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BRESSER Messier EXOS 100 GOTO Mount

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Guides & Tips

FAQ - Frequently Asked Questions

That is normal. Finder scopes are only used to make objects easy to locate. The image orientation does not matter for observation.

  • Alt-azimuth: easy to use, moves horizontally and vertically
  • Equatorial: enables precise tracking of objects with only one axis – ideal for high magnifications and astrophotography

  • Moon: from 30 mm
  • Planets: from 100 mm
  • Deep sky: from 150 mm
Are you a member of an astronomy club? Find out here what your benefits are.
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Product and safety instructions


Manufacturer: 
Bresser GmbH, Gutenbergstraße 2, 46414 Rhede

Contact: 
www.bresser.de


Warning notes
  • General warning instructions DANGER! RISK of bodily injury! Never look directly at the sun or near the sun through this device. There is a risk of blindness! Sharp-edged and pointed tools are often used with this device. Therefore, store this device and all accessories and tools in a place inaccessible to children. There is a RISK of injury! Children may only use the device under supervision. Keep packaging materials (plastic bags, rubber bands, etc.) away from children! There is a risk of suffocation! FIRE HAZARD! Do not expose the device – especially the lenses – to direct sunlight! The light concentration could cause fires. NOTE! Do not dismantle the device! In case of a defect, contact your dealer. They will contact the service center and may send the device in for repair. PRIVACY PROTECTION! The telescope is intended for private use. Respect the privacy of others – for example, do not use this device to look into apartments!
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Accessories

EXPLORE SCIENTIFIC ED APO 80mm f/6 FCD-1 Alu 2" R&P Focuser
The three-lens design of the EXPLORE SCIENTIFIC ED-Apochromats provides everything an amateur astronomer desires - at a reasonable price. The construction with Hoya FCD-1 ED glass has two air spaces and provides a level of correction so superior to the two-lens constructions, that are common in this price class, that you will see the difference immediately. This excellent optical performance teams up with a high precision mechanics - the result is a telescope on a level that is setting a new standard in it´s price class. Astrophotographers will love this telescope - a optional field flattner is available and makes the telescope perfect even for cameras with a large chip format.These very popular EXPLORE SCIENTIFIC Triplet ED APO Refractors we do offer in 3 different product lines:Essential Line: HOYA FCD-1 Glass lens, AL-Tube, 2.0" Rack&Pinion Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112084(AL), 0112106(AL), 0112132(AL)), 0112155(CF + 3"FT)) Professional Line: HOYA FCD-100 Glas lens, AL/CF-Tube, 2.5" HEXAFOC Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112086(AL), 0112108(AL), 0112109(CF), 0112134(AL), 0112135(CF))High-End Line: OHARA FPL-53 Glass lens, Carbon(CF) Tube, 3.0" Feather-Touch Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112165(CF))FEATURESthree lens air-spaced ED-apochromatHoya FCD01-ED glasspolystrehl of above 0.9weight: 2,6kgbackfocus: 165mm above 2" adaptorSCOPE OF DELIVERYOptics with dovetail plate and finder slot 2" Star Diagonal 99% reflectivityDust caps for front-lens and focuser

