Products description
ZWO ASI678MM mono USB3.0 astro camera - sensor D= 8.86 mm, 2.0 µm pixel size
The camera offers a very high resolution and can be used for lunar and planetary photography, EAA and also for deep-sky astrophotography.
Sensor: 1/1.8" CMOS IMX678 with 8.29 megapixel resolution
Sensor size: 7.68 mm x 4.32 mm - Diagonal: 8.86 mm
Extremely high resolution: 2.0 µm pixels
SONY STARVIS 2 technology - back illuminated pixel technology
With approx. 83% QE, a high sensitivity for short exposure times
USB 3.0 for quick download of images
Very low readout noise (from 0.6 e-)
Well suited for EAA due to the high frame rate of 47.5 fps
12 bit ADC
No more noticeable amplifier glow
Passive cooling with heat dissipation to prevent the sensor from heating up during long exposure
Good for deep sky photography
Large field lens (screwable) included in delivery
AR protective filter installed with full transmission even in the infrared
Includes ST4 level autoguiding interface
This camera is equipped with a modern 1/1.8" sensor with 3840*2160 pixels. In addition to the modern Starvis 2 technology (back illumination), the IMX678 offers an extremely smooth image without amplifier glow (amp glow), which is convincing but above all due to the extremely high resolution (2.0 µm pixels) and the high frame rate. We recommend the camera for, among other things:
Detailed planetary photography
Details of the lunar surface
Sun details (with appropriate filter)
Photography of (small) brighter nebulae and star clusters without power-consuming cooling - exposure times of up to 2000 seconds are possible
Infrared recordings to reduce the effects of seeing, resulting in a sharper luminance channel
Autoguiding camera (autoguiding connection is available)
EAA (electronically assisted astronomy) on planets, moon and sun
Lunar and planetary photography
Thanks to the fine 2.0 µm pixels, you can achieve a very high resolution from f/7, which makes the use of Barlow and converter systems unnecessary.
EAA (electronically assisted astronomy)
The extremely high resolution, combined with a high frame rate of 47.5 fps at full resolution (RAW8 format), enables real-time observation of planets as well as details on the moon and sun. Just watch together in a group - without waiting for everyone's turn!
Use as an autoguider:
The ASI678MM is lightweight at only 126 grams. It hardly puts any strain on the focuser. The camera of course offers the standard ST-4 autoguiding interface. A 2 meter long autoguiding cable is also included.
Anti-reflective clear glass filter protects the sensor from dust
The clear glass filter prevents dust from entering the sensor. It also allows UV and infrared to pass through, so you can also do infrared photography with the camera. With the right selection of contrast filters, fog filters, IR pass filters or UV/IR cut filters, you have full control over what light hits the sensor.
Air cooling - reduces sensor temperature
The sensor heats up while recording. The PCS dissipates the heat from the sensor via a thermal pad. The sensor temperature is reduced by up to 15 degrees Celsius compared to cameras without PCS.
High sensitivity for short exposure times
An advantage of the back-illuminated CMOS sensor is the lower readout noise and improved sensitivity. Sony particularly uses STARVIS 2 technology for the IMX678 sensor, which ensures excellent visibility in low light conditions. You can achieve a very high luminous efficiency in astrophotography and achieve high image quality not only in visible light, but also in the near infrared range (to reduce seeing). In addition, the low readout noise ensures a larger dynamic range.
The ASI678MM is not only ideal for planetary and detailed photography of the sun and moon, but can also be used as a live streaming camera or as an all-sky camera for observing or monitoring weather conditions.
The low noise and anti-ampglow circuitry don't make these! Peltier-cooled camera interesting for recording deep sky objects such as faint nebulae, star clusters and galaxies.
The HCG mode:
The camera has a built-in HCG mode that can effectively reduce readout noise at high gain and maintain the same wide dynamic range you would expect at low gain. When the gain is 182, HCG mode turns on automatically. This results in the readout noise being below 1.1 e-, while the dynamic range can still reach approximately 12 stops.
Downloads, drivers:
ZWO makes software and drivers available online for free download.
Software and drivers for all ZWO cameras
Frequently asked questions about ZWO cameras:
The FAQ area is constantly updated by ZWO and you can find answers to many questions here.
FAQ about ZWO cameras
ZWO Users Forum
Instructions for ZWO products:
The page is constantly updated by ZWO; instructions for ZWO products can be found here.
Sensor: Sony 1/1.8" CMOS IMX678AAQR1-C SW sensor
Resolution: 3840*2160 pixels, 8.29 megapixels
Pixel size: 2.0 µm
Sensor size: 7.68mm x 4.32mm
Diagonal: 8.86 mm (1/1.8")
Recording speed: up to 47.5 FPS at 10 bit
Exposure time: from 32 µs - 2000 s
ROI: Supported
ST4 Autoguider Port: Yes
Distance from T2 thread to sensor: 12.5 mm
Shutter type: rolling shutter
Protective window: AR coated, full IR transmission
Connection: USB3.0/USB2.0
QE: ~83%
Full well: 11.27 ke-
Antiampglow circuit: Yes
Readout noise: 2.7 e- to 0.6 e-
Bit resolution: 12 bit ADC
Telescopic connection: M42x0.75 / 2" / 1.25" (via adapter)
Tripod thread: 1/4" at the back
Dimensions: D 62 mm x 37.1 mm (without lens)
Working temperature: -5°C to +50°C
System requirements: USB 3.0 should be supported by the operating system - from Windows 8, Mac OS X 10.8, Linux Kernel 2.6.31 (from Ubuntu 16.04)
Weight: 126g
ASI camera
Adapter T2 (M42x0.75) to 1.25"
1.25" cover
Adapter T2 to CS mount (mounted)
Large field lens (mounted)
USB 3.0 cable
ST4 cable
Quick guide (in English)