Apochromatical Refractors, 3-Lenses, opt. Tube:

Starwave 80 ED Triplet APO Travel Refraktor Scope of delivery: Optical tube 2x tube clamps Mounting plate Case

Item condition: new and original packed

TS Photoline 130mm f/7 Triplet Apo - FPL-53 - 2.5" RPA Focuser We stands on uncompromising optical and mechanical quality with the PHOTOLINE APO series. The 130 mm f/7 triplet refractor is equipped with one of the best lenses in its class. The apo element is the proven FPL53 from Ohara (Japan). The lens, free from chromatic aberration, is mounted in a temperature-compensated cell that also compensates for sub-zero temperatures. A solid metal tube and the new PHOTOLINE RAP 2.5" deluxe focuser with rack and pinion drive make this apochromat a recommendation for the dedicated astrophotographer and the observer. Advantages and features of the PHOTOLINE 130-mm-F7-Apo: Triplet lens with air gap - apo element made of FPL53 by Ohara Temperature compensated, fully adjustable cell 2.5" RAP Photoline dual-speed rack and pinion focuser - carries accessories up to 5 kg Direct M68 and M63 thread connection for correctors and reducers Sturdy aluminium tube with internal baffles An extension piece with M95x1 threaded connection can be unscrewed, thus increasing the working distance from 123 mm to 213 mm. The new PHOTOLINE RPA 2.5" deluxe focuser - in elegant WHITE: The 2.5" RAP focuser is a good alternative to the well-known Starlight FeatherTouch FTF25 - with a quality that is very close to this focuser. The focuser holds camera-side accessories up to about 5 kg without causing tilting. The illumination of the focuser is sufficient for full-frame size sensors. Adjustment via rack and pinion - no friction - no yielding as with the Crayford focuser Self-centering eyepiece and accessory adapter for 2" and 1.25" The lens of the PHOTOLINE 130 mm F7 apo: For this telescope, we deliberately chose the high-quality FPL53 as the material for the Apo element in order to offer the best possible optical quality. The multi-coated lens is stored in a temperature-compensated cell. The lens is not cemented, the lenses are separated by air gaps. The lens edges are blackened. Recommended correctors for astrophotography: TS 2.5" full frame size corrector and image field flattening - TSFLAT2.5 The focal length is not changed. Recommended distance from the M69 connection thread of the corrector to the chip: 88 mm. TS 0,8x PHOTOLINE Reducer and corrector - TSRedM63-130 The corrector is calculated for the 130mm f/7 apo. The focal length is reduced to 728 mm, the focal ratio improves to f/5.6. Recommended distance from the M48 connection thread of the corrector to the chip: 55 mm. Characteristics: High quality air spaced triplet-ED primary lens Temperature compensated lens cell Aperture 130mm, focal lenght 910mm, f/7.0 Multi-coatings on any glass-air surface 2.5" R&P focuser with micro reduction Delivery: Optical tube 130/910mm Dew cap, retractable 2.5" R&P focuser with micro reduction Reductions to 2", 1¼" CNC Tube rings GP level dovetail

Item condition: new, but not original packed

APM - LZOS Telescope Apo Refractor 100/800 2.5"ZTA, Serial nr. 245, 98.1 % Strehl, 1/8.5 wavefront p.t.v.

Item condition: new and original packed

Product description APM 152mm f/6 SD Apo Wide Field Refractor This 2-element SD is a really perfect telescope for the ultimate large field observation also high magnification observation of planets and double stars. The stars are absolutely point-like, color-neutral and contrast-rich, as only a well-corrected apochromatic refractor can produce. At the same time the refractor is with about 80 cm transport length and 9 kg weight ( with rail, tube clamps, carrying handle 11 kg ) still well transportable. A stable azimuthal mount, like our APM-AzMaxLoad or a good parallactic mount like the HEQ5 or the EQ6 are recommended as base. The 2-element SD objective with German Gerd Düring design offers by the very good chromatic correction an image up to about 200x without disturbing color errors in focus, even Jupiter and moon remain color neutral white in focus.For this size and this focal ratio here was created almost a marvel of optics. Another special feature of this telescope designed by APM Telescopes is the very large backfocus of 220 mm behind the 2" adapter with the focuser retracted. This allows the use of any binocular approach with a 2" zenith mirror, without the necessary use of a glass path corrector, so that also binocular really the maximum field of view ( 1.79 degrees when using 1.25" eyepieces and 3.06 degrees field of view when using 2" eyepieces ) is made possible for them. Translated with www.DeepL.com/Translator (free version) The 2-element lens in a temperature compensated mount: The optics and mount are manufactured to German design. The mount is also a self-centering compensation mount based on our proven 140 mm SD apo. Astrophotography with the APM 152 mm f/6 SD refractor: Although the telescope is optimized for wide-field observing, photography of comets, extended nebulae, globular clusters and galaxies will also succeed. The fast focal ratio of f/6 allows short exposure times. However, an image field corrector is absolutely necessary to obtain sharp stars to the edge. We recommend the Riccardi RiFlat 1.0x- field flattening corrector , which screws directly into the M82x1 female thread of the focuser and the Riccardi Reducer-Flattener corrector 0.75 x ( both the M82 version and the M63 versions are recommended ) which turn the original focal ratio of F/6 now into a true rich field astrograph of F/4.5, and that for fully illuminated full format. Scope of delivery: Optical tube Tube clamps Carrying handle Losmandy Mounting Plate 3.7" APM extension with M82 and M63 female thread

Item condition: new, but not original packed

APM - LZOS Telescope Apo Refractor 228/2050 CNC LW II, Serial Nr. 023 , Testdata at 532 nm : Strehl 95.9 %, Wavefront RMS 0,032 , Wavefront P.t.v. 0,165

Item condition: new and original packed