EXPLORE SCIENTIFIC 1.25" Filter Grey ND0.9

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

This polarizing filter can be used for example at the Lunt Solar Systems 1.25" White-Light Herschel-wedge (0558211).FEATURESLinear polarizing filterFilter mount with 1.25" filter threadSCOPE OF DELIVERY1x 1.25" polarizing filter

Who doesn't dream of exploring the vastness of the universe with their own eyes? This complete telescope set comes with everything you need for your journey to open star clusters and distant emission nebulae: an astronomical reflecting telescope with 114 mm aperture and 500 mm focal length, an equatorial mount, a tripod and extensive accessories for astronomical observations. You can immediately start your very own adventure in astronomy, because the system is very easy to handle and transport. Especially wide-field observations in the Milky Way are a joy to watch through the beginner's telescope. A classic for a start - the telescope With the classic reflector telescope, a so-called Newtonian reflector, you’ll achieve a successful start in sky observation. A special feature of this type of telescope is that you don’t look in at the back of the telescope, but at the side in the front. The advantage is the comfortable observation position. So you don't have to bend down when the entry-level telescope is pointed vertically into the sky. In terms of optics, these reflecting telescopes are impressive in that they are absolutely free of chromatic aberrations and offer good imaging properties.  With its 114 mm aperture, the entry-level telescope already collects a lot of light from celestial objects. In addition, 114 mm aperture and 500 mm focal length result in a very short focal ratio (ratio of the aperture to the focal length) of about 1 to 4.4 (F/4.4). This causes the telescope to be very fast and to deliver an extremely bright image. The fast focal ratio and the short focal length cause the telescope to be a specialist for observing structures in the Milky Way and extended gas nebulae, for example the North America Nebula NGC 7000. This way a ''walk'' through the Milky Way with low magnification is simply a lot of fun. And you can choose the perfect place for it, because the entry-level telescope is very compact and therefore easily transported. And how closely will you be able to look? The aperture of 114 mm offers a resolving power that allows magnifications of up to about 230x with sharp images. Technically, even higher magnifications are possible - theoretically up to 375x by using the included accessories. However, as the magnification increases, the sharpness of the image may slowly decrease. Of course, it is not only your telescope that determines how much you can magnify. The air turbulence in the atmosphere (seeing conditions) is also an important factor. Note for nature lovers: If you choose a Newtonian telescope like the Pluto reflector telescope, you can look forward to a specialist in astronomical observation. However, the image is always displayed sideways as well as upside down, which makes no difference when observing the sky. However, this type of telescope is less suitable for nature and landscape observations during the day. Would you also like to use your new telescope for exciting nature discoveries? Then we recommend that you choose one of the BRESSER refractor telescopes. The perfect foundation for your astro-start - mount and tripod Have you found the ideal location for your celestial observations? Then simply attach the telescope tube to the height-adjustable tripod with equatorial mount. It makes tracking particularly easy, because in contrast to an azimuthal mount, you do not need to move both axes at the same time. So you simply align one axis parallel to the Earth's axis by pointing it approximately at Polaris. This process is called ''alignment''. After that, you track your celestial bodies only on this one axis. Another plus of the mount are the two flexible shafts with fine adjustment. They make adjusting and tracking the beginner's telescope particularly precise and comfortable. Very handy: A storage plate mounted between the tripod legs allows easy access to your accessories.Keep track of things automatically: For this telescope’s equatorial EQ-3 mount, the tracking motor with item number 4951400 is available as an optional accessory. This eliminates the need to manually track a celestial object set in the telescope. When this motor is installed at the mount, it automatically tracks the celestial object, keeping it in the field of view of the eyepiece. This makes observing the night sky even more comfortable! Everything included - the accessories Unpack, set up and start your journey of discovery across the night sky right away – for this purpose the astronomy set comes with all the necessary accessories. Get the perfect overview with the LED viewfinder. To do this, the viewfinder is simply installed parallel to the actual telescope. Turned on, it projects a red dot onto a small ground-glass screen. Look through it and it appears to hover in front of the night sky in exactly the direction in which you have aligned your entry-level telescope. Thus precise telescope alignment and finding celestial objects becomes child's play when you are using the LED viewfinder. A larger field of view or more details? With the two eyepieces (4 mm and 20 mm) you can admire the objects in different magnifications. The 3x Barlow lens goes one better: it allows you to triple the magnification of the eyepieces. But it doesn't have to stop there: If you ever want to expand your astronomy set, you can choose from a variety of additionally available eyepieces. After all, the socket diameter of 31.7 mm (1.25 inch) follows an international and manufacturer-independent standard. Observe the star of our daytime sky completely safely – to this end a solar filter is included with the entry-level telescope. Take a closer look at the sunspots and marvel at the granulation on our very own star. CAUTION: Never point the telescope at the Sun without the solar filter! For quick snapshots of special discoveries, grab the smartphone camera adapter. This way you can delight yourself and your friends again and again with fascinating astrophotos, for example of the Moon or the Sun. FEATURES Reflector telescope for beginners with 114 mm aperture and 500 mm focal length Reflector type Newton Ideal for observing the Milky Way and extended gas nebulae at low magnifications Height-adjustable tripod with equatorial EQ3 mount Easy to use, very good for beginners Focal ratio F/4.4, therefore very fast and bright image Very compact, easy to transport 31.7 mm eyepiece extension (1.25 inch) Two eyepieces and one Barlow lens with 31.7 mm (1.25 inch) focusers for different magnifications Safe solar observation with the included solar filter Entry into astrophotography with smartphone camera adapter SCOPE OF DELIVERY Telescope Aluminium tripod Equatorial EQ3 mount Eyepieces: 4 mm and 20 mm (1.25-inch socket) Barlow lens 3x (1.25-inch socket) LED illuminated dot finder Solar filter Smartphone camera adapter Accessory tray Astronomy software download Instruction manual

