Omegon ADC Atmospheric Dispersion Corrector
ADC: With this, your planetary photos will also be sharp on the horizon
What observer doesn't know this: Saturn appears just above the horizon. Anyone looking at it through a telescope now sees only a blurry disk. A stain in the sky. Planetary photos aren't worth it now, because the light is refracted by the thick, dense layers of the atmosphere. Color fringes are produced! We would have to wait hours for the planet to rise higher. However, the position of the planetary orbit does not always allow it.
The Solution: The Omegon ADC! This small component ensures sharp planetary photos with many details. Even far below the horizon.
The advantages at a glance:
Corrects atmospheric scattering: fewer halos, sharper, more detailed planetary photos.
2.5° adjustment range: two prisms that can be moved against each other
Ultra-flat: also suitable for visual observation and binoculars
Circular scale for setting the dispersion correction
1.25" adapter with T-ring and compression ring: for cameras and eyepieces
Telescopic side 1.25" sleeve with filter thread
How the scattering of land becomes a beautiful object
When we see a bright star on the horizon, we often see it twinkling and twinkling in the brightest colors. Nice for the romantic, but bad for the astronomer. Because starlight is strongly refracted by the thick layers of the Earth's atmosphere. This phenomenon is called atmospheric scattering and it creates fringes of color around objects. The details are not recognizable. The lower an object is on the horizon, the stronger the refraction. Blue color refracts much more than red. With the Omegon ADC, you can transform a planet surrounded by bands of color into a wonderful object. The highlight: two prisms that can be rotated against each other. These simulate a kind of eigencolor error which however acts exactly opposite to the land scatter and thus compensates for it.
Three-piece kit: ADC with two adapters and T-thread
The dispersion corrector is modular and consists of three parts:
1.25" barrel with T-2 thread
Intermediate piece: ADC with prisms
T-2 to 1.25" eyepiece adapter with additional T-2 thread and snap ring clamp
Mounting couldn't be easier: the ADC fits any telescope with a 1.25" or T-2 connection. It can also be used without an adapter. Advantage: you can of course also use the two adapters for other purposes that you would otherwise use must be purchased separately.
BK-7 steerable prisms with high light transmission
The two wedge-shaped BK7 prisms are equipped with a broadband coating and provide high light transmission. In visible light, the ADC achieves up to 99% transmission. So you still get the usual bright pictures of the planets. You can move the prisms 2.5° with two small levers. That's more than some other models. In this way, you can continuously set a low or very high color deviation. The result: even better dispersion correction, especially at the horizon. Another advantage: a rotating ring scale gives you the opportunity to quickly find the optimal setting for the next observation.
When and what should I use the Omegon ADC for?
The ADC is a special corrector for planetary observers and photographers. Also, the planets Saturn and Jupiter will only reach low heights above the horizon in the next few years. Without an ADC corrector, you would have to put up with detailed, even "soft" planets for a long time. With the ADC you avoid this inconvenience. Professionals have also been using ADCs for years, even with larger declinations in the sky. Because color errors can also occur there to match
Are there other objects besides planets? Some amateurs use the ADC to observe binary stars. The ADC also facilitates the discovery of Sirius-B, the white dwarf in the Sirius system. Now the ADC has also arrived among the fans. Take the opportunity to get perfect photos of the planet.
Astrophotographers are excited
Our customers are totally enthusiastic about the Omegon ADC. Because finally, fantastically sharp planetary shots are possible, which one user even compares to Hubble in his garden. A few years ago, this image quality was reserved for professionals only.
"Great piece of hardware! Feels like the final images were taken by Hubble in my backyard. Almost no atmospheric diffraction."
Cesar Pinheiro, astrophotographer
Look at the images of the astrophotographer: we can understand why these images inspire.
Other features:
Front and rear with T-2 thread
30mm optically usable diameter
Slightly permeable to UV rays (300nm = 10%, 350nm = 48%, 400nm = 94%)
Infrared: 780-1000nm, 92% to 70% transmission
Completely in metal, anodized in black.
dust cover
scope of delivery:
Atmospheric Dispersion Corrector with two adapters
dust caps
User Manual (English)
Note that precise horizontal alignment of the ADC is necessary for proper operation.
comment:
The use of the ADC depends on the telescope used. For the ADC to work optimally, you should aim to achieve a longer focal ratio than f/10. This is automatically the case with SC telescopes, but with other optics it may make sense to use a Barlow lens.
We recommend the following screw down bar for the ADC: Omegon Travel Concealer for 1.25'' 1.6x Binocular Accessories or Omegon Travel Concealer for 1.25'' 2x Binocular Accessories.
(Bern Gahrken)
Especificaciones:
English GB
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