way as in the case of changing filters. The filter wheel can be removed when you unscrew the bolt on the center of the front part of camera case.

  • Page 38: Power Supply Fuse

    Power Supply Fuse The power supply inside the camera is protected against connecting of inverted- polarity power plug or against connecting of too-high DC voltage (above 15 V) by a fuse. If such event happens and the cooling fans on the back side of the camera do not work when the camera is connected to proper power supply, return the camera to the service center for repair.

This manual is also suitable for:

G3-6300G3-11000G3-11000cG3-16200cG3-1000

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