What is an atmospheric dispersion corrector: An ADC corrector is a small unit that corrects the refraction of light in the atmosphere. For example, a large object like Jupiter has a red and blue color fringe and also appears distorted. This effect is caused by the refraction of light in the Earths atmosphere which acts like a prism. This effect becomes more prominent, depending on how high the object is above the horizon. The deeper the object is, the stronger the effect comes into play. Since especially in northern countries the planets are only very low, the effect here is particularly strong, and the corrector is particularly worthwhile here.
How does the ZWO ADC corrector work? Our atmosphere refracts the light to varying degrees, depending on the wavelength. Red light is refracted differently than blue light. The closer the object is to the horizon, the stronger the effect. With the adjustment levers on the ADC, you adjust the two prisms in the corrector and thus counteract the effect of the Earth's atmosphere, neutralizing this color shift. this makes a huge difference to the clarity and sharpness of your images.
Important Tip for use:
For the maximum effect, the corrector must be correctly oriented to the horizon. This is usually the case when the superimposed handles of the compensator are parallel to the horizon line in the focuser.
It should be noted that in the case of equatorially mounted telescopes, the position to the horizon changes over time, which must of course be taken into account.
Connections on the corrector: T2 female/male thread
Also included: 1.25" receptacle for telescope and 1.25" adapter with ring clamping for eyepiece
Prisms: Two wedge-shaped prisms - rotatable to each other
Weight: approx. 200 grams
For more information how to use this ADC please download the ZWO ADC Manual here
Please Note: Items in stock and ready for dispatch immediately are usually delivered within 24-48hrs. Some items may be 'Special Order Items' and require additional lead time before being dispatched eg. 5 - 10 Working days - This will be highlighted on the product page before purchase.
All orders are shipped using our reputable courier partners to ensure your items arrive safely and promptly. While we do offer International Delivery, we are unable to ship large Telescopes and Mounts outside of Ireland.
REPUBLIC OF IRELAND
Est. Delivery Time after Dispatch: 24 - 48 hrs
Standard Express Shipping: Ireland Nationwide: from €9.95
Note: Larger telescopes which contain multiple boxes include an additional surcharge. Shipping is calculated automatically at the checkout.
- CLICK & COLLECT -
You can also avail of our FREE 'Click & Collect' service at the checkout, where you can order online and collect from our head office. Depending on the items and availability, these can be ready for collection within a few hours. "NOTE: Please wait until we let you know your order is ready before you arrive, to arrange a suitable time for collection."
Est. Delivery Time after Dispatch: 24 - 48 hrs
Standard Express Shipping: Norther Ireland: from €19.50+
Standard Express Shipping rate applies up to a max order weight of 30kg Nationwide. - Large heavy items from 30kg+ include an additional surcharge, depending on the overall weight.
Unfortunately due to Brexit we are currently unable to ship to Mainland UK at this time.
Est. Delivery Time after Dispatch: 24 - 72 hrs
Standard Express Shipping: European Union: from €18.95+
Shipping available for items upto a max order total weight or volumetric weight of 27kg.
If your country is not listed below please contact us for more information.
Standard EU Delivery Regions: Germany, France, Belgium, Poland, Luxumbourg, Netherlands, Sweden, Denmark, Portugal, Spain, Austria, Italy, Poland, Czech Republic, Croatia, Malta, Greece
US & CANADA
Est. Delivery Time after Dispatch: 48 - 72 hrs
Standard Express Shipping: US & Canada: from €28.50+
Shipping service available for items upto a max order total weight or volumetric weight of 20kg.
* Customs / Import duties may apply in these regions. For more information please contact your local tax/customs office.
IMPORTANT: Its essential that when placing an order, you include a valid 'Contact Telephone Number' for the delivery address or for the person receiving the item. This is necessary to avoid potential delays or problems with your delivery.
Please Note: Delivery times listed above are estimated. These are calculated from when your order is Completed & Dispatched (not from when the order is placed) and times may also vary for some remote post codes. Delivery service takes place Mon-Fri (excl. Bank/Public Holidays).
Shipping Disclaimer: All of our parcels are sent via a 3rd party registered courier service to ensure safe and prompt delivery. While we endeavor to ensure that all parcels are delivered within the specified time frame, 'Horizon Astronomy' can not be held responsible for delays due to adverse weather conditions or other courier/technical related issues outside of our control.