ZWO ASI678MM

ZWO ASI678MM: monochrome sharpness for the demanding planetary photographer

The ASI678MM is the monochrome version of ZWO’s high-resolution planetary sensor. The Sony IMX678 delivers 3840 x 2160 pixels (8.3 MP) of 2.0 micrometers, without a Bayer matrix: each pixel captures the full signal. Combined with filters, you can extract the absolute maximum in sharpness and contrast from the moon, sun, and planets.

Compared to the older ASI178MM, the read noise is lower, the infrared response is better, and the amplifier glow has completely vanished. The High Gain Mode from gain 182 suppresses the noise even further at the settings where planetary photographers live.

From the monoworkflow

With a filter wheel, you switch between red, green, blue, and infrared, stacking per channel at full resolution. An IR-pass filter delivers a smooth luminance during moderate seeing; RGB supplies the color. The result surpasses what a color sensor can capture.

The dual connection (T2 and 1.25 inch) fits filter wheels, Barlows, and focusers without additional adapters.

Speed where it matters

At 47.5 frames per second at full resolution, and significantly more with cropped image areas (ROI), you will collect more than enough frames within Jupiter's rotation window.

This is also an excellent sensor for solar photography in hydrogen-alpha or white light (always with a safe filter system).

Featured accessories

• ZWO EFW Mini 5x1.25 inch filter wheel: automatic channel switching
• ZWO LRGB filter set 1.25 inch: the color basis for the mono workflow
• ZWO IR Pass Filter 1.25 inch: Quiet Luminance Through Moderate Seeing
• ZWO ADC Mark II: Dispersion correction for low-altitude planets

For whom yes, for whom no

Hello advanced planetary astrophotographers pursuing the highest possible detail with a filter wheel and monochrome camera.

Not for those seeking simplicity; with the ASI678MC you get color in a capture, without a filter wheel.

Specifications

The ASI678MM, together with an EFW filter wheel and the filter sets from ZWO the premier class of planetary photography.