EXPLORE SCIENTIFIC

The TELRAD viewfinder is a projection finder that can be installed on any telescope and makes it child's play to align the telescope with the starry sky.The TELRAD viewfinder is a practical alternative to classic optical viewfinders and illuminated red dot viewfinders. You can see the complete starry sky without magnification, and not just a small section as with a normal optical viewfinder. Against this background of the starry sky, three red luminous concentric rings are projected, with apparent diameters of 4 degrees, 2° and 0.5° in the sky. Move the telescope so that the object you are looking for is in the inner ring, and the telescope points in the right direction. Because the object you are looking for is inside the ring, it will not be irradiated like a normal illuminated red dot finder.The base of the TELRAD viewfinder is self-adhesive and can be mounted on all telescopic tubes from about 10cm diameter. The length of the base is about 18cm. This base remains on the telescopic tube, the TELRAD viewfinder itself can be removed or attached at any time by means of the attached quick coupling. The TELRAD is powered by two normal AA batteries (not included).There are star atlases, like the "Deep Sky Travel Atlas" from Oculum-Verlag, and planetarium programs for the PC, like the program "Stellarium", where the three rings of the TELRAD are already drawn or can be displayed around the interesting celestial objects. This makes finding these celestial objects a real walk.FEATURESTELRAD projection finderIlluminated rings of 4 degrees, 2° and 0.5° in the skySee the complete starry sky without magnificationEasy installation and useCan be installed on nearly every telescopesBase with quick release coupling included Powered by two AA batteries (not included) Very long battery life because of LED technologySCOPE OF DELIVERYTELRAD viewfinder with projector and battery compartment TELRAD base with quick-release coupling for the viewfinder Adhesive tape for attachment to telescope

A new take on a classic design, superior to the usual red dot finder - which will fit many telescopes and larger binoculars.Explore Scientific ReflexSight™ LED projection viewfinder, uses proven functionality with versatility, while having enhanced performance features.Looking through this viewfinder shows multiple deep red target circles projected against the night sky.  Both eyes can be used for quick and easy star hopping, in order to target objects in your telescope. The big advantage is that you can see the entire night sky without magnification and not just a small section of the sky, as you would through a magnified finderscope.  This makes Goto aligning quick and easy and speeds up acquisition of targets.New "Multi-Dot" target circle pattern (in standard circle diameters of 4.0 degrees, 2.0 degrees and 0.5 degrees), prevents blocking of stars within the field of view.  Using the widths of the projected circles as reference points allows those users with non-goto telescopes to easily work out the location of non-visible targets, with reference to more easily visible stars.  The projection screen size is a generous 55 x 35 mm.Multiple mounting options. The Explore Scientific ReflexSight™ LED projection viewfinder's base fits standard "Vixen-style dovetail" finder bases, allowing the user to attach this finder to a wife array of commercially-available telescopes, without modifying the telescope itself. A ¼ inch x 20G threaded adapter (photo tripod thread) is built into the finder base, allowing the finder to be attached to a variety of telescopes, via piggyback camera adapters with a photo tripod threaded hole.Functional design and intuitive use: the smooth housing, with no sharp corners, prevents snagging. Easily accessible battery compartment, taking 2x standard AAA alkaline batteries (not included), which power the frugal LED illuminator. The low power consumption of the LED lighting ensures a long operating time. Large, continuously adjustable brightness control with knurled knob head can be easily operated with gloves. Click the rotary switch to turn off completely. Rear-facing, tool-free three-point parallax knurled collimation knobs, again, easy to operate even with gloved hands, ensure you are well locked-on to the main optical axis of your telescope. The projection screen is coated, to minimise annoying reflections and allow you to concentrate on the finder's target and the night sky behind it.  Comes complete with screen and optics cover. The extremely compact design allows mounting even on small, lightweight telescopes - truly a finder for all!FEATURESReflexSight LED projection finder with deep red target circles Standard circle diameters 4.0 degrees, 2.0 degrees and 0.5 degreesProjection screen size: 55 x 35 mmFits standard Vixen-style dovetail finder shoes There is also a ¼ inch x 20G female photo tripod thread in the base Can be mounted via piggyback camera adapters etc. Operates on standard AAA batteries (not included) Smooth housing with no sharp corners, prevents snagging Comes complete with optics and screen cover Compact design and easily accessible battery compartment Large, continuously adjustable brightness control with knurled knob Click switch to turn off completely Tool-free three-point collimation parallax adjustment with easily accessible knurled knobs Can also be mounted on small and light telescopes WHAT'S INCLUDEDReflexSight LED projection finder 

