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QHYCCD QHY8L-C Instruction Manual

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QHY8L-C

Instruction Manual

1/4/13
1

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Summary of Contents for QHYCCD QHY8L-C

  • Page 1: Instruction Manual

    QHY8L-C Instruction Manual 1/4/13...

  • Page 2: Table Of Contents

    Table of Contents Connection and Safety Instructions ......3 Driver Installation and Software Quick Start Guide ..7 Set the GAIN and OFFSET ........... 13 Image Calibration ............14 Camera Attachment ........... 17 Camera Parameters ........... 20 Accessories and Interface Specification ..... 22 QHY8L Mechanical Dimensions .........

  • Page 3: Connection And Safety Instructions

    Chapter 1. Connection and Safety Instructions 1. The larger surface area of the CCD chip and cooling system make it more fragile than a small or medium sized CCD. Take extra care when transporting and using the device. 2. Do not block the cooling vents. 3.
  • Page 4 For the overflow problem of the SONY CCD chip, you can install mechanical shutter. If you need a mechanical shutter, please consult QHYCCD or your area dealer. 8. Chip moisture problems. In certain relative humidity conditions, when the temperature is lower than the dew point, dew or frost will appear on the surface;...
  • Page 5 This is due to the temperature of the window being too low. Please use the following method if you encounter this problem. Install M42 to M42 heater which produced by the QHYCCD. The heater can raise •...
  • Page 6 work, please reduce the power gradually if the cooler power is high, and turn off the power of the camera. 12. Clean the surface of CCD If dust particles impact your images, you can open the front of the camera to clean the surface of the CCD.

  • Page 7: Driver Installation And Software Quick Start Guide

    Chapter 2. Driver Installation Software Quick Start Guide Quick Start and Driver Installation Please download the latest version driver for the QHY8L, double click the driver • installation program, and wait for it complete. Using USB cable to connect the camera and your computer (do not connect the •...
  • Page 8 Click live button, Click the area of the image to get a more precise target. At • this point, it will show the analytic curve in the screen view column and a 5X zoom focus image. While it is exposing, the FWHM column will show the width of star and the peak intensity of the star.
  • Page 9 Set exposure time at the bottom of the CCD control window, click START button • to shoot one picture. Nebulosity Please download the latest version of the ASCOM platform. If it has the latest • UPDATE, please download it together. Install ASCOM and UPDATE. •...
  • Page 10 Click “Live View” for focusing and framing. Click Shoot to capture an image or • use the Plan function. Note that for single exposures, time information is to be entered in the box to the lower right. Be aware that focusing with this program is a bit difficult because of the long time between image refreshes on the screen when in live view mode.
  • Page 11 (16 vs 8 bits per pixel). However color FITS images, such as those produced by the QHY8L-C, will usually appear in greyscale when first loaded by an image editor. To convert them to color, it is necessary to invoke a software routine.
  • Page 12 below). Separate color layers (R,G,B) can also be created as separate FITS files using the File, Save Color Components command. In AstroArt, load FITS image from camera, select “Color” from top menu, then • “CCD color synthesis”. Make sure XY Offset values are both set to 0. Then click OK.

  • Page 13: Set The Gain And Offset

    4. Under this GAIN value, repeat steps 1-2 to obtain more accurate OFFSET value. Note: For some QHYCCD products when you use bin modes of 2*2, 3*3, 4*4, images may reach 65535 even the gain is 0, so you just set the gain to 0.

  • Page 14: Image Calibration

    Chapter 4 Image Calibration Images of stars, nebulae, etc. taken by the camera are called “light images”. Image calibration means calibrating the CCD with a BIAS field, a DARK field, and a FLAT field so to remove artifacts and nonuniformities from the light images. This includes removing thermal noise of the CCD, dark spots caused by dust on the surface of the CCD and elsewhere in the optical train, and variations in brightness caused by vignetting.
  • Page 15 DARK DARK image refers to the image in which exposure time is the same as the light images. You need to avoid any light entering into CCD when you are shooting. Therefore, you need to cover the lens cap of camera. The exposure time is set to be the same with formal shooting time, and then use the low speed, 1*1 shooting mode to shoot 10~50 DARK images.
  • Page 16 Type Length Temp Optical Typical histogram train Lights Darks Same as Same Binning Similar to bias lights same as Lights lights Bias Shortest Binning possible same as lights Flats Long Same as enough to lights, get white including level 20-30K binning...

  • Page 17: Camera Attachment

    Chapter 5 Camera Attachment The QHY8L can be used with both telescopes and lenses. The methods of attaching the camera to telescopes and lenses are given below. 1. Direct attachment to telescope. Simply insert the image end of the camera into a 2”...
  • Page 18 2. Attachment using drawtube adapter. If desired, an adapter can be screwed into the camera, and then inserted into the drawtube. The adapter shown in Figure 3 has 42mm threads that mate with those in the camera, and is 5 cm long. It fits into a standard 2”...
  • Page 19 shows a 50mm Canon lens attached to the lens adapter, prior to attachment to the camera. Figure 7 shows the camera with the lens attached. Figure 8 shows the lens adapter (not included with the QHY8L camera but available from astronomy equipment retailers).

  • Page 20: Camera Parameters

    Chapter 6 Camera Parameters 6.0 mega pixel APS One shot COLOR CCD Main Features Total pixels: 3110 x 2030 • Active pixels: 3032 x 2016 • Pixel Size: 7. 8um x 7. 8um square • Color method: RGB BAYER film on CCD •...
  • Page 21 CCD sensor. the QHY8L using a Two field readout sensor. After exposure the Red and half of green pixels are readout first, then the blue and another half of green pixels are readout. QHYCCD uses technology to keep the two field exposure period the same.

  • Page 22: Accessories And Interface Specification

    Chapter 7 Accessories and Interface Specification Accessories (included with camera):...
  • Page 23 QHY8L Interface Specification:...

  • Page 24: Qhy8L Mechanical Dimensions

    Chapter 8 QHY8L Mechanical Dimensions...

  • Page 25: Clip Installation

    Chapter 9 Clip Installation 1. Clip for QHY8L/QHY8PRO/QHY10/QHY12 camera...
  • Page 26 2. Before installing the clip 3. Unscrew two screws at the back of the camera...
  • Page 27 4. Screw two M3*8 copper cylinders to the camera 5. Plug in the camera's USB cable and power cable...
  • Page 28 6. The front of the clip 7. The back of the camera...
  • Page 29 8. Install the clip Note:You should use the standard Belkin USB cable, otherwise the clip cannot be installed or USB cable cannot be attached.

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