I have 2 on my platform. Si oui dans quel ordre ? You can use a stepper motor or a DC motor. the top corner of this shape is where the polar axis is located. The second drawing shows an upside down V shape. 3 years ago. Is it based on latitude of your location? One of them is powered by a DC motor. Salut Simon !! Look into the tube and adjust the head of the tripod the see the North Star into it (you can also use a laser through the tube). Documentation on the NexStar HC and Aux protocols: 1. It is called "equatorial mount", it is commonly used with a telescope because with only 1 motor it tracks stars. 5 months ago. Et merci de partager votre projet. My main hobbies are astronomy, astrophotography and 3D printing. Please, if you can help me with few practical considerations. The equatorial axis is known as right ascension, while the perpendicular axis is … J'ai modifié le code pour l'Arduino pour un usage sans led ni interrupteur, si tu peux me dire si c'est ok : *******************************/* Direct Mode Arduino -> Motor */#include CheapStepper stepper;void setup() {}void loop() {stepper.step(false);delay(3523);}*******************************Par contre sur le schéma de câblage, là je sèche un peu, j'aurais tendance à faire comme en PJ.Côté Arduino j'y connais pas grand chose, certains nanos sont avec des pattes et d'autres sans, comment acheter le bon ?J'ai fini toute la partie impression 3D, il me manque juste les roulements et le contrepoids. Feb 13, 2020 - Explore Gary Zapotoczny's board "homemade telescope mounts" on Pinterest. Je sens que j'en suis pas à ma version finale ;)[Edit] rien que quelques coups de perceuse avec différents forets ne puisse régler, cependant ça sera plus propre si je refais la pièce autrement ;) ma rotule tient très bien :-) une tige filetée M8 rentre bien dans le trou latéral que j'ai débouché à la perceuse aussi. (ON / OFF) I am also wanting to make WiFi version of Manis404's Eos controller and hopefully run it off of the same arduino for full WiFi control.Thanks for the instructable. My iOptron Skytracker is great for shorter lenses and exposures but I cannot load it up too much before it … The side with the bearings should be facing north. 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. 2. This provides access to … Reply If you are below latitude 60, you will have to raise the south side. 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. Once the speed is set, your instrument should stay aligned on the objects you're aiming at. Solder wires according to this schematic: Then plug the motor and clip the lid on the box. 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. Usually the newest (highest revision) RELEASE is recommended. 5 months ago. The gears teeth have to mate the worm. For this project I used Fusion 360 to design all the pieces. Salut Simon, comment alimentes-tu l'arduino dans ta solution ? However, with the crop factor of my DSLR it turns out to be the "300 Rule". merci d'avance ! The Arduino Mega 1280 is housed in a box on the telescope. The overall shape doesn't really matter. Is the platform (top board) level/horizontal?3. Well done! The parts are displayed on the pictures above. Computerized telescope goto control based on Arduino driven stepper motors for german equatorial mounts. More information... More ideas for you 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. They will hold your instrument in place (telescope, tripod).- 5/16" threaded rod which will serve as the polar axis.- 10 skate bearings (polar axis and circular segments rollers)- 3/4" threaded rod to serve as a worm screw- 72 teeth cog- 4 rpm DC motor- 3 hockey pucks- Screws and small pieces of wood. This design allows the attached instrument (your camera or telescope) to stay fixed on a celestial object by driving one axis at a constant speed. So, I have decided to switch to this design. Keep up the good work. Pre-drilling the holes will help. For the base, you can have the same shape but make the north side longer and extend the south side a little. Ceci est un exemple, je n'ai aucune idée de la variation du code. Called GoTo mounts. This will create a strong but smooth circular motion. Your photo showing the motor assembly: it appears that you have used a threaded tube or some thing? These are the position of my telescope feet. 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. Split ring and equatorial mount/ tracking platform for dob. I'm not sure if I should be sad or happy, BUT the two things I KNOW that I must do is to start building your wonderful design and give you my heartfelt vote. 