Color Filter Set Essential is recommended for Moon & Planets from 50mm (2") Aperture Essential Set includes the following filters: BRESSER Filter Red (1,25):The blue/blue green light is totally blocked. The contrast between the card and the lighter zones will enormously increase. This is truly helpful when you watch Jupiter or Saturn. Or for mars, watching the poles. BRESSER Filter Green (1,25):The green filter is to increase the contrasts enormously between the red and the blue regions of the cloud structures on the gas planets Jupiter and Saturn. Seeing our Earth Moon through the green filter, the contrasts of each ray crater become clearly more visible.BRESSER Filter Blue (1,25):The color of light blue really supports watching the high clouds on Mars. The contrast increases. The dark red structures will be shown even darker, so this is the perfect filter for watching the big red Flecks on the gas planet Jupiter. The rings of Saturn will be accentuated, the structures of the Venus Atmosphere will be even finer. BRESSER Filter Yellow (1,25):Watching the Moon surface through the filter, the contrasts will enormously increase. Same with planet Mars. On the huge planet Jupiter, when using the filter, you can even see the contrasts between the cloud-bands and a lot more details. Starting with a telescope diameter of 8“ and a clear sight, you even get to see various details of Saturn. What ist a color Filter for and do we really need it? Color Filters darken the light slightly, that reaches the eye or the sensor of the camera. This eliminates for instance stronger transitions. The result is that your picture turns out with more contrast which automatically shows more details. FEATURESVersatile colour filter set For eyepieces and accessories with 1.25" filter thread Increase contrast on moon and planets Making object details more visibleSCOPE OF DELIVERY4pcs color filter: Red, Green, Blue, Yellow

The neutral density filter transmits light uniformly across the entire visual spectrum. It serves as an excellent filter to reduce glare and irradiation when observing the Moon with any telescope 4"(10.2cm) and larger. The ND96 filter may also be employed in the splitting of close double stars where one of the binary pair significantly exceeds the other in brightness. Color Filter #ND96 Moon Filter (0.9 density; 13% transmission)

Filter Set 3 is recommended for Moon & Planets from 150mm (6") Aperture Set 3 includes the following filters: Explore Scientific Filter 1.25" Light Blue No.82A - 0310265 The color of light blue really supports watching the high clouds on Mars. The contrast increases. The dark red structures will be shown even darker, so this is the perfect filter for watching the big red Flecks on the gas planet Jupiter. The rings of Saturn will be accentuated, the structures of the Venus Atmosphere will be even finer. Explore Scientific Filter 1.25" Violet No.47 - 0310272 The purple filter is perfect for watching Venus. Seeing through it, the dark clouds of the Venus atmosphere become even better visible. He also clears up the structures of the rings around Saturn. Using big openings and having a clear sight this filter is also good for watching Merkur. Explore Scientific Filter 1.25" Light Red No.23A - 0310271 The blue/blue green light is totally blocked. The contrast between the card and the lighter zones will enormously increase. This is truly helpful when you watch Jupiter or Saturn. Or for mars, watching the poles. Explore Scientific Filter 1.25" Yellow-Green No.11 - 0310269 Watching the Moon surface through the filter, the contrasts will enormously increase. Same with planet Mars. On the huge planet Jupiter, when using the filter, you can even see the contrasts between the cloud-bands and a lot more details. Starting with a telescope diameter of 8“ and a clear sight, you even get to see various details of Saturn. What ist a color Filter for and do we really need it? Color Filters darken the light slightly, that reaches the eye or the sensor of the camera. This eliminates for instance stronger transitions. The result is that your picture turns out with more contrast which automatically shows more details. FEATURES Made from high-quality optical glass Filter glass is absolutely parallel All optical surfaces have anti reflex coatings Filter housing from black anodized aluminum Filter threads on both ends (female/male) Multiple filters usage is possible SCOPE OF DELIVERY 4pcs color filter 4pcs protection-case

