BRESSER Laser Collimator 31.7mm (1,25") (Refurbished)

BRESSER Messier 8x50 Viewing finder scope with mount and integrated illumination. Finder slot included.FEATUREShigh-quality workmanshipintegrated illuminationeyepiece with reticleSCOPE OF DELIVERYviewfindermountviewfinder shoeprotective caps

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.NEW – now including a high-quality aperture Solar-filter for safe observation of sunspots, eclipses and planet transits. Great telescope for night and solar observation.The BRESSER Messier NT-203 telescope with a parabolic main mirror provides you images that a few years ago were impossible in this price class. Modern production technology lets you track the shadows of Jupiter's moons on the planet; the amount of structure and details on the surface of the planet is breathtaking. But the BRESSER Messier NT-203 is not only great for planetary observation: Detect details in faint distant galaxies and let the glow of nebulae take you to a journey into the depth of the milky way. The BRESSER Messier NT-203 provides you with images from the remains of giant exploded stars and gives you a view into the nursery of new stars. Let this big scope take you away to the beauty of the universe! Please note: Reflector telescopes with optical design Newton are very good for astronomical observing at the starry night sky. But these telescopes are not well usable for observing landscape and nature during daylight. Therefore we suggest BRESSER refractor (lens) telescopes for landscape and nature observing.CHARACTERISTICSOptical design: reflector telescopeMirror diameter: 203 mm / focal length: 1000 mm / F/5Maximum recommended magnification: 406x Telescope for night and solar observingVery high quality Hexafoc focuser with 2,5" free inner diameterDiffraction limited optics with parabolic main mirror8x50 straight through viewfinder with reticleOptimized finder socket for comfortable use Cradle rings with handle and integrated piggyback camera holder (1/4 thread)Smartphone adapter for celestial navigation includedDovetail plate with stainless steel rail 50,8 mm (2) to 31,7 mm (1,25) adapter with integrated T2 thread (T2-adapter ring for your camera is needed) SCOPE OF DELIVERYOptical tube 26 mm Super Plössl eyepiece 31,7 mm (1.25") Integrated 31,7 mm and T2 adapter Prism rail with stainless steel clamping surface Adapter for 50.8 mm (2") eyepieces 8x50 optical viewfinder Rotatable star map Aperture solar filter Tube clamp with handle and camera holder Smartphone adapter for celestial navigation Software Stellarium (via download)

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.Universally usable variable polarizing filter with a  1.25" filter thread.This variable polarizing filter allows for a continuous adjustment of the image brightness. This is very helpful to level strong differences in contrast of different observation objects individually. Particularly for lunar and planetary observations but also for solar observations this filter prevents an outshining of details.Solar observations ONLY together with an adequate solar filter !!! Particularly when a Herschel wedge is used and with large objective lens apertures the use of the variable polarizing filter can reduce the brightness of the observation object to a confortable level. The large adjustment range of 40% to 1% light transmission and the neutral grey filter effect create a comfortable and unadulterated image.The handling is very simple. The desired filtering level is set by turning the two sides of the housing against each other.A 1.25" filter thread on both sides (female/male) allow for the simultaneous use of additional colour filters.FEATURESvariable polarizing filterindividually adjustable image brightnessmade from high-quality optical glassblack anodized aluminium housing1.25" filter thread on both sidesSCOPE OF DELIVERYpolarizing filterprotective box

A new focal length joins the Explore Scientific line of inert gas-purged Waterproof Eyepieces with the 3mm 52° LER Series Eyepiece. A logical companion for the grab-and-go ED APO 80mm f/6 Air-Spaced Triplet, this eyepiece produces 160X which will perform very well with good seeing conditions on planetary objects, and to split double stars. On the ED APO 152 at f/8, 405X is achieved without the use of a Focal Extender or Barlow for those nights of near perfect seeing, with a very comfortable 15mm of eye relief. Comfort, Quality, Value. The Explore Scientific 52° LER Series Most short focal length eyepieces are excellent flat-field multi-element oculars that can transform your visual astronomy experience. With an apparent field of view of 52 degrees, these eyepieces offer incredible value in a very nice eyepiece. Expect exceptional quality and value versus a comparably priced Plossl.  These eyepieces are the choice for observers wearing glasses - with excellent performance and durability. The rubber inlet and the foldable eyecups make handling and using in the field easy. The patented EMD-coating produces high contrast images and prevents reflexes and ghosting. The argon purging effectively prevents internal fogging, and you don´t have to deal with dirt, fungus or cleansing fluids getting between the lenses. The eyepieces are sealed - this makes sure you will be able to enjoy these eyepieces for many years to come.SPECIFICATIONSLarge eye distance, large field and great image sharpnessExcellent viewing position for people with glassesExcellent field sharpness even with fast optics52° apparent field of viewArgon-purging prevents internal fogging, the sealing facilitates cleaningPatented EMD-coating to maximize contrastBlackened lens edges to avoid reflexesAll eyepieces of this series are parfocalStainless steel barrel with conical security cutoffDust covers and protective bag includedSCOPE OF DELIVERY52° EyepieceDust coversProtective bag

Please note that this astronomy book for beginners is only available in German.

