BRESSER Extension Tube 37.5 mm for 2.0" R&P Focuser

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)

Five extension tubes from 30 to 5mm length with thread connection M48x0,75mm in a set. For adjusting different distances of the camera to the focal plane of the telescope or the corrector/field flattener. There is an M48.0,75 internal and external thread in each individual tube. The M48x0.75 thread is also called large T2 photo thread or 2.0 inch filter thread. Camera specific bayonet adapters or color and nebula filters can be used. Included are 5 different tubes with the steps 30, 20, 15, 10 and 5 mm. The larger free inner diameter of 45.0 mm effectively prevents undesired vignetting of the camera sensor. The outer diameter of the sleeves is exactly 50.65 mm and can therefore be mounted directly in any 2 inch diameter eyepiece adapter. FEATURES Extension sleeves M48x0,75 in set Five extension sleeves: 30, 20, 15, 10, 5 mm Use with correctors and field flatteners Distance adjustment from camera to focal plane Suitable for camera-specific bayonet adapters Also suitable for 2.0 inch colour and nebular filters Internal and external thread M48x0.75 mm (large T2 thread) Large inner diameter of 45.0 mm Outer diameter is 50.65 mm (2 inches) Black matt anodized aluminium Total weight 85 grams SCOPE OF DELIVERY Extension sleeves M48x0.75 (5 pieces)

Are you having trouble focusing your eyepiece or camera? Then use this BRESSER 20 mm extension sleeve to increase the distance between the 2.0 inch Rack & Pinion focuser and the eyepiece or camera. The extension sleeve has an M54x0.75 mm internal and external thread and can therefore be screwed directly onto the HEXAFOC draw tube. Suitable for the EXPLORE SCIENTIFIC ED APO Essential series, among others.FEATURESIncreases the distance to the eyepiece/camera Suitable for 2.0 inch R&P focuser Optical length: 20 mm Internal and external thread: M54x0,75 mmInside black matt coated Material: aluminium, black anodized SCOPE OF DELIVERYExtension sleeve 20 mm (1 piece)

This extension tube extends back focus depth to an additional 66 mm, for Vixen 60mm diameter focusers. It is suitable for extending compatible focuser drawtubes for use visually without a Star Diagonal but most commonly extends focus travel for astrophotography in a prime focus position, or for straight-through use with Barlow lenses and other accessories. FEATURES Compatibility: all Vixen OTAs with 60mm diameter drawtubes Weight: 115g SCOPE OF DELIVERY Extension tube 60 mm

The EXPLORE SCIENTIFIC 3" 0.7x Reducer/corrector, reduces a compatible telescope's focal length by a factor of 0.7x (for around f/8) and 0.8x (for around f/10) respectively. The reducer/corrector not only reduces the focal length but also flattens the field. Although originally developed for the Explore Scientific ED-APOs 127mm and 152mm, the reducer can be used with many systems - for example with the Explore Scientific ED-APOs 102mm and 165mm (please note, this will not work on the Explore Scientific 80mm ED Apo refractors though). With certain telescope focal lengths, a slight restriction of the correction at the edge of the image field can be expected when using full-frame sensors. This unit comes with 3" barrel adaptor for direct focuser thread M54x0.75 (the standard focuser thread of the Explore Scientific Essential series of ED Apos) and T2 camera adaptor. This reducer/corrector features a free aperture of 65mm, so that it can be used even with cameras that have a large sensor - if the telescope allows for this. Note: As previously mentioned, this Reducer/corrector comes with a screw on ring, which fits the standard focuser thread of the Explore Scientific Essential series of ED Apos. For telescopes which are equipped with the 2.5" HEX Focuser, the optional screw-on adapter part no: 0510366 is needed. Other telescopes, not in the Explore Scientific range, with standard 2" push-fit focusers will need the Explore Scientific 2" Adaptor for 3" Corrector - part no: 0510364 to get this reducer correctly fitted. SPECIFICATIONS Reduces the focal length by 0.7x at f/8 Flattens the field for astrophotography Developed for ED127 und ED152 APO telescopes Also fits Explore Scientific ED102 and ED165 telescopes - and others Free aperture: 65mm Inner thread for telescope adaption: M76x0.75mm Outer thread for camera adaption: M72x0.75mm 3" focuser barrel adaptor included Adaptor for Explore Scientific focuser M54x0.75mm included T2 camera adaptor M42x0.75mm included Diameter: 78.5mm; length: 100mm Length without adaptors: 52mm Weight without adaptors: 530g What's Included Reducer/Flattener 3" focuser barrel adaptor Adaptor for Focuser M54x0.75mm T2 camera adaptor M42x0.75mm Dust caps

