As an output the rDUINO Scope controls 2 stepper motors representing RA and DEC movement of a German Equatorial Mount (GEM). On that rod, we'll put a system of worm and gear. J'en discutais avec un oncle qui fait de l'astro (qui veut s'acheter la StarAdventurer depuis des années) et il me proposait d'ajouter des éléments pour aider au réglage comme un vernier ou un marquage des axes. I thought the curve of the vertical segment is cut to the specific latitude and the device will be accurate only in that latitude. Mais bon on ne règle pas l'angle tous les jours et à concevoir et modéliser c'est une autre paire de manches. 5 months ago. Platform. on Introduction, Hi Simon,Can you post some simple instruction how to adjust rotation speed because of gear ratio changes? The Arduino Mega 1280 is housed in a box on the telescope. Monture Equatoriale motorisée legere fabrication maison pour l'astro photographie.Light DIY equatorial mount for astrophotography. This is a USB controller for Celestron NexStar AUX protocol implemented in Arduino.It substitutes the hand controller, receiving the commands from the PC (HC procotol)and communicating with the mount (AUX protocol). 6 months ago, Salut !Je vais répondre dans l'ordre :)- j'alimente la monture avec une batterie portable que j'ai fabriqué pour l'astro (à base d'une batterie au plomb 12V/24Ah (oui c'est lourd...) et cette batterie portable possède une sortie 6V que je relie donc à la prise jack de la monture (j'utilise 6V mais avec 12V aussi ça aurait marché, il faut se référer à la doc de la carte Arduino)-oui le boîtier pend à côté mais étant très léger cela ne perturbe pas la montureEt l'alim est posée par terre (c'est donc la grosse batterie)-la vitesse rapide sert pas à grand chose c'est plutôt une fonctionnalité pratique : elle me sert à visualiser le mouvement de la monture au fil de la nuit (pour vérifier qu'un arbre ne passe pas dans le champ par exemple) elle peut aussi servir à cadrer et elle me sert également à montrer comment la monture tourne lorsqu'on me demande (en mode démonstration quoi)J'ai vu ton remix ! - 1/4 inch plywood for the circles (optional). Those pictures make it worth it :-). So, I have decided to switch to this design. Just drill a hole on each end. Would the angle be different for a different location?2. merci d'avance ! Click here to see the project. However, living above 60 degrees latitude, I needed to design my own platform. You can then glue it under the top part of the platform, making sure that the axis of the rod goes through the polar axis (top corner of the triangle in the diagram). Reply Solder wires according to this schematic: Then plug the motor and clip the lid on the box. First I had to design a two-axis mount. Je rencontre toutefois un problème avec le moteur, et j'espère que vous allez pouvoir m'aider! Mechanics, Part 2 - Install the Wheels. No new features are added and only bug fixes where necessary and safe. The powered one has the bearings mounted into its support (thick plywood). The side with the bearings should be facing north. Please note that this design is one out of many. Computerized telescope goto control based on Arduino driven stepper motors for german equatorial mounts. Since I aquired an Losmandy G11 mount without any goto provision I decided to create my own solution. My iOptron Skytracker is great for shorter lenses and exposures but I cannot load it up too much before it … The drawings above shows 3 circles on the top of the platform. THERE ARE SEVERAL GITHUB BRANCHES OF ONSTEP: 1. OnStep. In astrophotography, we use the "500 Rule" it allows to take pictures of the night sky without noticeable star trails: divide 500 by the focal length of your lens and you will obtain the maximum exposure time. First, level the base of the platform and make the top and base parallel. You can now take long exposure images of your favourite constellations, nebulae and galaxies. My lens is a Canon 24mm f2.8 so according to the rule: 300/24=12.5 I can only shoot stars during 12.5s and that is very short to capture enough light from them. Je n'avais pas fait cette pièce car j'ai trouvé que la tête du trépied remplissait déjà bien cette fonction, cependant si j'ai bien compris tu enlèves la tête de ton trepied pour la mettre au dessus (sur la pièce support) c'est une bonne idée ça évite d'acheter une rotule en plus :)Merci pour ton retourEn attendant la V2 ça attendra un peu ... J'ai imprimé une version mais elle ne marche pas si bien que ça alors j'ai laissé le projet de côté pour le moment :(Hâte de voir ta réalisation avec ta pièce remixée :). I 3D printed all the parts on my Creality Ender 3 with those settings: the total printing duration is roughly 12h. How long a segment is needed as a worm gear? Thomas, thank you very much. Feb 13, 2020 - Explore Gary Zapotoczny's board "homemade telescope mounts" on Pinterest. www.stellarjourney.com. NexStar HC Protocol 2. Here's a list of material: - 1/2 inch birch plywood for the base, the top and the curved segments.- 1/4 inch plywood for the circles (optional). If you want close-ups of the ISS for example, you'll need a telescope, a robust mount and a fairly high slew speed.Another thing to note is that satellites are not following the ecliptic, (except the geosynchronous ones of course), so you don't really need an equatorial platform for this task.I would go with an Alt-azimuthal mount (can be handmade) with high speed stepper motors.Then you'll need to use an arduino or raspberry pi or a computer to control the mount. Ceci est un exemple, je n'ai aucune idée de la variation du code. Question Unless you hav a fork mount, in which case forget it. This provides access to … rDUINOScope is the first Arduino-based, stand alone device allowing amateur astronomers to enjoy the night sky. De toute façon, Colorful Rope Macrame Knot Necklace With Tassel, https://www.amazon.fr/DSD-TECH-batterie-emplacements-int%C3%A9gr%C3%A9s/dp/B07CM4N56Z/ref=sr_1_6?