EXPLORE SCIENTIFIC 100° Ar Eyepiece 20mm (2") (Refurbished)

SXD2WL SD115SII Complete Telescope Set with GoTo Mount, Tripod and EyepiecesThis high-quality apochromatic refractor telescope-set impresses with its 115-mm-SD optics. The telescope is made in Japan and scores with its excellent workmanship, sharpness, and contrast performance. The advantage of this SD refractor lies in its light weight and very color-true and high-contrast imaging. You will be amazed when you use it to observe the moon surface with its craters or Saturn with its ring system. On Jupiter, on a good night, you can also see the two bright cloud bands and many smaller details as well as the great red spot on the planet. On moonless nights, you can observe the Andromeda Nebula, Orion Nebula, Eagle Nebula, Lagoon Nebula and many other interesting objects. Even weaker celestial objects become visible with this large aperture of 115 mm under a good sky.This telescope set "Made in Japan" leaves nothing to be desired. The FPL53 glass used in the telescope reproduces an extremely clear and sharp image due to exceptionally high elimination of residual color errors. The SD glass is designed to bring all rays – violet, red, blue, yellow, and green – very precisely to the same level. The special lens material thus reduces chromatic aberration across all colors. In the new Vixen SD115SII, no spacer plates are used anymore, which leads to a significantly better image quality especially with bright stars. Consequently, no spikes are seen on the stars in photographic images, which would otherwise be caused by the spacer plates.In combination with the optional SD Reducer HD Kit or SD Flattener HD (not included), this refractor telescope enables illumination with a 44-mm image circle for full-frame SLR cameras. The older ED81SII, ED103S, ED115S refractors were originally developed for visual observers and photographers with APS-C cameras. However, the new SD series is also optimized for use with full-frame cameras due to the use of new internal diaphragms. The large 60-mm eyepiece holder also allows the attachment of heavy cameras without tilting. Furthermore, the supplied flip mirror allows comfortable observing even in unfavorable viewing conditions and also provides a T2 thread for attaching a DSLR camera. So you can observe at an 90° angle or directly. The carry handle attached to the tube clamps provides safe handling during transport of the telescope. The sturdy metal tripod allows vibration-free mounting of the telescope and mount even in windy conditions. The SXD2WL mount is simply operated via a Wifi module with a smartphone or tablet . For user-friendly control of the mount, the free app STAR BOOK Wireless is available. This allows you to use practical celestial navigation functions like the automatic GoTo swiveling to specific celestial objects simply via your smartphone or tablet. Since the power consumption of the traditional LCD screen (STAR BOOK TEN) is eliminated, the power consumption of the mount is reduced by up to 20%. This enables astronomical observations and astrophotography over longer periods. When you tap the desired celestial object from a list, it is automatically swiveled into the telescope's field of view and tracking begins. An existing STAR BOOK TEN control can also be used on this mount without any problems. Equipped with the same precision stepper motors as the top model, the AXD mount, the SXD2WL sets a new standard for performance and precision in the Vixen mount family. The axis cross of the mount is with a photographic carrying capacity of 15 kg just 9.2 kg light and thus excellent for mobile observations . Moreover, the motors located in the lower part of the mount also act as counterweights. This reduces the need for additional counterweights. The SXD2 Mount in Detail Precision stepper motors and Micro-Step-Motion-Control system The heart of the SXD2 are the precision stepper motors, which offer better performance and response than previous models. The Micro-Step-Motion-Control system boasts powerful yet very quiet drive properties, which are present both in fine movements and in fast swivels. Built-in bearings The bearings of the RA and DEC axes and the worm shafts have been significantly improved to reduce the load on the motors. As a result, the motors move much quieter than in previous models. High-precision worm gears High-precision processing technologies eliminate errors in the worm gears. The edges of both worms and worm wheels are particularly smooth, enabling very precise tracking. Declination axis as counterweight The massive motor units are built into the lower part of the declination axis, so the center of gravity of the SXD2 is below the intersection of the RA and DEC axes. This means you need fewer additional counterweights. Latitude adjustment The latitude can be adjusted between 0 and 70 degrees (divided into 3 zones and adjustable +/- 15 degrees per zone, for high, medium, and low latitudes); latitude scale in 2-degree steps; fine adjustment with a tangent screw head, approx. 