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. First I had to design a two-axis mount. The control utilizes a calibration method and various settings which enable you to control any type of mount (not just equatorial and altazimuthal) pointed at any direction.. All available open source telescope controls either use Raspberry Pi, which consumes a lot of power, or uses Arduino as extension to a computer, smart phone or tablet. First, level the base of the platform and make the top and base parallel. Question Super boulot ! Some of them are big and really powerful in order to rotate enormous telescopes but some others are small carrying only a DSLR that is what I wanted to make. 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. But there's one more thing we need to add. Saved by Christopher Fandrich. Drafted as stand alone system, rDUINOScope does not need PC, Tablet or Cell Phone, nor Internet connection in order to operate and deliver stunning views! About 3 years ago, I decided to make one of those CNC router things to help me make a Eq. Answer I could have made a 45 degree platform with a conventional vertical segment but I would have to raise the south side so much that the telescope would be quite off balance.The vertical segments only depend on the distance from the platform axis. J'ai du plomb chez mon père, j'vais peut-être mouler un poids, faut que je pèse mon APN + objo pour dimensionner le contrepoids. But first, what is an equatorial platform? I am looking forward to my version of this. Then adjust the counterweight to balance the rotating part, and put back the small gear wheel. 21 days ago, Hi! The design of the "Polar axis": is there a reason for cutting and positioning the wood at 30 degrees? And for my star tracker I wanted as few gear wheels as possible in order to reduce play in the mechanism that is why I didn't make a planetary gear. The parts are displayed on the pictures above. rDUINOScope is the first Arduino-based, stand alone device allowing amateur astronomers to enjoy the night sky. The more precise your alignment, the longer you can keep the objects centred in the eyepiece or on the sensor of your camera. The platform will run for about 60 to 90 minutes. Monture Equatoriale motorisée legere fabrication maison pour l'astro photographie.Light DIY equatorial mount for astrophotography. Arduino Star Tracker. Like a standard equatorial mount, equatorial GoTo mounts can track the night sky by driving the right-ascension axis. In order to cancel vibrations from the ground, and to make is more stable, we'll add 3 rubber feet. Sky-Watcher EQM-35 Equatorial GoTo Mount. With this instructable you can design your own or you can use my STL files and follow the assembly tutorial. Place the platform flat on the ground and turn the pointed side (polar axis) to the south. À mon avis, pour chaque focale que vous utilisez, vous devez faire varier le code arduino, au lieu de 3,5 secondes pour 85 mm, si vous utilisez un 100 mm, vous devez réduire le temps de 3,5 à 3 secondes. An equatorial mount is much more compatible with the celestial sphere. 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. Je pense avoir trouvé le pb entre temps... des faux contacts sur mes pins... en changeant ces pins, j'ai bien l'ordre des leds, D/DC/C/CB/B/BA/A/AD qui se repete. In the mid-price range, the Sky-Watcher EQM-35 Equatorial GoTo Mount is another excellent option for beginners to intermediates. How to couple it to the 3/4" tube or rod? 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). You could whack it with a hammer and vibrations died in less than 2 seconds. By rotating the part, it can be cut on a laser cutter with a 20x32 bed (2 layers of 1/4 in plywood). Mechanics, Part 2 - Install the Wheels. Since I aquired an Losmandy G11 mount without any goto provision I decided to create my own solution. J'ai même essayé un programme simple de la librairie de CheapStepper, mais uniquement des vibrations. Arduino Control This year I have added my homemade Arduino GOTO telescope control system and got rid of the hopeless Meade system. The hardest bit at the moment is the DSLR controller part. Here's a list of material: - 1/2 inch birch plywood for the base, the top and the curved segments. I see an Allen screw in that rod. The scale is 1:1. Same amount no matter where you are? 25 days ago, How the manfrotto is attached to the tripod, Thanks a lot for the tracker! You mention "below 60 degrees raise the south side and above 60 raise north side (2 pucks)". Diy Telescope Radio Astronomy Space And Astronomy Arduino Projects Electronics Projects Diy Projects Barn Door Tracker Astronomical Telescope Guns And Ammo. NexStar AUX Protocol Building an Equatorial Mount. So this must be a specific cog that you used? the member videoenquirer modified the previous code for the southern hemisphere : Once printed, screw in place the two PCB (Arduino + ULN2003 driver) and place the components in the box. I will use the stepper motor, but this time, driven by an Arduino board and stellarium. Merci en tout cas ! I used a 3/4" threaded rod to make the screw. Or did you drill a hole in the rod? 