High resolution deep sky camera with large Panasonic CMOS sensor and active cooling. Enter the world of astrophotography now. With the new EXPLORE SCIENTIFIC DEEP SKY ASTRO camera you get a modern complete package for the comfortable shooting of astro photos and videos. Finally, an easy-to-use camera for capturing galaxies, star clusters, the moon and even planets with high resolution and low sensor noise. Thanks to the fast USB 3.0 computer interface, all image data is transferred within a few seconds. Long waiting times are now history. Simply connect the camera to your telescope using the T2 female thread (M42.0.75mm) or the supplied 2" (50.8mm) plug-in adapter and after installing the drivers and the included EXPLORE Capture recording and editing software, you are ready to take the first real astro photos with a highly specialized camera for your application.  The EXPLORE Capture Pro software included in delivery not only offers the basic functions required for image and video capture, but also many helpful special functions for image post-processing and camera setup. Functions such as live image display, exposure settings, white balance, dark image print, stacking, timelapse recording and much more can be configured individually. Especially the very sophisticated software makes your entry into astrophotography really easy. With the automatic settings you can produce absolutely presentable results without any previous knowledge. If you like, simply switch off the automatic settings and gradually dare to adjust the individual professional settings. The new EXPLORE SCIENTIFIC DEEP SKY camera has a highly sensitive and very low-noise Panasonic CMOS sensor which is additionally cooled down to 40°C below ambient temperature by the two-stage thermoelectric cooling. In contrast to normal DSLR cameras, this guarantees much lower noise and fewer hot pixels in your shots. The images are not only much sharper and more brilliant, but also contain more usable image information. Through the controlled setting of the desired camera temperature, the creation of dark frames under reproducible shooting conditions is possible at any time. The large-format CMOS sensor with 21.9mm diagonal also allows large image fields and simplifies the adjustment and centering of objects considerably. The camera has a built-in USB hub with 2 x USB2.0 ports at the rear. Connect your additional autoguider camera or motor focus etc. via a short USB cable and reduce the risk of cable spaghetti and cable breaks. Separate cable connections between your accessories and your computer are no longer necessary. A sturdy hard case for the camera plus accessories is also included. IMPORTANT NOTES: Don't get confused by the megapixel data and the contrary price structure. In the field of astronomy, the key criterion is not the sensor resolution but the maximum light sensitivity. The main goal is to capture as much light as possible in a short time.DOWNLOAD latest camera software and drivers see download folder "Manuals" or here: https://www.touptek-astro.com/downloadsSample photos made by Lóránd Fényes in Hungary: https://fenyeslorand.hu/asztrofotok/Field of view for different focal lengths in arc minutes and degrees: 400 mm - 151´x 114´ (2.5 x 1.9 degrees) 500 mm - 121´x 91´ (2.0 x 1.5 degrees) 600 mm - 101´x 76´ (1.7 x 1.3 degrees) 700 mm - 86´x 65´ (1.4 x 1.1 degrees) 800 mm - 76´x 57´ (1.3 x 0.9 degrees) 900 mm - 67´x 51´ (1.1 x 1.9 degrees) 1000 mm - 61´x 46´ (1.0 x 0.8 degrees) 1250 mm - 48´x 37´ (0.8 x 0.6 degrees) 1500 mm - 40´x 30´ (0.7 x 0.5 degrees) 1750 mm - 35´x 26´ (0.6 x 0.4 degrees) 2000 mm - 30´x 23´ (0.5 x 0.4 degrees) FEATUREScamera type: ASTRO Camera 16.0MP ATR3CMOS16000KPA data output: single pictures and video image Sensor: Panasonic NM34230PLI CMOS Color Sensor adjustable resolution: 4648x3506 / 2304x1750 / 1536x1168 adjustable binning: 1x1 / 2x2 / 3x3 frame rate per second (FBS): 22.5 / 43 / 48 physical sensor size in pixels: 4648 x 3506 megapixel: 16 MP sensor size: 17.6 x 13.3 mm (4/3 inch) pixel size: 3.8 µm x 3.8 µm bit depth: 12 Bit backfocus: 17,5 mm  shutter Type: rolling shutterinternal camera memory: DDR 3 RAMthermoelectric cooling with fan: yes, up to 40°C below ambient temperature adjustable exposure times: 150µs to 60min operating temperature: -10 to +50°C (30-80% RLH) cable length USB 3.0: 150cm DC cable length power supply: 200cm CNC machined aluminium housing camera diameter: 80mm; length: 102mm camera weight: 0,53 kg camera connection diameter: 2.0 inch ( 50.8mm) camera connection thread: T2 (M42x0,75mm) filter thread: Yes, 2.0 inch in receptacle camera connection to PC: USB 3.0 built-in USB hub with 2 x USB 2.0 ports power supply: Power supply 12 Volt 3,0 Ampere included software: EXPLORE Capture included camera driver and ASCOM driver includedoperating system: WINDOWS 10 + 11 PC requirements: CPU Intel Core2 2.8Ghz or higher / 2 GB Ram / USB 3.0 SCOPE OF DELIVERYDEEP SKY ASTRO Camera 16.0MP telescope adapter T2 thread to 2.0" (50,8mm) USB 3.0 connection cable 150cm power supply 230V/12V3,0A dust cap software CD hard case instruction manual