Available

£799.00*
EXPLORE SCIENTIFIC ED APO 80mm f/6 FCD-100 Alu HEX
Highly corrected 80mm air-spaced triplet apochromat (with three lenses) and aluminium tube and a 2.5" high-precision HEXAFOC focuser.   Apochromats are the ultimate choice in small to medium sized telescopes: the combination of compactness, transportability, very high image contrast and sharpness together with the possibility to make excellent astrophotos cannot be bested. The advances in glass manufacturing during the last few years have made true apochromats available to more astronomy enthusiasts than ever before. The new Explore Scientific FCD-100 Alu Hex represents another major improvement in this field - the overall correction (color and spherical) is setting new standards in this price class. The optical design shows a polystrehl value of 0,97 indicating a level of correction that is absolutely top of the line.This small excellent apochromat is a very versatile telescope: the fast f-ratio makes short exposure times possible. The high contrast and sharpness of the image provide breathtaking views of large objects like the North america nebula or the Andromeda galaxy as well as tack sharp planetary images. The telescope is lightweight and compact - the dew shield slides down the tube to minimize size for transportation. Revolutionary glass and precision manufacturing created a telescope that offers observing joy on the highest level. This does not only qualify this telescope as the ideal travel scope, it is also the perfect choice for fast observations and for astrophotography. The excellent 2,5" HEXAFOC focuser with 10:1 reduction is perfect for this - the large inner diameter of 65mm prevents vignetting by the focuser when the telescope is used for astrophotography with large sensors.These very popular EXPLORE SCIENTIFIC Triplet ED APO Refractors we do offer in 3 different product lines:Essential Line: HOYA FCD-1 Glass lens, AL-Tube, 2.0" Rack&Pinion Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112084(AL), 0112106(AL), 0112132(AL)), 0112155(CF + 3"FT)) Professional Line: HOYA FCD-100 Glas lens, AL/CF-Tube, 2.5" HEXAFOC Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112086(AL), 0112108(AL), 0112109(CF), 0112134(AL), 0112135(CF))High-End Line: OHARA FPL-53 Glass lens, Carbon(CF) Tube, 3.0" Feather-Touch Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112165(CF))SPECIFICATIONSAperture: 80mmFocal Length: 480mmFocal ratio: f/6Weigth: 2,6kgBackfocus: 150mm above 2" adaptorDesign: Apochromat with three lenses, two air spaces and FCD-100 glassSCOPE OF DELIVERY Optical tube with retractable dew-shield 2.5" HEX focuser with 1:10 gear reduction 2" Star Diagonal 99% reflectivity Universal dovetail - GP levelDust caps for front-lens and focuser Universal finder slot

Available

£1,178.00*
EXPLORE SCIENTIFIC ED APO 102mm f/7 FCD-100 CF HEX
Highly corrected 102mm air-spaced triplet apochromat (with three lenses) and carbon fiber tube and a 2.5" high-precision HEXAFOC focuser.   Apochromats are the ultimate choice in small to medium sized telescopes: the combination of compactness, transportability, very high image contrast and sharpness together with the possibility to make excellent astrophotos cannot be bested. The advances in glass manufacturing during the last few years have made true apochromats available to more astronomy enthusiasts than ever before. The new Explore Scientific FCD-100 CF Hex represents another major improvement in this field - the overall correction (color and spherical) is setting new standards in this price class. The optical design shows a polystrehl value of 0,97 indicating a level of correction that is absolutely top of the line.This excellent apochromat is a very versatile telescope: the fast f-ratio makes short exposure times possible. The high contrast and sharpness of the image provide breathtaking views of large objects like the North america nebula or the Andromeda galaxy as well as tack sharp planetary images. The telescope is lightweight and compact - the dew shield slides down the tube to minimize size for transportation. Revolutionary glass and precision manufacturing created a telescope that offers observing joy on the highest level. This does not only qualify this telescope as the ideal travel scope, it is also the perfect choice for fast observations and for astrophotography. The excellent 2,5" HEXAFOC focuser with 10:1 reduction is perfect for this - the large inner diameter of 65mm prevents vignetting by the focuser when the telescope is used for astrophotography with large sensors. These very popular EXPLORE SCIENTIFIC Triplet ED APO Refractors we do offer in 3 different product lines:Essential Line: HOYA FCD-1 Glass lens, AL-Tube, 2.0" Rack&Pinion Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112084(AL), 0112106(AL), 0112132(AL)), 0112155(CF + 3"FT)) Professional Line: HOYA FCD-100 Glas lens, AL/CF-Tube, 2.5" HEXAFOC Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112086(AL), 0112108(AL), 0112109(CF), 0112134(AL), 0112135(CF))High-End Line: OHARA FPL-53 Glass lens, Carbon(CF) Tube, 3.0" Feather-Touch Focusser with 1:10, 2.0" Star Diagonal 99% Reflectivity (see Part No. 0112165(CF))SPECIFICATIONSAperture: 102mmFocal Length: 714mmFocal ratio: f/7.0Design: Apochromat with three lenses, two air spaces and FCD-100 glassWeigth: 3,3kg , lightweight due to carbon fiber tubeBackfocus: 150mm above 2" adaptorDesign: Apochromat with three lenses, two air spaces and FCD-100 glassSCOPE OF DELIVERYOptical tube with retractable dew-shield2.5" HEX focuser with 1:10 gear reduction  2" Star Diagonal 99% reflectivityTube rings with dovetail plate and handleExtension tubes for focusser (2pcs)Dust caps for front-lens and focuserUniversal finder slot 

