OU  Although we were observing from a suburban site, the large aperture did its job collecting lots of photons and we started searching out some of the numerous galaxies in the spring sky. Explore Scientific 12" Truss Dob Gen II -- dimensions & DSC? The scope came extremely well packed in a huge 52kg box. points de fidélité. To speed things up, two 12V fans  sit in the side of the mirror box, one wired to suck and the other to blow. A sturdy 16-inch reflector that’s surprisingly easy to transport and assemble, Price: £2223.00Aperture: 16-inch (405mm)Focal Length: 1,825mm, f/4.5Weight: 40kgSupplier: Telescope HouseTelephone: 01342 837098Website: www.telescopehouse.com. Télescope Dobson ultra-compact de 508 mm de diamètre (20") de conception moderne avec une structure réalisée entièrement en aluminium. Abonnez-vous à notre newsletter et ne manquez jamais une offre spéciale. We tested their Generation II 16-inch option, which has been upgraded recently to improve its mechanics. Référence : 19208. Although the Explore 16-inch is a big aperture scope, its design makes it relatively simple and lightweight to assemble and use. A thin crescent Moon was low in the west as dusk fell and we had a lovely crisp and detailed view of the lunar landscape. If you’re troubled by nearby lighting, though, you might want to consider rigging up a lightweight shroud around the truss poles to help keep out stray illumination. Secondary adjustment is achieved via three spring-loaded knobs while the adjustment of the primary is accomplished by use of a specially supplied pole with a hex key at the end. Dernier né de la gamme Dobson UL Explore Scientific, il vous ouvre, grâce à son diamètre d'un demi-mètre, une nouvelle fenêtre sur l'Univers avec des perspectives d'observations enthousiasmantes que ce soit pour le ciel profond ou en planétaire du fait de son ouverture et de la qualité de ses optiques. Instead the secret was to add or remove counterweights from the mirror box until it balanced at our desired altitude. I also bought a small portable power station/jump starter to hook to the fans instead of individual AA batteries. Size:12" -- Generation II Explore Scientific 12" (305mm) Truss Tube Dobsonian. The mirror has a well-designed support system and two rollers at the bottom edge to support the mirror weight at low altitude. We tested their Generation II 16-inch option, which has been upgraded recently to improve its mechanics. Works perfectly. Dobson Ultra Light 508 mm génération II Explore Scientific, Envoyer The body of the red dot finder was so loose it kept going out of alignment and even at the lowest settings was much too bright. The Explore design brings the weight right down while maintaining strength and rigidity. The total weight of the scope is an impressively low 40kg. This is a Generation II telescope.All updates have been performed on this telescope. A lot of thought has gone into the collimation method. Dobson Explore Scientific 305/1525 Génération II Rapport F/D : 5,0 Magnitude limite visuelle : 14,4 Clarté : 2584 x Pouvoir séparateur : 0,39" Livré avec : 2 Contrepoids d'1 kg Garantie : 5 ans Chercheur : Type point rouge Deluxe Poids total : 32,1 kg Porte-Oculaire : Crayford 2" (avec pignon), démultiplié 1/10 + adaptateur 1.25" Miroir : Matériau BK-7. 174,75 €. Explore Scientific produces a range of elegant lightweight truss tube Dobsonian reflectors with mirrors ranging in diameter from 10-inch, to a whopping 20-inch. The mirror box uses similar build principles and even with the 14kg mirror inside it, it is not too difficult to lift the whole bearing box in and out of the base when you’re setting up or breaking down the scope. You can adjust both the secondary and primary whilst looking through the focuser, which is handy. TTC. A locking screw underneath allows you to tension the focuser when using heavier eyepieces. Screws in the corner of the mirror box slide into slots in the truss hinges, which, when tightened, grip the poles in place. Partager Les tourillons peuvent être stockés dans le rocker du miroir primaire, Mouvements doux et précis grâce aux roulements de pallier en GRP et Teflon, Fixation à verrouillage rapide avec un nouveau système de ressorts pour une utilisation plus pratique, 6 pieds plus grands pour améliorer la stabilité, Poids léger - l'utilisation de l'aluminium réduit de moitié le