ZWO ADC Mark II: Low-Lying Planets Without Color Fringes
When a planet is low above the horizon, the atmosphere refracts the light like a prism: a blue edge at the top, a red one at the bottom. That atmospheric dispersion visibly costs detail. The ADC Mark II corrects this with two precisely adjustable prisms that cause an opposing refraction, so that all colors coincide again.
The effect is immediately visible: sharper, true-to-color images of Jupiter, Saturn, and Mars, both visually and on camera. The corrector works as low as approximately 15 degrees above the horizon, significantly extending the viewing season for each planet. Two knobs control the adjustment; the multi-layer anti-reflective coating maintains light transmission above 98%.
Features
- Corrects atmospheric dispersion from approximately 15 degrees altitude
- Two adjustable prisms with fine adjustment via rotary knobs
- Over 98% light transmittance thanks to a multi-layer coating
- For visual and photographic use
Compatibility
T2 thread on both sides plus a 1.25 inch interface: fits between virtually any telescope and camera or eyepiece. Works best with focal ratios from approximately f/10, as is common with planetary setups.
Specifications
| Type | atmospheric dispersion corrector (ADC) |
| Optics | two adjustable prisms |
| Light transmission | more than 98% |
| Connections | T2 both sides, 1.25 inch interface |
| Use | visual and photographic |
For every planet photographer with a camera ZWO Is this the accessory with the highest profit per euro?.









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