BRESSER Dovetail clamp Messier/ES/GP/Vixen

Set of 5 extension tubes with T2 thread on both sides for exact distances and secure hold of cameras for astrophotography. Also comes with SC to T2 thread adapter.In astrophotography, most cameras are connected to a telescope via a T2 thread (M42x0.75), the most popular international standard. However, in many cases, T2 and T2-ring adapters for connecting telescope focusers to a camera are not sufficient, as specific distances must also be observed. This is especially important when using correctors, reducers or flatteners. This extension tube set, which consists of 5 mm, 7.5 mm, 10 mm, 15 mm and 30 mm tubes, will allow you to obtain almost any distance using the corresponding combination. Each tube has a T2 interior thread on one side and a T2 exterior thread on the other side.Most telescopes either include a T2 thread adapter, or the eyepiece can be used with a simple T2 thread adapter with a 2” plug-in diameter (item no. 0510365).However, Maksutov-Cassegrain, Schmidt-Cassegrain, ACF or Ritchey–Chrétien telescopes may use a so-called SC thread. To allow you to use this extension tube set with these telescopes, the set also includes an SD to T2 thread adapter.FEATURES5 T2 tubes with lengths from 5 mm to 30 mmCombination of tubes allows you to obtain distances of 5 mm to 67.5 mmFor exact camera distances in astrophotographyDELIVERY CONTENT5x T2 extension tubes (5/7.5/10/15/30 mm)1x SC to T2 thread adapter

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.Excellent for entering into the hobby of astronomy: 90 mm aperture delivers 200 times more light than the naked eye! Observe craters, valleys and rims on the moon from nearly 400,000 km away just as you would look out of the window of a spaceship! The BRESSER MESSIER AR-90s does not only provide highly detailed views of the moon: Gaze at the division of the rings of Saturn millions of kilometers away or explore the Great Red Spot of Jupiter, a giant tornado in Jupiter's atmosphere. Watch the seasons on Mars and find the sickle of Venus.Richfield telescope with a short focal length of 500 mm. Suitable for traveling and to observe large open star clusters and the Milky Way. The MESSIER AR-90s gives you images that are many times brighter than the instrument Galileo Galilei was using for his famous explorations almost 400 years ago. This telescope is an optical tube without mount and tripod. CHARACTERISTICS Optical design: refractor telescopeLens diameter: 90 mm / focal length: 500 mm / F/5.5Maximum recommended magnification: 180xTelescope for night and solar observation 6x30 viewfinder with crosshair eyepiece Optimised finder mount for comfortable viewing 31.7 mm (1.25'') zenith mirror Smartphone adapter for celestial navigation includedSCOPE OF DELIVERY Optical tube 26mm Super Plössl eyepiece (31.7 mm / 1.25") 31.7 mm (1.25") zenith mirror 6x30 optical viewfinder Rotatable star map Aperture solar filter Smartphone adapter for celestial navigation Astronomy PC software Stellarium (via download)

The Polar fine adjustment unit is an accessory designed for installation of star tracking mounts such as POLARIE and the AP Star Tracker System with attachment between the photo stand and the star tracking mount. This device enables fine horizontal and vertical adjustment with installation of a polar axis target. The swivel head, which is designed exclusively for use on the base of star trackers, can be secured or removed with a single screw. The twin screw system for inclination and azimuth adjustment ensures fine movement and rigid locking. The adjustable inclination angle of 0ﾟ～85ﾟ enables use in a range of positions and situations. The fine adjustment range can be adjusted in three steps of low (0-30 degrees), medium (30-60 degrees) and high (60-85 degrees). FEATURES Fine adjustment unit for precise pole alignment For use on the AP and Polarie Star Tracker Adjustment range from 0° to 85° Photo stand connection (for 1/4'' and 3/8'' screws) Weight: 300 g WHAT’S INCLUDED Fine adjustment unit Allen key Adapter for 3/8'' screw