Available

£2,109.00*
BRESSER Messier AR-102xs/460 Hexafoc Optical Tube
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. Ambitious beginners and advanced observers alike will see the brightest objects outside our solar system with the MESSIER AR-102xs. Watch details in the Great Orion Nebula from the astonishing distance of 1500 lightyears (14.200.000.000.000 km)! Scanning the lunar terminator is simply a pleasure. Scanning the Milky Way in Saggitarius shows a multitude of deep-sky objects. Richfield telescope with ED glass lens and a short focal length of 460mm. Suitable for traveling and to observe large open star clusterns and the milky way This telescope is only an optical tube without mount and tripod. FEATURESOptical design: refractor telescopeLens diameter: 102 mm / focal length: 460 mm / F/4.5Maximum recommended magnification: 204x Very high quality Hexafoc focuser with 2.5" free inner diameter 6x30 straight through viewfinder;optimized finder bracket for comfortable use 31.7mm (1.25") diagonal mirror Universal 44 mm Dovetail plate with stainless steel rail (fits LXD75/Great Polaris/EQ5) 50,8 mm (2'') to 31,7mm (1,25'') adapter with integrated T2 thread (optional T2-adapter ring for your camera is needed) telescope for night and solar observation SCOPE OF DELIVERY optical tube Eyepiece: 26 mm Super Ploessl 31.7mm (1.25") 31,7 mm (1,25") diagonal mirror integrated 31,7mm and T2 adapter Prism rail with stainless steel clamping surface (44mm universal dovetrail for GP/EQ5/LXD75) 6x30 viewfinder rotable star chart Objective Solar- filter Software Stellarium ( via Download)

Available

£389.00*
BRESSER Messier MC-100/1400 OTA Optical Tube
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 best catadioptic design named Maksutov-Cassegrain produces a sharp, crispy and high-contrast image. A perfect telescope for a convenient entry into astronomy.CHARACTERISTICSTelescope for night and solar observation High-quality Maksutov-Cassegrain optics with high focal length and extremely sharp image Ideal for small bright nebulas, globular clusters, the moon, planets Optical design: Maksutov-Cassegrain Maximum recommended magnification: 200x Aperture: 100 mm Focal length: 1400 mm Aperture ratio: f/14 Universal 44 mm Dovetail plate GP (fits LXD75/Great Polaris/EQ5) SCOPE OF DELIVERYMaksutov Optical Tube Assembly 26mm SuperPlössl eyepiece (31.7mm / 1.25") SC Eyepiece adapter (31.7mm / 1.25") Star diagonal mirror Dovetail plate for GP Level Adjustable polar finder scope with optional illumination LED viewfinder Aperture solar filter Rotatable star map Astronomy PC software Stellarium (via download)

Currently unavailable

£329.00*
BRESSER Messier MC-127/1900 OTA Optical Tube
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 best catadioptic design named Maksutov-Cassegrain produces a sharp, crispy and high-contrast image. A perfect telescope for a convenient entry into astronomy. CHARACTERISTICS Telescope for night and solar observation High-quality Maksutov-Cassegrain optics with high focal length and extremely sharp image Ideal for small bright nebulas, globular clusters, the moon, planets Optical design: Maksutov-Cassegrain Maximum recommended magnification: 254x Aperture: 127 mm Focal length: 1900 mm Aperture ratio: f/15 Optical coatings: Multi-Coating Universal 44 mm Dovetail plate with stainless steel rail (fits LXD75/Great Polaris/EQ5) SCOPE OF DELIVERYMaksutov Optical Tube Assembly 26mm SuperPlössl eyepiece (31.7 mm / 1.25'')SC Eyepiece adapter (31.7 mm / 1.25'') Star diagonal mirrorDovetail plate for GP LevelLED viewfinderAperture solar-filterRotatable star mapSoftware Stellarium (via download)Tube thread: M51x1.0mm

