QHY 5-III-678M CMOS camera

QHY 5-III-678M CMOS camera

Uncooled monochrome back-side illuminated CMOS camera 1/1.8-inch IMX678 CMOS sensor with 8.4 megapixels, resolution 3846 x 2180 pixels, pixel size 2.0 µm x 2.0 µm (7.7 x 4 .36mm)
Optional output of 8 or 12 bit data depth
Large internal image memory of 512 MB DDR 3
Readout noise between 3.3 e- and 0.56 e- depending on the GAIN setting
Developed as an autoguider with a very large field of view, as a high-resolution camera for planetary photography and as a high-sensitivity camera for entry-level deep-sky photography
Data transfer up to 41 frames per second (fps) at full resolution and 12-bit data depth - higher frame rates possible with smaller image sections (ROI – Region of Interest).
Fits directly into any 1.25" eyepiece mount
Stable and fast USB 3.2 Gen 1 Type C interface (please note: The camera is only powered with the included USB 3.2 cable!
"Anti-Amplifier Glow Control" technology to reduce the readout glow against the amplifier during long exposures
With the latest heat dissipation technology and high-quality connection sockets from aircraft technology
Scope of delivery with 1¼ inch UV/IR blocking and 850nm methane band filter

QHY 5-III-678 M/C guiding and planetary camera


The QHY 5-III-678 M/C is the latest development of version 2 of the QHY 5III series of planetary and guiding cameras. The QHY 5 III 678 M/C can be considered an improved version of its predecessor, the QHY 5-III-178M CMOS Camera (#1931024 , €375).

Like the Sony IMX178, the new IMX 678 sensor from Sony is a back illuminated (BSI) sensor in 1/1.8 inch format. However, compared to the IMX178, it has higher resolution (smaller pixels) and higher QE, as well as increased sensitivity in the near-infrared (NIR) spectral range. In addition, the QHY 5-III -678 M/C camera modules have some improved functions such as

Larger internal image memory DDR 512MB
Improved front and end design
Compatibility with CS and C-mount lenses
More stable and faster USB 3.2 Type-C interface
Universal ST-4 guiding port
Control LED for a status display.
The new QHY 5-III-678 M/C has an interesting new feature, a removable M 28.5 filter holder with a built-in 12.5mm (1/2") UV/IR blocking filter.
If you remove this retaining ring together with the built-in 1/2" filter, all commercially available 1 1/4" filters can be screwed on instead, which enables interesting applications for imaging from UV far into the NIR range.
At the same time, however, the 1/2" filter standard also offers other options for using other filter types that are common in industry.
We describe further, detailed information about these functions here.


QHY 678 spectral response curve in RGB mode

The following 4 graphics show the most important operating parameters of the QHY 5-III-678

GENERALLY
MANUFACTURER QHYCCD
PART NUMBER (#) 1931036
EAN CODE 4047825057013
NET WEIGHT (KG) 0.09
SENSOR INFORMATION
SENSOR CMOS sensor IMX678
SENSOR TYPE BSI CMOS – Back-side illuminated
OPTICAL FORMAT 1/1.25 inch
PIXEL SIZE 2.0µm x 2.0µm
RESOLUTION 3856 x 2180
CHARACTERISTICS
MONOCHROME OR COLOR? Monochrome
MAXIMUM FRAMERATE 41 frames per second (fps) with a data depth of 12 bit and full sensor area. Higher frame rates achievable with ROI
READOUT NOISE (ERMS) 3.3 e- to 0.57 e- (depends on GAIN settings)
REGION OF INTEREST (ROI) Full Resolution 43FPS @8BIT 22FPS @16BIT 1920Lines 85FPS @8BIT 43.5FPS @16BIT 640Lines 99FPS @8BIT 93FPS @16BIT
ADJUSTABLE EXPOSURE TIMES 11us-900sec
SHUTTER Electronic rolling shutter
INTERFACE USB3.2 Gen1 Type-C
DATA DEPTH 12-bit (output as 16-bit and as 8-bit)
PARTICULARITIES
INTERNAL VIDEO MEMORY 512MB DDR3 memory
ELECTRONICS
POWER SUPPLY Important note: With the planetary and guiding cameras of the QHY5II & III series, QHY has unfortunately mistakenly adopted a reference to a 12 volt power supply from the large, Peltier-cooled cameras. This is an error yet to be corrected,
HOUSING AND CONNECTIONS
BACK FOCUS 8 mm
USB PORT USB3.2 Gen1 Type-C
TELESCOPE CONNECTOR 1¼ inch compatible with CS or C mount by replacing the front end connector (IR cut filter and IR850nm filter)