0.8 degrees per rotation. Built-in PFL-II polar finder with illumination The built-in 5x20-mm polar finder with a 10° field of view features a 3-star alignment system. This eliminates the tedious setting of date and time. The illuminated reticle with variable brightness and automatic shutoff is adjustable in 8 levels and is red illuminated. The adjustment accuracy is 3 arc minutes.The Wireless Module in Detail The Vixen WiFi Adapter for EQ mounts enables you to control your Vixen mount via a smartphone or tablet. This allows you to navigate the skies wirelessly using the STAR BOOK Wireless app (free), instantly transforming your mobile device into a controller for the equatorial mount. The response delay of the mount, a major drawback of wireless connections, has been reduced to a level comparable with wired solutions. Reduced power consumption compared to conventional controls with LCD monitors The power consumption of the mount is reduced by up to 20%, thus allowing for longer observation periods than with conventional wired controls such as the STAR BOOK TEN. Operation similar to the STAR BOOK TEN controller The STAR BOOK Wireless App is structured similarly to the STAR BOOK TEN controller you might already be familiar with. Depending on the star chart settings, it includes up to 259,000 celestial objects. Simply tap on a celestial object in the object list to start the GoTo. The mount then automatically moves to this target and positions it within the telescope’s field of view. All the popular features of the STAR BOOK TEN are retained. Convenient operation While looking through the telescope, you control the mount by swiping on the app’s star map. With no buttons required, you simply glide your finger over the star map, allowing for easy operation of the mount. Comprehensive astronomical data included This includes data on easily observable celestial bodies such as Messier objects, NGC objects, IC objects, as well as the sun, moon, planets, comets, and dwarf planets. High-precision alignment Aligning with one or two stars already provides a fairly accurate positioning of the mount. Aligning with three or more stars allows for high-precision alignment of the mount for high magnifications. The objects are then precisely centered in your telescope’s field of view. The alignment information is stored and can be retained even when the device is turned off. By leaving the telescope in its current state after observing, without moving it, you can start the next observation with the automatic setup using the same settings. Individual setting options Like the STAR BOOK TEN controller, the app offers various individual settings such as backlash compensation, red night mode, autoguider, as well as variable GoTo speed and LED brightness. You can also set the timing of the objective tube reversal (Meridian Flip) as desired. Even if the object moves south during tracking, you can prevent the telescope tube from reversing.Important Information Not usable on old SX mounts with the old blue Star Book Technical Information on the Wifi Module CPU with a 32-bit CISC processor at 120 MHz The unit connects to the mount with a D-SUB 9PIN connector, as with the STAR BOOK TEN. It features a 6-pin 6-wire modular plug for external autoguider operation. Supported operating systems include Android 6 or later, iOS 9.0 or later, WLAN standard: IEEE 802.11b/g/n FEATURESSD115SII TelescopeLens: D=115 mm, fully multi-coated2-lens SD apochromat without spacerNo spikes on starsFocal length: 890 mm (f7.7)Resolution and limit magnitude: 1.01 arc seconds; 12.1Light gathering capacity: approximately 270x that of the human eyeDimensions and weight: 125 mm dia x 930 mm; 4.4 kg without accessoriesFinder scope: 7x50, illuminatedAdapters and connections: 60 mm thread, 50.8-mm and 31.7-mm sleeve, T-ring threadConnection: 50.8-mm and 31.7-mm sleeve with flip mirrorPhotography: Primary focus and eyepiece projection SXD2WL Mount RA gear: 180 teeth DEC gear: 180 teeth Axle material and diameter: Carbon steel / Dec. 35 mm, RA 40 mm thickness Polar finder scope: 6x20 mm, PFL-II polar finder Altitude fine adjustment: 0° to 70°, (fine adjustment +/- 15°, height) Counterweight bar: 20 mm diameter Azimuth adjustment: worm gear fine adjustment Power supply: DC12 V; 0.4~1.7 A Maximum load: 15 kg, photographic, without counterweight Counterweights: 1x 1.9 kg and 1x 3.7 kg Mounting: 45 mm spigot Dimensions: 36 cm (H) x 12 cm (W) x 36 cm (L) Weight: 8.8 kg (19.4 lb), without counterweight 32-bit CISC processor 120 MHz Operating system: Android 6 or higher, iOS 9.0 or higher Connection: D-SUB 9PIN plug Autoguider input ST4 Power consumption SXD2WL+Wireless unit: DC12V / 0.3–2.0 A (load 10 kg), 0.4–2.2 A (load 15 kg) SCOPE OF DELIVERYSXD2WL MountWireless UnitCounterweights: 1.9 kg and 3.7 kgPolar finder scope, illuminatedMounting toolsCar lighter cableSD115SII Refractor TelescopeFlip mirror2 eyepieces (SLV 20, SLV 5)Tube clampsDovetail plate7x50 finder, illuminatedSXG Aluminium tripod