With teleextenders it is possible to extend the effective focal length of a telescope system, resulting in higher magnification for the observation of the moon, the planets or small Deep-Sky objects with the same eyepieces. So you can use the advantages of eyepieces with longer focal length - such as the bigger eye distance and the more relaxed observing comfort - at high magnifications also.These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.Features: Suitable for visual observations and astrophotographyDoubling the effective total focal length of the telescopeFour lens telecentric design Fully multicoatedFilter thread for color or nebula filters

The Vixen dew cap heater prevents your optics from fogging up due to dew.A must-have accessory for cold and damp nights.FEATURES Consumption: 16.2 Ohm (12 V, 8.9 W) Dimensions: 655 mm long heater with 2.2 m cable Connection: 2.1 socket with medium-negative polarity Weight: 120 g DELIVERY CONTENT Battery box Vixen dew cap heater

With teleextenders it is possible to extend the effective focal length of a telescope system, resulting in higher magnification for the observation of the moon, the planets or small Deep-Sky objects with the same eyepieces. So you can use the advantages of eyepieces with longer focal length - such as the bigger eye distance and the more relaxed observing comfort - at high magnifications also.These teleextenders incorporate a telecentric optical design that deliveres a excellent image sharpness over the whole field of view and are premium choices for visual observations and astrophotography. The combination of excellent fully multicoating with superior optical design makes the Focal Extenders superior to classic Barlow lenses.FEATURES: Suitable for visual observations and astrophotographyDoubling the effective total focal length of the telescopeFour lens telecentric design Fully multicoatedFilter thread for color or nebula filtersSCOPE OF DELIVERY: Fokal Extender 2 x Adapter 2" (50,8mm) auf 1,25" (31,7mm)

Finally, a universal tracking kit is available, which is easy to assemble and handle. Consisting of a telescopic sight, a tracking camera and the required prism clamp you can start long-term photography with active tracking control (autoguiding). Simply mount the prism clamp with the mounting screws on the carrying handle of the BRESSER Messier and EXPLORE-SCIENTIFIC telescopes and the AR90 / 500 guide scope with tracking camera can already be fixed stably parallel to the main telescope. The tracking camera is now connected directly to the ST-4 compatible autoguider socket of your telescope mount. Connecting the tracking camera via USB cable to your Windows computer and install the camera drivers and any Autoguider software - you can start with the astrophotography. The prism clamp has 2 x 6mm countersunk holes (35mm hole spacing) and 3 further 1/4 "photo tapped holes to allow for versatile adaptation to a variety of other telescopes and adapter plates. The tracking camera is very useful for tracking Recording of planets and even deep-sky objects. A detailed description of the tracking camera can be found at the BRESSER article number 4959050. NOTE: It is necessary to mount the camera on the telescope using the diagonal mirror so that focusing will work.NOTE: The autoguider software is not included. You can use PHD Guiding, Guidedog, Metaguide, Guidemaster (Freeware) or AstroArt, MaxIm DL (chargeable).DOWNLOAD PHD-Guiding: http://www.stark-labs.com/phdguiding.html DOWNLOAD GuideDog: http://barkosoftware.com/GuideDog/index.html FEATURES Universal BRESSER Guiding Kit Guiding-scope, guiding-camera and dovetail clamp included For long exposure Astrophotography with autoguiding Aperture of guiding-scope: 90mm Focal length of guiding-scope: 500mm Screw set for Messier/ES handle included Fits also to many other telescopes SCOPE OF DELIVERY Guiding-scope BRESSER Messier AR90/500 (Art.Nr. 4890500) + Acc. Guiding-camera BRESSER GPCMOS02000KPA color (Art.Nr. 4959050) Dovetail-clamp for Messier/ES/GP/Vixen (Art.Nr. 4910220) Screw-set for Messier/ES handle included USB 2.0 cable (camera to computer) ST-4 cable (camera to teleskope mount) Camera driver software + ASCOM driver Professional ToupSky imaging softwareAperture solar filter for solar observing included

Top viewfinder telescope with upright field, illumination, 90° view and pole viewfinder engraving - image sharpness and viewing behavior raise this viewfinder significantly above the level of the usual 8x50 viewfinder telescopes. The upright image field facilitates orientation. Multi-Coating on all surfaces. This polar finder is mainly intended for the observer with a transportable telescope. The 90° view facilitates operation, and with the help of the pole scale and the lighting, a telescope can be quickly and safely aligned to the celestial pole. The upright field of view makes the handling together with the high image sharpness a pleasant experience. The lighting is powered by two LR41 button cells.