Sharpstar ASKAR 103APO Astronomical telescope astrophotography Telescope Photography
Aliexpress UK
This is a standard reducer with field flattening capabilities as well. The 50EDPH is compact and lightweight, with a gross weight of 1.0kg (including the dovetail plate) and a total length of 196mm.
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The new 61EDPH Ⅲ still has high-quality optical standards like before and adopts a triplet air-spaced APO design. Compared to the 61EDPHⅡ, it upgraded to two pieces of low dispersion ED glass for more excellent imaging performance.
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It has an aperture of 100mm and the focal ratio is f/5.5. Z4 is a sextuplet astrograph with three pieces of lens at the front and three pieces at the back, and two of them are ED glasses. You can just make the target stay at the focus, and the optical system is perfect for imaging.
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【High Magnification】High definition technology, easy to search the target.
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Change of Mind. All profits from this sale will go directly to Wakefield Hospice.
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The flattener: One end of the thread is M68 × 1, connected to the focuser; the other end of the thread is M48 × 0.75 and has a built-in 2" filter thread. The back focus is 55mm. Triplet air-spaced structure.
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Reduction factor. 55mm (Distance between the end face of the baffle ring and the focal plane). Overall Length. Focal ratio. Back focus. φ50.8mm (2").
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The back focus is 55mm. full-surface multi-layer coating. 55mm(including the M48 thread). Back focus. quadruplet air-spaced structure.
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