Enter the world of astrophotography now. With the new BRESSER HD moon and planet camera with ST4 autoguider function. This camera is very good for astrophotography with short exposure times, i.e. for celestial objects like the moon, planets or star clusters. For astrophotography with long exposure times for low light deep sky objects, like galaxies and gas nebulae, we recommend the BRESSER Full HD Deep-Sky Camera (Art. No. 4959050) instead, with it's even higher resolution and sensor sensitivity. Equipped with the new high-sensitivity SONY IMX225 CMOS colour sensor, the BRESSER HD moon and planet camera delivers amazing image results with very short exposure times, even with simple telescope equipment. In addition, this ultra-modern camera can also be used as an autoguider, e.g. to actively track the main imaging device with SLR or CCD astro camera. A universal CMOS colour camera that delivers super-sharp lunar and planetary images in particular. The particularly low noise level of this new chip generation from SONY, ensures an exceptionally high brilliance and no cooling is required. Due to the high native pixel resolution of 1280x980, together with suitable telescopes, very beautiful images of the moon, but also detailed planetary images are possible. The ToupSky pro software included in the scope of delivery not only offers the necessary basic functions for image and video recording, but also many helpful special functions for image post-processing and for setting up the Guider. Functions such as live image display, exposure settings, white balance, dark image capture, stacking, timelapse recordings and much more can be individually configured. Especially the very sophisticated software makes it really easy for you to get started in astrophotography. With the automatic settings, you can produce absolutely presentable results without much prior knowledge. If you wish, simply switch off the automatic settings and gradually venture into the individual professional settings. Connect the camera directly to the ST4 connector of your telescope mount and you have fully automatic tracking control. This makes long exposures of several minutes possible without the stars producing unwanted line marks due to the ever-present synchronisation fluctuations of a telescope mount. A corresponding ST-4 connection cable is even included with the camera. Due to the high light sensitivity of the camera, you will always find a suitable guide star even with very short exposure times. For connection to guide tubes or off-axis guiders, the camera has a 1.25" plug-in sleeve, 1.25" filter thread (M28.5x0.6) and C-mount thread (1 "x1/32"). IMPORTANT NOTES: This is not a stand-alone guider camera. You always need a Windows 10 / 11 computer to take pictures and for autoguiding. The autoguider software is not included. You can use PHD2 Guiding, Guidedog, Metaguide, Guidemaster (freeware) or AstroArt, MaxIm DL (paid). DOWNLOAD PHD2-Guiding: https://openphdguiding.org/ DOWNLOAD GuideDog: http://barkosoftware.com/GuideDog/index.html DOWNLOAD latest camera software and drivers: https://www.touptek-astro.com/downloads SPECIFICATIONS Camera type: BRESSER / Touptek GPCMOS01200KPF color Sensor: SONY IMX225 CMOS colour Image and video size: Full HD 1280 x 960 pixels (video 30-54,4 FPS) Native sensor size in pixels: 1280 x 960 Exposure times: 102ms to 16min Binning: YES, 1x1 and 2x2 Megapixel: 1.2 MP Sensor size in mm: 4.8 x 3.6 Pixel size: 3.75 µm x 3.75 µm Bit depth: 8/12 switchable ST-4 Compatible Autoguider: YES CNC milled housing made of aluminum Protective strap on the camera housing Camera tube diameter: 1.25 inch (31.7 mm) Camera connection thread: C-mount + 1.25 "filter thread Computer interface: USB 2.0 C-mount extension tube with 1.25 inch filter thread included No IR cut filter installed Operating system: WINDOWS 10 + 11 ASCOM and WDM driver included Field of view for different focal lengths in mm (given in arc minutes): 400 mm - 41,2'x 30,9' 500 mm - 33'x 24,7' 600 mm - 27,5'x 20,6' 700 mm - 23,5'x 17,7' 800 mm - 20,6'x 15,4' 900 mm - 18,3'x 13,7' 1000 mm - 16,5'x 12,4' 1250 mm - 13,2'x 9,9' 1500 mm - 11'x 8,2' 1750 mm - 9,4'x 7,1' 2000 mm - 8,2'x 6,2' SCOPE OF DELIEVRY HD camera C-mount adapter USB 2.0 PC connection cable with a length of 180cm Interface cable for ST-4 autoguider port with 150cm length Dust cap for camera tube Software CD