NOTE: This item is a used or returned product. This means: The item may show slight signs of use and the packaging may differ from the original packaging. Please note that refurbished items generally come with a 12-month warranty.THE PMC-EIGHT GOTO SYSTEM JUST AWARDED A SKY AND TELESCOPE HOT PRODUCT FOR 2018. The Explore Scientific EXOS2-GT with PMC-8 Electronics is quite unique and special. Most of the serious amateur mounts on the market today offer single processors. The PMC-8 electronics are extremely robust. They include a 2-Channel Multi-Processor Micro-controller with 8 CPUs that run independently and are completely deterministic in their behavior, thus the name PMC-8. Within this multi-processor system is a 64 Kbyte EEPROM Non-Volatile Memory bank used to store parameters; a Wireless Ethernet 10/100 with full IP function which permits operation from anywhere using a browser, ASCOM, or APP over the web or serial port; and Non-Volatile Memory used to store user selected parameters. The electronics also includes an Auto-Guide port (ST4 contact input) and features the only wireless ASCOM driver on the market. The belt driven system uses 2 timing pulleys (1-45 groove and 1-10 groove) with fiberglass re-enforced neoprene belt connected to a Nema11 bi-polar stepper .67 amps 12ncm motor then connected to the worm. Precise ball bearings in both axes ensures minimal backlash at all nine possible tracking speeds. The included battery pack (12 V) takes eight size "D" batteries. The head rests on a very tough and rigid stainless steel tripod with adjustable 2" legs from 26.8" to 42.5" and can support up to 28 lbs. of equipment. This system is all controlled from a tablet, notebook or desktop pc with 7" display and WIN8.1, WIN10+11, iOS or Android 4.4 with a beautiful full graphical user interface using our very own ExploreStars OpenGoto® Software. The ExploreStars OpenGoto® Software has the same basic functions as most all other mounts on the market today. ExploreStars is a free App downloadable from the Microsoft App store and GooglePlay. The basic download includes a standard 2 star or 3 star alignment procedure, over 70,000 star database, the Messier Catalog and Solar System objects. The software interface features a Classic four-button pattern for guiding, centering, moving and slewing on the touch screen of your tablet or phone. Pull-down menus open to offer the intuitive 2 star and 3 star alignment procedure, selection of the various catalogs, guided tours, the sync button, the park position, search feature and the coordinate input screen to enter RA and DEC coordinate information. Numerical key pad allows for selectable and user enterable GOTO speeds for slewing, centering and guiding rates. You can also set sidereal, king, lunar, solar, and user defined tracking rates. What makes this software different is that YOU can write your own code and import it into this software. Create a Messier challenge. Create a selectable list of objects you want to photograph and program that information into the software. With the ability to write your own code, you can create whatever your heart desires. Share it with the community of astronomers that are using this software. In addition, this mount can be controlled by any ASCOM compliant software using the built-in wireless ASCOM driver. GPS-compatible and auto time / date settings are dependent on optional receiver on computer, tablet or phone.Here are most of the ASCOM software packages available for use with the Explore Scientific / Losmandy G-11 with PMC-8 mount: ACP; APT; AST / ATC & Ricerca (Omega Lab); AstroArt; AstroMB; Cartes du Ciel / Sky Chart; CCD AutoPilot; DeepSky; Deepsky Planner; DFM Engineering; Earth Centered Universe Pro; EasySky; Eye and Telescope; Project Pluto; Hallo Northern Sky; Maxim DL; MaxPoint; PinPoint Astrometric; Prism; Sequence Generator Pro; Sidereal Technology; The Sky; SkyMap Software; SkyTools 3; Star Atlas PRO; Sky Observer; StarryNight; Stellarium; Virtual Moon Atlas; and WorldWide Telescope.VIDEO REVIEW:https://youtu.be/tmNPajsd9H4 IMPORTANT NOTE: To start using ExploreStars app, download the free app and download the celestial data set that contains the astronomical catalogs, reference images, and reference text. Simply by unzipping the ExploreStars folder containing the expanded celestial data set into your Pictures directory, you will expand the native database from a thousand objects to over seventy thousand objects.SOFTWARE DOWNLOAD: https://explorescientificusa.com/pages/software-and-downloads-for-pmc-eight-systemFEATURESUnique PMC-8 Open Goto SystemBeautiful full graphical user interface using our very own ExploreStars OpenGotoWifi controlled by Tablet, Notebook or Desktop PC with 7" or larger display, and Wifi function (not included)Needed system software of optional computer or tablet: WIN8.1, WIN10/11, iOS or Android 4.4 or higherClassic four-button pattern and joystick for guiding, centering, moving and slewing on the touch screenIntuitive 2 star and 3 star alignment procedureMultiprocessor Micro Controller with 8 CPU´sMicro-Stepper Motors NEMA-11Highly accurate and silent Belt-Drive System ST-4 compatible autoguider portASCOM Driver available: YES, supports also Pulse-GuidingYOU can write your own code and import it into this softwareGPS-compatible and auto time / date settings are dependent on optional receiver on computer, tablet or phoneSCOPE OF DELIVERYExplore Scientific EXOS2-GT with Open GOTO PMC-8Stainless steel tripod with 2" legs and bubble levelCounter weight 2 x 4,5 kg Polefinder with illumination unitPower supply 12 volts / 2,0 ampereExploreStars Software via downloadIMPORTANT NOTE: This package doesn´t include any WINDOWS/iOS/Android Computer or Tablet.FAQ / KNOWLEDGE-BASE:  https://explorescientificusa.com/pages/explore-scientific-knowledge-base-and-faqsPMC-Eight GROUPS:  https://espmc-eight.groups.io/g/MAIN