&crid=2SG86CQ852RG5, 1x Arduino (I used nano but every arduino will work), 2x push button (I used a double momentary toggle switch), 1x metal tube 105~110 mm long with external diameter according to the bearing (here 10 mm), 1x Tripod (mine is a Manfrotto Compact Advanced), CAD software if you want to modify the files (fusion 360 is free for students), Screw the motor in place with 2x M2.5 screws + nuts, Hammer the bearing on the tube, 20mm from the end, Place those in the corresponding hole of the main body (red piece), Place a washer or anything that can be a spacer here, Insert 4x M2.5 nuts where it is needed (here is the example on the big gear wheel), Screw the big wheel and the support on the tube, tight them enough to make a mark on the tube, Remove those 2 pieces and drill 2 holes at the marks, Screw the big wheel and the support on the tube, Insert the M8 nut into the support piece, Screw a camera ball joint with a Kodak screw, Add counterweight on the threaded rod to balance the mass of the DSLR. For the base, you can have the same shape but make the north side longer and extend the south side a little. Salut Simon !! Merci en tout cas ! Place the board upside down (polar axis up) and screw the segments into the sides of the board making sure the boards make a right angle. Usually the newest (highest revision) RELEASE is recommended. Instead of buying the 3 foot rod, pretty expensive, I am planning to just use a section of 3/4" bolt. I have 2 on my platform. In order to drive the motor with 4076 steps, there is this Arduino library by tyhenry. Here is the Cults3D link to the files: HERE (.stl and .f3d), 1rev/23.934444h on the main shaft --> 1rev/3.989074h on the motor shaft, 4076steps/rev on the motor --> 1 step every 3.523s [3.523225s]. The platform will run for about 60 to 90 minutes. Building a barn door mount, part 1: arduino stepper motor control 19 Replies Serious astronomical imaging requires an equatorial mount for the camera / telescope, which tracks the rotation of the earth for anywhere between 5 minutes and several hours. Fortunately the rotation of the Earth is well known, the axis is passing through the north celestial pole and the rotation speed is 1rev/23h56min4s (stellar day). But first, what is an equatorial platform? One is for the motor which gets attached with a small allen key, the other hole is for a pin to keep the worm gear centred.The gear is from here: https://www.sdp-si.com/products/Gears/Spur-Gears-72-Pitch.php They also have worm gears if you don't want to make your own.I'll check at home where the rest of the design is. If you want to learn how to create your own or if you want to modify it, I invite you to take a look at Reiner Vogel's page and his detailed instructions. (90 - 60 = 30). 4 years ago. I'm actually looking into ways to photograph satellites (the artificial kind) but I think I'd need a platform more aggressive than this. Remove the small gear wheel from the motor to release the axis. Diy Telescope Radio Astronomy Space And Astronomy Arduino Projects Electronics Projects Diy Projects Barn Door Tracker Astronomical Telescope Guns And Ammo. Arduino can actually turn off the power to the telescope mount itself - handy when you detect an problem. I used two Arduino's in this project(due to the lack of digital pins).One to control the … yes of course1rev/23.934444h on main axis6.25gear ratio (100/16)-> 1rev/3.8295h on motor axis4076 steps per revolution0.0009395h/step=3.382s/step=3382ms/stepSo just replace the delay value from the program by 3383 (instead of 3523):), Question Avec la densité du plomb ça devrait permettre d'en mettre peu et proche du centre de rotation, la tige M8 est relativement souple quand même...Merci. The main shaft is made from a copper tube the material is not very important but it must be a tube, you will understand why later. It has a diameter of 10mm because I had some 10-30-9 bearings (those may be oversized but it results in a very reliable revolute joint), I used a 5VDC 28BYJ-48 stepper motor, which is not very powerful but with the gear ratio it should be enough. Your platform is almost complete. since you will be using wireless communication to control the tracker, you could consider incorporating a sensor with a gyroscope and compass, to have direction and head tilt information, a sensor that could be used would be the gy-80. I used a 3/4" threaded rod to make the screw. It can also be useful to make timelapse according to earth's rotation. It can also be cut by hand but make sure to keep the original size (21" tall for the top board without the vertical segments attached). Merci de ta réponse. You can then cut this support in a piece of wood and cut the bottom side at a 30 degrees angle. Thank you Larry, I wish you good luck with the build and don't hesitate to post comments or send me a message if you have any questions. Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right-ascension axis. You just need to make sure you keep the position of the polar axis (see diagram) and the length, position and inclination of the 2 straight sides. If tube, source please? The stars probably won't stay centred on your first try. 400. Description. This project uses a Feather M4 and Trinamic's TMC-2226 stepper motor driver to enable you to take long exposures of the night sky with just about any camera. Some may have 40 or 20, hence the different vertical segments for each platform. What does my Arduino … I'd still like to build it myself, do you have any advice? As a big fan of astrophotography and 3D printing I had to build my own equatorial mount for my DSLR.

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