The POLARIE U is an ultra-compact automatic star tracking device that can be easily transported.In addition to the functions of conventional star trackers, which track a camera for a long exposures, accurately tracking the regular movement of celestial objects, the POLARIE U has a speed adjustment function, which allows it to be used as a panning mount too for time lapse photography.Using a smartphone, you can control the shutter release intervals of the images. Through the communication between the smartphone and the POLARIE U Star Tracker, you can control the exposures and take beautiful, sharp pictures of the stars and the Milky Way without getting any star trailing.The Star Tracker is very small and light weight, making it ideal for mobile use or air travel.The Vixen POLARIE U Star Tracker in detail:Star-scape photography (stars and landscape).A silhouetted landscape on earth is photographed together with the starry sky. The beauty of a landscape and the starry sky can be shown together on one photo. POLARIE U opens up a wonderful foreign world of star-scape photography and makes this possible for both beginners and advanced photographers.Conventional telescopic astrophotography photographs a relatively narrow area of the sky. Star-scape photography mainly uses a wide-angle lens and takes impressive photos in which stars, and other celestial targets such as the majestic Milky Way and landscapes are combined. The possibilities of the compositions are endless and a completely new kind of landscape photography opens up.Weight reduction of more than 20% and improved load capacity.The structure of the original POLARIE has been completely changed. The distance between the two bearings that support the rotating shaft is about four times the distance of the previous model. This leads to a higher load capacity despite the weight reduction of 20%. The maximum load capacity is 2.5 kg (approx. 2.5 kg at 10 cm from the centre of rotation) when used for wide-field astrophotography. The maximum load capacity is increased to 6.5 kg (approx. 6.5 kg at 10 cm from the centre of rotation) when a POLARIE Multi mounting block (optional) and a dovetail slide rail DD (optional) are combined. In addition, used in vertical configuration, the POLARIE U can reach a load capacity of 10 kg (approx. 10 kg 10 cm from the centre of rotation) for time-lapse photography and is therefore suitable for heavy camera equipment.Settings via SmartphoneCommunication between tracker and smartphone via the Vixen Polarie U App enables various settings via smartphones or tablet. For star/landscape photography, the speed is selected in user-defined mode, and for time-lapse photography, settings for interval time, exposure, and rotation speed can also be easily programmed.Five different speeds:Star-scape photography (half star speed). This setting is intended for displaying a landscape together with the starry sky. The stars are not tracked exactly, but slower in order not to blur the landscape in the foreground. This way you get beautiful images of the landscape and the starry sky.Wide Field Astrophotography (Star Speed)When this mode is selected, the POLARIE U follows the stars at the same speed as the daily movement of the stars. In this mode, widefield long time exposures of comets, nebulae, star clusters and the Milky Way are made and tracked precisely.Solar Tracking (solar speed)For recording solar eclipses over a long period of time.Moon Tracking (moon speed)For recording lunar eclipses over a long period of time.Custom ModeThis allows you to set the POLARIE U to the desired tracking speed. The initial setting is four times the star speed. If you want to change the setting for a different speed, a smartphone or other wifi device and application software are required.Shoot-Move-Shoot ModeIt is possible to stop the movement of the camera during the exposure and restart it after the end of the exposure. It is also equipped with a camera connector (shutter release) that controls the camera shutter during shooting with SMS or interval shooting. If the camera in use is connected with the cable release, the settings can be easily adjusted using a smartphone. A Wi-Fi connection is required when using this feature. An additional cable is required to connect the camera and POLARIE U together.Autoguider portCommercially available autoguiders can be used with the POLARIE U (Usable only in R.A.).  An important new feature over the original Polarie - attach a small Guidescope, or Off Axis Guider and autoguiding camera to your main camera and use the standard ST-4 protocol port to guide the Polarie U in Right Ascension, ensuring absolute accuracy of tracking (requires additional separate computer, or standalone guider). FEATURES    Speeds: Sidereal rate, 0.5X star speed, sun, moon. North / South hemisphere compatible    Operating System: Android 4.4 and over or iOS 9.9 and over Wi-Fi: IEEE 802.11b/g    Worm gear: RA gear rim with 144 teeth (58.4 mm Al alloy)    Screw: 9.8 mm brass    RA and DC axis: 40mm, aluminium alloy    Motor drive: electric motor drive with impulse motor (stepper motor)    Load capacity: 2.5 kg standard, 6.5 kg with special accessories, 10 kg with fast motion    Wi-Fi function for Smartphone    Direction finder tube: 8.9 degree field of view without magnification.    Power supply: USB Type-C or 4x AA batteries    Dimensions: 88.5mm x 72mm x 110.5mm    Weight: 575gSCOPE OF DELIVERY    POLARIE U Star Tracker    Attachable direction finder

​Vixen finder shoe for attaching a Vixen-profile finder bracket to your telescope (also works with many other finder brackets).PROPERTIESVixen standard connectionFixing with two screwsWHAT'S INCLUDEDVixen finder shoeFastening screws

Each dew shield threads into the front lens cell and effectively inhibits the formation of dew on the lens surface in humid/cool observation conditions. Reduces reflections caused by scattered light incident from the side. Protects the front lens from accidental contact and scratches. FEATURES Prevents fogging of the front lens Reduces reflections caused by stray light Protects the front lens of the telescope Use in humid/cool conditions Suitable for BRESSER MCX127/MC127 telescopes Easy to screw into the telescopic tube Length: 120mm , weight: 160g SCOPE OF DELIVERY Dew cap, 1 piece

Dovetail adapter with quick-release fastener for attaching various accessoriesEasy assembly and disassembly thanks to the quick-release fastenerThe adapter is compatible with thin mounting plates such as the ARCA-SWISS standard. The quick-release fastener of the mounting plate is clipped in from the side, making it easier to attach and remove small telescopes or camera accessories.Suitable for a wide range of different accessoriesThe M8 2-point attachment (35 mm spacing) makes it compatible not only with Vixen products, but also with many products from other manufacturers. The 1/4” standard camera thread in the centre allows for attachment to camera tripods and other equipment such as the SXP mount series.The long locking knob enables attachment to equatorial SXP mounts.Compatible equatorial mounts: SXP2 mount, SXP mountFEATURES    Low-profile mounting plate (ARCA-SWISS standard)    Screw: 1/4 inch screw hole    Screw holes: 2x M8 hole (35 mm spacing)    Can be used on: SXP, SXP2 equatorial mounts, VSD90SS    Material: Aluminum alloy    Dimensions: 87 x 55 x 15 mm    Weight: 67 gSCOPE OF DELIVERY    Dovetail adapter with quick-release fastener