The new BRESSER Messier 12" Dobson enhances this well-liked telescope series while providing great portability due to its lightweight fibreglass telescope tube. Despite its low price, it offers a variety of functions as well as quality that you would not find in considerably more expensive devices. Thanks to the powerful telescope aperture of 305 mm, you get significantly more light-gathering capacity than with the smaller models and are therefore not limited to observing the moon and the planets of our solar system - you can already look far out into the universe and observe globular clusters, nebulae and galaxies with even greater brightness. Details become visible in most deep-sky objects: globular clusters are clearly resolved into individual stars and gas nebulae, which can only be guessed at with smaller devices, show structure. The device is unrivalled in its versatility: The excellent large Hexafoc focuser has an aperture of 65 mm - so there is no noticeable obstruction from the focuser tube even with large wide-field eyepieces. Thanks to the large altitude wheels, even these heavier eyepieces are held effortlessly. And if a particularly large number of accessories is attached, such as a binocular attachment, then the entire tube can be moved inside the tube clamps - and everything is balanced again in a flash. The unrivalled rigidity of the focuser makes focusing easy - so photography with this tube is also possible. This is another strength of this universal telescope: if you want to take photos, you can simply unscrew the altitude wheels from the tube and attach it to an equatorial mount using a dovetail bar - so there's nothing standing in the way of astrophotography. An optional 10:1 gear reduction for the focuser is available for the highest demands. Considering that the focuser is the most frequently used part of the telescope, the use of the Hexafoc in this device is a quantum leap for this price range. With the initial equipment, you can start observing immediately - a 6x30 finder and a 25 mm SPL eyepiece are included in the scope of delivery. Various other viewfinder types can also be retrofitted using the 2 new hybrid viewfinder shoes (Art. 0620158) supplied as standard. In addition, the new 12" BRESSER Messier makes it easy to transport the device as compactly as possible - the rocker box can be dismantled in a few simple steps because the parts are assembled with metal quick-release connectors. This quickly turns a bulky rocker box into a handy flat package of individual parts. A telescope whose versatility, performance and user-friendliness set new standards in this price class. Includes a high-quality objective solar filter for safe observation of sunspots, eclipses and planetary transits. A BRESSER premium telescope for night and solar observation. NOTE: Please note that "Newtonian" reflector telescopes are very good for astronomical observations in the starry sky, but are not well suited for nature and landscape observations during the day. We therefore recommend BRESSER refracting telescopes for nature and landscape observations. FEATURESType: Reflector telescope Telescope for night and solar observation Lightweight but very stable GRP telescope tubePrimary mirror diameter: 12" (305 mm) parabolic main mirror Focal length: 1,525 mm Aperture ratio: f/5 Maximum useful magnification: 610x Theor. resolving power: 0.45 arcseconds Easy to balance the tube by sliding it inside the tube rings Visual limiting magnitude: 14.5 mag Tube: GRP tube with adjustable tube rings and aluminium altitude bearings Focuser: 2.5" HEXAFOC focuser with 2" and 1 1/4" adapter Shifting-free focusing even with heavy accessories Secondary mirror bracket: very thin 4-arm steel spider Tube rings and altitude wheels made from aluminumDifferent sized adjustment and counter screws on the mirror cell Use of the optics also on EQ mounts (with optional dovetail bar) Mount: Dobsonian system Dismantlable rocker box Accessory tray for one 2" and two 1 1/4" eyepieces, mounted on the front side Eyepiece: BRESSER Super Plössl 25 mm (1 1/4") Viewfinder: 6x30 viewfinderHybrid viewfinder shoes (Art. 0620158) included (2 pcs)Tube weight without accessories: 16 kgTube weight with accessories: 18.9 kg Rocker box weight: 14.8 kg Total weight: 33.7 kg Overall dimensions: 60 x 60 x 163 cm SCOPE OF DELIVERY Tube with Newtonian optics Aperture solar filter 6x30 viewfinder Hybrid viewfinder shoes (2 pcs)25 mm Super-Plössl eyepiece (Ø 31.7 mm / 1.25") 1 extension tube 37.5 mm for 2.5" Hexafoc 1 eyepiece adapter Ø 31.7 to 50.8 mm 2 tube rings 2 altitude wheels Rocker box with 2 base plates and mounting material (disassembled for self-assembly) Shipping dimensions Box 1: 150 x 53 x 50 cm - 24 kg Shipping dimensions Box 2: 61 x 61 x 24 cm - 17 kg