Secondhand & Stock

Astronomik 2" O-III filter 12nm

Item condition: new and original packed

Astronomik OIII-CCD-Filter, 12 nm, Anschluss 1,25"

Item condition: new, but not original packed

Astronomik CLS Filter 1,25"

Item condition: new and original packed

Astronomik H-Beta Filter 2'' The Astronomik H-Beta filter is made for the visual observing with 8" telescopes and larger. Only light of the very small H-Beta spectrum in which the hydrogen nebulas shines can pass. The contrast of this objects increases, so objects normally only visible on photos will be viewable for the naked eye. Which objects can be observed: This filter enables a very contrasty observing of hydrogen nebulas. Which telescopes can be used with this filter: We recommend the H-Beta filter for telescopes from 20 cm aperture onwards. Delivery contains: Filter Filterbox

Item condition: new and original packed

B+W Schneider Kreuznach Top-Polfilter 2"

Item condition: new and original packed

APM Greyfilter ND 3.0 1,25"

Item condition: new and original packed

Mars Observing Kit #80A to observe Martian polar caps and high clouds #25 to view detail in maria and polar ice caps #56 filter for viewing dust storms and polar caps 2x Barlow lens Hard Carrying Case

Item condition: new, but not original packed

Skywatcher 1,25" variable Polarizing filter

Item condition: new and original packed

Product description: Omegon premium Moon filter - to ensure that your lunar observing is fun Does the Moon appear far too bright when observing it through your telescope? The Omegon Moon filter reduces the brightness and increases contrast. It screws easy into your eyepiece, permitting relaxed observing and stopping the Moon from dazzling you. The advantages in a nutshell: Omegon neutral density filter - tones down moonlight for more comfortable observing neutral image - the Moon retains its natural appearance high contrast - discover thousands of craters and fine structures for your eyepiece - fits onto any 2" eyepiece with a filter thread The Moon is too bright - tone it down a bit The Moon can be so bright that you can easily read a newspaper by its light at night. But anyone looking through a telescope will note just how bright the Moon really is. It often irritates the retina and dazzles the eye in unpleasantly. No wonder - the full Moon is 25,000 times brighter than the brightest star in the night sky. So having a neutral density filter is definitely an 'ace up your sleeve' when observing the brighter lunar phases. Filter with 25% light transmission This filter is ideal for smaller and medium-sized telescopes up to a diameter of 150mm. The 25% light transmission reduces the brightness of the moonlight, allowing you to observe the Moon at any time - in comfort and without glare. Polished glass for a clear view You are purchasing a first class product with the Omegon Moon filter - a polished glass filter held in an anodised aluminium mount. The filter glass has been ground and stained throughout the entire glass volume. This avoidance of using a superficial coating means that it cannot wear out, even after many years of use. A Moon filter belongs in the eyepiece case of every amateur astronomer. But, above all, it is a must for comfortable lunar observing.

Item condition: new and original packed

Suitable for: Focusers with a dovetail ring with 79-80 mm diameter Base for focusers

Item condition: new, but not original packed

Crayford 3" focuser with 1:10 reduction, 360° rotation. With connection adapter with 108mm threaded connection.

Item condition: new, but not original packed

TS-Optics 1.25" and T2 Micro Helical Focuser - T2 connection

Item condition: new, but not original packed