BRESSER Diagonal Mirror 2" with 93% reflection

Universally usable variable polarizing filter with a  2" 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 2.0" 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 housing2.0" filter thread on both sidesSCOPE OF DELIVERYpolarizing filterprotective box

Are you having trouble focusing your eyepiece or camera? Then use this 37.5 mm extension sleeve to increase the distance between the 2.5 inch HEXAFOC eyepiece extension and the eyepiece or camera. The extension sleeve has an M68x0.75 mm internal and external thread and can therefore be screwed directly onto the HEXAFOC draw tube. SPECIFICATIONSIncreases the distance to the eyepiece/cameraSuitable for 2.5 inch HEXAFOCOptical length: 37,5 mmInternal and external thread: M68x0,75 mmInside black matt coatedMaterial: aluminium, black anodizedSCOPE OF DELIVERYExtension sleeve 37,5 mm (1 piece)

For astrophotography it is essential to achieve the correct focus point with great precision. With the 1:8 Gear set precision focussing is easy. The gear set can be installed easily without difficulties and upgrades a 2,5" Hexafoc to a full 2,5" Hexafoc DeLuxe.Installation video:  https://www.youtube.com/watch?v=RCnsn2o-B94&t=144s

Solidly in the mid-magnification range for most amateur telescopes, the 15mm is a true workhorse for visual observers. If you love deep sky observing, eyepieces in this focal length range not only give healthy increases in magnification, but the contrast enhancement of giving a darker background sky can make all the difference of how galaxies and nebulae appear under suburban skies.Comfort, Quality, Value. The Explore Scientific 52° LER Series mid-range 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

With the BRESSER Messier AR102s/600 telescope and the EXOS-2 PMC-Eight GoTo mount, you are well-equipped to explore both the Sun and the night sky. Ambitious beginners and advanced users can use the optics with a 102 mm aperture and a focal length of 600 mm to discover the brightest objects beyond our solar system. Enjoy impressive views of fascinating star clusters. You can also safely observe the Sun with the help of the solar filter. The modern mount, equipped with GoTo control and the intuitive ExploreStars app, ensures precise tracking and easy navigation of the sky. The Telescope The BRESSER Messier AR102s is a high-quality telescope for night and solar observation. Ambitious beginners and advanced users will already find the brightest objects outside the solar system with this device. Discover structures in the Orion Nebula at an incredible distance of 1,500 light-years (14,200,000,000,000 km)! Exploring the light-dark boundary (terminator) on the Moon is a delight. And with the high-quality objective solar filter, you can safely observe sunspots, eclipses, and planetary transits. (Warning: Never aim the telescope at the Sun without a solar filter.) You will never want to part with the Messier AR-102S. The Mount The EXPLORE SCIENTIFIC EXOS-2 PMC-Eight GoTo mount is equipped with a modern and highly precise GoTo control system. It consists of a robust Wi-Fi controller unit that provides all necessary interfaces. The NEMA-11 stepper motors are directly connected to this unit via cable, and a ST-4-compatible autoguider interface is also available. Additionally, the control system supports microstep operation to ensure precise tracking. Intuitive operation via app and graphical star chart The ExploreStars app, specially developed for the PMC-Eight system, impresses with its graphically successful, intuitive user interface. The currently available alignment stars for system initialisation, as well as all celestial objects in the database, are displayed as a star chart with additional text information. All these objects can be easily viewed and selected. Powerful controller unit with Open GoTo for customisation The heart of the controller unit consists of a fully autonomous 2-channel multi-processor with 8 CPUs and a Wi-Fi Ethernet 10/100 adapter with IP functionality. This enables remote control via browser, ASCOM, app, or serial connection. With Open GoTo, you can also write your own firmware and load it into the controller unit, allowing for custom adjustments to the device functions and the creation of your own object lists. Polar finder included The pre-installed and included polar finder scope enables quick and precise polar alignment and long exposure times without unwanted star trails. The integrated LED lighting unit further enhances the usability of the polar finder. FEATURES TELESCOPE Type: Refractor telescopeLens diameter: 102 mm / Focal length: 600 mm / F/5.9Maximum useful magnification: 204xHigh-quality Hexafoc focuser with 2.5" clear internal diameter 6x30 finder with crosshair eyepiece; optimised finder mount for comfortable viewing 31.7 mm (1.25") star diagonal mirror Handle for easy transport with integrated camera holder (photo thread screw) Prism rail with stainless steel clamping surface (44 mm universal dovetail for GP/EQ5/LXD75) 50.8 mm to 31.7 mm adapter with integrated T2 adapter (optional T2 ring required) Smartphone adapter for sky navigation included Telescope for night and solar observation FEATURES MOUNT Powerful PMC-8 Open GoTo system User-friendly and graphically appealing ExploreStars OpenGoto app Wi-Fi control via tablet, notebook, or desktop PC with at least a 7" display and Wi-Fi functionality (not included) Compatible operating systems: WIN8.1, WIN10/11, iOS or Android 4.4 and higher Classic control via directional buttons or joystick for guiding, centring, correcting, and moving via touchscreen Intuitive 2-star and 3-star alignment for GoTo system initialisation Multiprocessor microcontroller with 8 CPUs Micro-stepper motors NEMA-11 Highly precise and quiet belt drive ST-4 compatible autoguider interface ASCOM driver available, also supports pulse guiding Ability to create your own firmware and object lists and load them into the PMC-8 GPS compatible / Settings dependent on the computer or tablet used Powered by 12-volt DC, with a maximum power consumption of 1.6 amps at full load SCOPE OF DELIVERY Optical tube 26 mm Super Plössl eyepiece (31.7 mm / 1.25") 31.7 mm (1.25") star diagonal mirror Integrated 31.7 mm and T2 adapter Prism rail with stainless steel clamping surface (44 mm universal dovetail for GP/EQ5/LXD75) 6x30 finderscope Rotating star chart Objective solar filter Tube rings with handle and camera holder Smartphone adapter for navigation Astronomy PC software Stellarium (via download) EXOS2-GT mount with Open GoTo PMC-8 Stainless steel tripod with built-in spirit level Counterweight 2 x 4.5 kg Polar finder with lighting unit Power supply 12 volts / 2 amps ExploreStars app via software download User manual

Silicone Eyecup 32mm Diameter for ES Eyepieces Category: Spare Part suitable for Eyepieces Description: The soft replacement eyecup with a 32mm diameter provides increased comfort during observation. Suitable as a spare part for EXPLORE SCIENTIFIC eyepieces. Ideal for spectacle wearers. It enhances observation comfort and reduces stray light. Easy to mount and maintain. Durable and easy to clean silicone material.