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. 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 Will that work? You can use the SVG file attached. This device will let you observe an object for several minutes or take photos of the night sky without having to worry about star trails. Un test pour l'instant. You can now slide the polar axis inside. What does my Arduino … To do this, screw the threaded rod into a piece of wood and cut the other end of the wood at 30 degrees. Since I am living in the north, Polaris sits quite high in the sky. The condensator has 100nF. You can then cut this support in a piece of wood and cut the bottom side at a 30 degrees angle. 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). (et l'alim aussi? 2019’s Arduino Education thematic year: robots, satellites, radio communication systems, weather monitoring devices, maps, and more related to Space technology Indeed, the vertical segments will reach their end after a while. We will add it now. Screw the DSLR on the ball joint, and add the counterweights on the other side. It can also be useful to make timelapse according to earth's rotation. A bit like this: https://www.instructables.com/id/Star-Track-Arduino-Powered-Star-Pointer-and-Tracke/I hope it help a bit. I used a direct drive versus a screw lead type. I used two Arduino's in this project(due to the lack of digital pins).One to control the … The RELEASE BRANCHESare well tested and what most should use. 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). Merci ;)Hmm c'est étrange ton problème... Si tu as essayé différents câblages, différents moteurs, différents drivers et même différents codes je ne vois pas vraiment d'où ça peut provenir, lorsque tu mets mon programme les led du driver s'allument-elles ? and now that I've built a machine that's big enough to actually cut this, here you supply wonderfully simplistic build than I was envisioning. You can see that even at 196s exposure, stars stays dots (except in the corners due to chromatic aberations) however there is a motion blur on the trees. THERE ARE SEVERAL GITHUB BRANCHES OF ONSTEP: 1. Je n'ai pas l'impression. (90 - 60 = 30). As you will know if you own a German equatorial mount then the declination axis … Very nice, I'm moving to a place where I should be able to see more sky at night. I 3D printed all the parts on my Creality Ender 3 with those settings: the total printing duration is roughly 12h. Love the design but how did you calculate the shape of the sectors? I enclose the circuit and firmware.Best wishes, Denis.#include CheapStepper stepper;void setup() { pinMode(A1, INPUT); pinMode(A2, INPUT);}void main() { while (digitalRead(A1) == LOW) { stepper.step(false); delay(6); } while (digitalRead(A2) == LOW) { stepper.step(true); delay(6); } stepper.step(false); delay(3523);}. Yes, I am using a 3/4" threaded rod but a bolt will work the same way. The reticle illumination is provided by three red LED directly inserted into the mount. However, living above 60 degrees latitude, I needed to design my own platform. You can now place the top part of the platform onto its base. 5 months ago. You will need to adjust the speed of your motor while keeping your eye in the eyepiece. Hi,It depends what you are trying to achieve. Reste à sourcer le tube creux, les roulements et l'électronique ;), Ah oui les supports c'est toujours une galère mais pour ce model ils sont optionnels ! As you know, Earth is rotating, so it is not easy to photograph stars because they leave star-trails. I designed all the parts using Fusion 360. on the 2nd picture, pieces with a "*" are not 3D printed. 