Набор лунных фильтров Celestron, 1,25
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Описание
Luna – the most popular object for astronomical observations. This is a bright target that is easy to point with a telescope, and many interesting objects can be seen on the surface. Lunar filters allow you to reduce the excessive brightness of the Moon in a telescope and increase contrast, thereby making it easier to observe fine surface details. Astronomy enthusiasts refer to moon filters as "moon sunglasses" because they provide more comfortable viewing and reduce eye fatigue. This kit contains all the filters you'll ever need to view the moon. Depending on the phase of the moon and the magnification of the telescope, you can always choose the filter that will reduce the brightness of the moon to the optimum value. For observations at low magnification and for telescopes with large apertures, we recommend using the darkest filter. Lighter filters should be selected for high magnification and small telescopes. This set is useful for those who want to take their next step in studying the Moon with a telescope, as well as for experienced astronomers who use a variety of telescopes and eyepieces to observe the Moon. .The kit includes: Three ND filters (ND96-0.9 13%T, ND96-0.6 25%T and ND96-0.3 50%T). They evenly darken the entire visual spectrum in the range of 400-700 nm. Filter ND96-0.9 passes 13% of incoming light, ND96-0.6 – 25%, and ND96-0.3 – 50%. Filters reduce the brightness of the moon without changing its color. With three ND filters available at once, you can always choose the right level of lowering the brightness of the Moon, depending on its phase, the diameter of the telescope lens and its magnification. Filter Moon & Sky Glow – selectively reduces the transmission of light at certain wavelengths, which significantly improves the contrast when observing small objects on the lunar surface. At the same time, the moon acquires a slight light purple hue. For those who live in conditions of strong urban illumination, the Moon & Sky Glow will also help to slightly improve contrast when observing deep sky objects (because the filter blocks the wavelengths emitted by some light sources, such as street lamps with low pressure sodium lamps). Below is a graph of the filter transmission: Plastic case – the set comes in a durable plastic case with a foam cushion for storing and transporting all four filters.Moon Map – will help you get to know our space neighbor better. This handheld map of the Moon features 17 points of interest to observe, including the Sea of Tranquility, Tycho, Plato, Copernicus and more. All filters are housed in a durable anodized aluminum frame with filter names engraved on the side of the frame. The filters are compatible with 1.25' eyepieces from Celestron and other brands. Each filter has two threads – it gives a
Свойства товара
- Тип: Аксессуар для телескопа
- Конструктивные особенности: Многослойное покрытие линз, Чехол в комплекте
- Принадлежности в комплекте: Светофильтры
- Бренд: Celestron
- Цвет: Черный
- Тип аксессуара: Светофильтр
- Гарантийный срок : 1 год
- Страна-изготовитель: Китай