Available

£445.00*
BRESSER Full HD Deep-Sky Camera & Guider 1.25"
BRESSER Full HD Deep Sky Camera with autoguider: a great camera for different types of astrophotography and for autoguiding. Not only suitable for planets, but also for deep-sky objects such as galaxies, nebulae and star clusters. Dedicated ToupSky Astro Imaging software supports video preview, video recording, video processing, image capture and processing, dark field correction and raw data output. Easy to use, but with professional results. One of the main features of the new backlit SONY IMX290 CMOS sensor is its high light sensitivity, which makes it possible to detect deep-sky objects without active cooling. SONY has increased the quantum efficiency at 533 nm wavelength up to 77%, which is much better than other CMOS sensors have been able to achieve in the past. Connect this camera to a guidescope and attach the camera's built-in ST-4 port, directly to your telescope's equatorial mount guide port and autoguide - using many popular audioguiding programs (PHD, Guidedog and more). Autoguiding enables you to take accurate pictures with long exposure times of several minutes. Thanks to the extra light-sensitive camera, you now always have a suitable guide star to hand, even using short exposure times. An ST-4 protocol connection cable is also included. Simple automatic tracking at its best. You can use this camera with all guiding telescopes, or off-axis guiders that accept a 1.25 " tube, 1.25" filter thread (M28.5x0.6) or C-mount adapter 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/downloadsDownload INDI Driver: https://github.com/indilib/indi-3rdparty/tree/master/indi-toupbase SPECIFICATIONS Camera type: BRESSER / Touptek GPCMOS02000KPA color Sensor: SONY IMX290 CMOS color, backlit Image and video size: Full HD 1936 x 1096 pixels (video 15 FPS) Native sensor size in pixels: 1936 x 1096 Exposure times: 66µs to 16min Binning: YES, 2x2 Megapixel: 2.1 MP Sensor size in mm: 5.6 x 3.1 Pixel size: 2.9 µm x 2.9 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 "(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 driver included Field of view for different focal lengths in mm (given in arc minutes): 400mm - 48.2 'x 27.3' 500 mm - 38.6 'x 21.8' 600 mm - 32.1 'x 18.2' 700 mm - 27.5 'x 15.6' 800 mm - 24.1 'x 13.6' 900 mm - 21.4 'x 12.1' 1000 mm - 19.3 'x 10.9' 1250 mm - 15.4 'x 8.7' 1500 mm - 12.9 'x 7.3' 1750 mm - 11.0 'x 6.2' 2000 mm - 9.6 'x 5.5' SCOPE OF DELIEVERY Full HD camera C-mount adapter USB 2.0 PC connection cable with a length of 200cm Interface cable for ST-4 autoguider port with 150cm length Dust cap for camera tube Software CD

Available

£289.00*
LUNT LS300PS Dovetail Bar 300mm (GP level)
This dovetail plate with 300mm length is suitable for Lunt Solar Systems LS50THa, LS60THa, LS60MT, and LS80THa telescopes.The width of the dovetail is conform to the GP-level standard. Therefore it could be used at the BRESSER EXOS 1+2 mounts for example, but also at many other mounts. The telescope connecting screws are 1/4-20 inch size and they do not look out of the rail, which makes this rail a perfect match for many astronomical mounts. The distance between the screws is matched for the Lunt Solar Systems telescopes LS50THa, LS60THa, LS60MT, and LS80THa.Technical data:• Length: 300mm• Width: 44mm• Distance between screws: 35mm• Screws thread: 1/4"-20Delivered by order:• 1 x 300mm dovetail plate• 2 x 1/4"-20 screws