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. - 5/16" threaded rod which will serve as the polar axis. We will now install the vertical segments onto the top part of the platform. I have seen a lot of fine instruments produced by our members and thought I might want to try my hand at a couple of projects. Did you make this project? Arduino can actually turn off the power to the telescope mount itself - handy when you detect an problem. You can now observe and take photos of galaxies, nebulae and planets at high magnification. I am in the process of designing and building an equatorial mount for tracking and guiding of a DSLR camera + lens and/or a small telescope (perhaps up to an 8" SCT optical tube). Now measure the distance needed for the support of the polar axis. But I don't think they thread it more than just an inch or so at the end. 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). The motor is a 28BYJ-48 stepper motor. This fact lead me to a triangular design with a polar axis in the south and 2 curved sections toward the north. Great Idea! Instead of buying the 3 foot rod, pretty expensive, I am planning to just use a section of 3/4" bolt. Unless you hav a fork mount, in which case forget it. You can now take long exposure images of your favourite constellations, nebulae and galaxies. Motors usually have only about 5mm shaft. If 3D print, can you please provide the STL file. Building an equatorial mount with autoguiding for astrophotography - posted in ATM, Optics and DIY Forum: I am in the process of designing and building an equatorial mount for tracking and guiding of a DSLR camera + lens and/or a small telescope (perhaps up to an 8 SCT optical tube). An equatorial mount has one rotational axis parallel to the Earth’s axis of rotation. You mount your camera on the “door,” then aim the hinge straight at the North Star, Polaris. First, 1rev/23h56min4s is slow, very slow. Et le moteur semble bien tourner ! Reply I made it with some changes to make the code more reliable. Power on the equatorial mount and enjoy . It was the best one that I could find for a star tracker. I chose a DC motor because I already had one and I could adjust the speed easily by simply changing the voltage with a variable resistor. A summary about the DIY german equatorial telescope mount I have made and used for astrophotography in my observatory. It is fairly easy to use as long as you can see Polaris. 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. You can buy fancy motorized “equatorial mounts” for telescopes and cameras, but it’s way cheaper and more satisfying to build your own simple “barn door” tracking mount using a long bolt or threaded rod as a drive screw. 24 days ago Your design is so much easier than most others. The world's first standalone Arduino-based telescope control Goto. The 30 degree angle is because I live a latitude 60. Merci de ta réponse. Mais le moteur ne fait que vibrer, il ne tourne pas. They should both be horizontal. It doesn't have to be too precise. 400. He also has a PDF with all the dimensions that you can use to build your own if you don't feel like doing the maths. 4 years ago. To begin with, we'll cut the top and base of the platform in a triangular shape. My platform lets me take up to 15 seconds exposure with a 1000 mm focal length. The drawings above shows 3 circles on the top of the platform. Since laser pointers are a perfect way to point stars, I thought a laser pointer with a GoTo mount would be a perfect tool for locating stars and to track them. Description. Drill a hole all the way through. The fact that platform will no longer be level does not matter?Thank you for your help. Question This project aims an automatic control for telescopes, is based on Arduino and is low-cost!. Install the altitude wheel directly to the telescope, using the … I suppose I could use the standard plumbing 3/4" pipe. My main reason for doing this project was to have a mount that tracks and does not have to be manually moved to follow an object. Mais bon on ne règle pas l'angle tous les jours et à concevoir et modéliser c'est une autre paire de manches. Thomas, thank you very much. We can start by assembling the polar axis. Click here to see the project. With that we can create a device that turns on a parallel axis and at the exact opposite speed as the Earth. ... Main homemade German equatorial GEM telescope mount project Category page Homemade GEM telescope mount slew video Picking up the telescope mount project Mount slewing video take 2 As an output the rDUINO Scope controls 2 stepper motors representing RA and DEC movement of a German Equatorial Mount (GEM). So for 50 degree as well as 30 degrees, all you do is raise the south side by a fixed height. The stars probably won't stay centred on your first try. Is the height of front polar axis (the space between upper and