poids par rapport à une construction en panneaux stratifiés dans cette gamme de prix, Matériau miroirs primaire et secondaire : Quartz, Marquage central du miroir primaire pour faciliter la collimation, Pouvoir de résolution : 0.28 seconde d'arc, Structure du télescope très rigide. M51 at the zenith with its companion was easy and at higher power gave hints of spiral structure. With the scope assembled and collimated we inserted a low-power, wide-field eyepiece and started exploring the skies. The problem was that the design of some of the altitude bearing components has been upgraded but the manual hasn’t been updated accordingly. This then engages with one of three socket screws around the front of the mirror. With these attached, the rest of the assembly involved fixing the truss poles to the mirror box and then attaching the head to the pole tops. Toutes les pièces sont soudées, pas de vis ou rivets, Système de mise au point : Crayford Hexafoc 2.5'' avec adaptateur 1.25'' et démultiplicateur 10:1, Mécanique du télescope fabriquée à la main en Hongrie et en Allemagne, Position du porte oculaire télescope pointé au zénith : 1.63 m, Cage primaire : 35.8 kg dont miroir : 20 kg, 5 ventilateurs pour une compensation rapide de la température. Some online picture checking was needed to work out how it all went together, particularly the attachment of the altitude bearings to the mirror box. Four screwed knobs then attach the poles to the head. The poles and the head are also aluminium, with steel only used for the secondary spider to give extra rigidity. The mirror box is an open design with plenty of space around it to help it cool down to air temperature. Annuler, (Informations données sous réserve de modifications sans préavis). Dobson Ultra Light 508 mm génération II Explore Scientific. You can do this by grabbing onto the tops of the attached aluminium altitude bearings, which double up as very convenient handles. Once we’d unbundled it, we started assembly but were soon scratching our heads. Lo and behold I started thinking some more about upgrading to … A battery pack taking D cells is provided to power the fans. Choose your book when you subscribe to BBC Sky at Night Magazine today! Taking the 1.25-inch adaptor out allows 2-inch eyepieces to be used. Télescope Dobson ultra-compact de 508 mm de diamètre (20") de conception moderne avec une structure réalisée entièrement en aluminium. Google+ A 16-inch scope is a big piece of equipment and often back-wrenchingly heavy. $ 949.99 SKU DOB1045-00 BARCODE 812257015566 ... Based on 6 reviews Write a review. The scope packs away very nicely when the poles are removed: the head sits  on the lid of the closed mirror box to form a compact unit 55x55cm and only 75cm high. Although the scope movement was smooth and easy thanks to its low-friction PTFE-on-glass-board bearings, it was perhaps a little too low-friction when it came to altitude. No issues with slack or rough spots. The 16-inch (405mm) f/4.5 mirror is made of low-expansion glass, 43mm thick, and has a laser-engraved centre ring to help you collimate the scope before use. The optics performed well once cooled down and the large, foam light baffle opposite the focuser helped keep the field dark and the contrast up. Explore Scientific - Generation II - 10-inch Truss Tube Dobsonian Telescope - DOB1045-00 by Explore Scientific. Explore Scientific - Generation II - 12-inch Truss Tube Dobsonian Telescope - DOB1245-00 by Explore Scientific.   It also helps reduce the likelihood of the optics dewing up in damp conditions. Copyright © la maison de l'Astronomie 2019 -, 33 - 35, rue de Rivoli, 75004 Paris - Ouvert du mardi au samedi de 10h15 à 18h30, Châtelet (ligne 4), Hôtel de Ville (ligne 11), Correcteurs de champ - Réducteurs de focale, Alimentations / Câbles / Batterie et piles, Accessoires pour microscopes et loupes binoculaires, Site Internet réalisé par 40 degrès sur la banquise, Télescope de type Serrurier de 508 mm entièrement en aluminium, Bulletin de contrôle du miroir primaire fourni, Collimation sans outils et stable pendant le transport, Barillet du miroir primaire avec une mécanique complètement repensée et améliorée, Support du miroir secondaire de haute précision avec mécanisme de réglage le long de l'axe optique, Construction de haute rigidité. 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