Available

£113.00*
EXPLORE SCIENTIFIC Counter Weight 1.0 kg for iEXOS-100 Mount
Additional Counter Weight 1.0 kg for EXPLORE SCIENTIFIC iEXOS-100 PMC-Eight Wifi Goto Mount to balance also larger telescope tubes.FEATURESAdditional counter weightBalance also larger telescope tubesFits to iEXOS-100 MountTotal weight: 1.0kgDiameter: 80mm; height: 30mmBore diameter: 14.7mmSCOPE OF DELIVERYCounter weight 1.0kg (1 pc)

Available

£31.00*
EXPLORE SCIENTIFIC Precision AZ Adjuster for iEXOS-100 Mount
The Azimuth Adjuster Adapter is designed for use on the iEXOS-100 tripod, but requires slightly modification of the tripod base. See the manual for details of the required modification. This device allows iEXOS-100 users to make fine azimuth adjustments for precise polar alignment. Customer comment: I tried it out for the first time last night. It's now even easier to get polar aligned (using Sharpcap).... It's an easy installation with the newly included parts to install the post and the clear instruction manual. Thanks ES! - Jay Sanchez (USA) FEATURES Allows iEXOS-100 users to make fine azimuth adjustments Quick and comfortable adustment for polar alignment Full aluminum design - no plastic Only slightly modification necessary (one hole to be drilled) SCOPE OF DELIEVERY Precision AZ Adjuster Installation manual

Available

£105.00*
EXPLORE SCIENTIFIC Pole Finder Scope for iEXOS-100 Mount
Optical pole finder scope for fast and precise polar alignment of the EXPLORE SCIENTIFIC iEXOS-100 EQ mount. The EXPLORE SCIENTIFIC Pole Finder Scope is used with the EXPLORE SCIENTIFIC iEXOS-100 EQ mount (Art. No. 0456100) and allows a very precise alignment to the celestial pole by unsing the illuminated crosshairs and constellation markings. Simply adjust the pole height and azimuth until the constellation markings in the polar finder match the constellations in the sky - that's it. Ideal for optimizing tracking accuracy in astrophotography. FEATURES Optical pole finder scope with illumination To optimize the polar alignment Suitable for EXPLORE SCIENTIFIC iEXOS-100 EQ mountIlluminated crosshairs and constellation markings Quick and easy to use SCOPE OF DELIVERYPolar finder scope iEXOS-100Mounting material Instruction manual  

Available

£105.00*
EXPLORE SCIENTIFIC Camera Dovetail Kit for iEXOS-100 Mount
Universal mounting rail for mounting a photo camera on an EQ mount with Vixen GP mount for astrophotography. The EXPLORE SCIENTIFIC camera dovetail rail is made of die-cast aluminium. The dovetail-shaped mounting rail is 45 mm wide (similar to the Vixen dovetail style) and 280 mm long. The matt black anodized surface has a laser engraved scale on one side with a fine graduation with 2 mm increments. This makes it easier to determine the center of gravity when placing the camera on the mounting head. To protect the clamping surface there is a stainless steel clamping plate on the opposite side. The dovetail plate is equipped with rubber inserts at 3 positions. This allows a secure mounting of the camera equipment and prevents unintentional slipping and twisting. The mounting rail has a screw fastening with 1/4 inch photo thread, which is suitable for almost all commercially available camera systems. The screw attachment can be used in 3 different elongated hole positions to adjust a perfect balance. In addition, an adapter from 1/4 inch to 3/8 inch photo thread is also included, so that ball heads with the larger thread version can also be used directly. The camera mounting rail weighs only 250 grams. Suitable for all EXPLORE SCIENTIFIC and BRESSER mounts and also mounts of other brands that accept the popular Vixen-GP dovetail rail. FEATURES Universal camera mounting rail Dovetail with 45 mm width Length 280mm; weight 250 grams Suitable for EQ mounts with Vixen GP dovetail Camera mounting screw with 1/4 inch photo thread Thread adapter 1/4 inch to 3/8 inch Laser engraved scale with 2 mm fine graduation Stainless steel clamping plate Rubber inserts against slipping and twisting 3 elongated holes for mounting the camera SCOPE OF DELIVERY Camera mounting rail Mounting screw 1/4 inch Thread adapter 3/8 inch

Available

£109.00*