lower board) same as the height of the back (vertical segments)? This is optional but it helps to secure your instrument in place. This is enough for common deep sky objects since you can stack multiple photos to get the same result as a single longer exposure. Most of the things I build usually relate to either astronomy, physics or woodworking in general. Your platform is almost complete. I thought the curve of the vertical segment is cut to the specific latitude and the device will be accurate only in that latitude. The DSLR stays motionless during exactly 3.523s so according to the 500 and 300 Rule : the equatorial mount will work with lens below 142mm focal length on a full frame and below 85mm on a crop sensor. Et je ne sais pas trop comment chasser le support à l'intérieur du trou qui sert à faire passer la vis qui verrouille le support sur l'axe de rotation ':-). 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. This video shows how to build a dslr star tracker allowing to rotate the camera in sync with earth rotation, i.e.one full turn in 24 hours. Je rencontre toutefois un problème avec le moteur, et j'espère que vous allez pouvoir m'aider! Around the threaded rod is a tube (plastic or metal) covered by a rubbery material. The base of the platform is similar to the top but extends further toward the north to accommodate bearings and a motor. 1 year ago. Y'a-t'il une raison particulière de le faire en 2 parties ? Place the star tracker on the tripod (tube pointing to the north). The DSLR stays motionless during exactly 3.523s so according to the 500 and 300 Rule : the equatorial mount will work with lens below 142mm focal length on a full frame and below 85mm on a crop sensor. 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. on the picture we can easely notice some deep sky objects: I also practice astrophotography with a telescope, you can see my photos on Instagram ;). - 1/4 inch plywood for the circles (optional). I did not find any on line.The 72 teeth cog: source? Tools & Parts. OnStep. My wife and I spent a good portion of this time driving around the beautiful American Southwest and … 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). As I live in the north hemisphere at roughly 45° latitude I tilted the Manfrotto socket by 45° the adjustments will be ensured by the tripod head. In the AR axis will be inserted Vixen polar scope (2573), the same used in Sphinx mount. About: I'm a French mechanical student, I like to design, make things and share them here. Just drill a hole on each end. These bearing will allow your platform to move smoothly. You will notice that the threaded rod for the polar axis has no support yet. You can now start the motor and look through the eyepiece or camera. As a big fan of astrophotography and 3D printing I had to build my own equatorial mount for my DSLR. Si je fais une v2 je rendrai cette partie monobloc je pense. They will hold your instrument in place (telescope, tripod). Platform. rDUINO Scope is based on Arduino Due board and utilizes the code and few sensors in order to collect needed data to control the telescope mount. Bonjour,Merci pour ce super design, déjà tout imprimé et en train d'assembler le tout. Share it with us! I am aiming to be able to control the stepper motor over WiFi with an esp8266. 3/4" threaded rod you used as the worm: I assume it is 10 threads per inch? The powered one has the bearings mounted into its support (thick plywood). ).À quoi sert la vitesse "rapide" ?J'ai fait un remix sur Thingiverse afin d'adapter la base à mon trépied photo ;)Merci d'avoir partagé ta réalisation.Hâte de voir la V2, Reply J'en au utilisé vraiment aucun ;) les trous parallèles au plateau s'impriment bien en général, Je me demande si je vais pas prendre ça tout simplement pour alimenter l'arduino : https://www.amazon.fr/DSD-TECH-batterie-emplacements-int%C3%A9gr%C3%A9s/dp/B07CM4N56Z/ref=sr_1_6?&crid=2SG86CQ852RG5 y'a même l'interrupteur on-off. Its very easy to use and most suitable for Refractor Telescopes up to 100mm in Aperture. This mount then morphed into the tracking table shown, which is a viable alternative for an Alt/Az mount albeit the short run times of the sector. On that rod, we'll put a system of worm and gear. The vertical segments should be on their bearings. This would work for an Arduino based solution, as well as passing commands to a properly aligned telescope via hand controller. For the moment i could just control the DSLR with something like this.Thanks Again.

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