My homemade GoTo
ฝัง
- เผยแพร่เมื่อ 21 ส.ค. 2024
- This video presents the GoTo system, which is completely made by me with support of my friend and some guys from Polish and British astronomy forums.
The system is based on amended Dobson's mount supplied by also homemade drives with stepper motors. Inside the black box on bottom of the mount is the Raspberry Pi microcomputer including software written by me. There is also database of object based on so called "Wimmer's Table" - list of object easy to reach for beginners using even small telescopes.
The project is open, so I expect developing it towards planets of our Solar System, comets and artificial satellites of the Earth - I hope so.
I have to make some improvements, especially solve the problem of strange noise made by steper motors during their faster work.
I hope you like mu GoTo system and its accuracy.
See you soon.
Amateur astronomers are some of the best backyard engineers I know. Thank you for sharing. Greetings from Southern California.
Nice work, ignore the haters who have likely achieved nothing in their miserable lives.
I simply don't care. ;)
Very top, congratulations.
This is amazing, I wish I could do this too!
amazing work! I'd love to be able to do it, but I ain't got the brains for it, well done man!
Thank you. But it's not my best project, watch please my most recent video called OpusMagnum.
Rewelacja! Kawał niezej roboty :) Moja ulubiona część: analogowe dźwięki :)
Very awesome, I just got a 6 inch Ad6 dobsonian the factory rocker box is 25 pounds iam going to build a new one
Brilliant work. Congratulations.
Thank you Tomasz for sharing.
Thanx for the info, gave me some great ideas!
Great work. Since Newtonian Telescopes are so cheap now, I am going to try to take a Dobson and put drivers & sensors on it tied to a microcomputer. Did that in my days as a graduate student using C++ equatorial telescopes in outreach on Kitt peak NOAO.
Hi. Now I would do it in a different way. Look please at my last video and consider the OnStep. In opposition to the AstroEQ, the OnStep allows to motorize the Alt-Az mounts. It works well with the Astroberry/StellarMate and KStars+Ekos.
You deserve a better sky dude! great job
Thanks. :)
Wielki szacunek Tomku :).
I to jest właśnie motywacja do dalszych działań. :)
Very impressive!
Po paru lat, po tym jak skonstruowałem własny teleskop, zabieram się za podobny projekt. W tej chwili mam już mechanikę i powoli zabieram się za podpięcie elektroniki i napisanie programu pod to.
Super! Polecam. Ale proszę wziąć pod uwagę gotowy system, jakim jest OnStep. W przeciwieństwie do AstroEQ, OnStep działa również z montażami Alt-Az. Zdecydowanie nie polecam pisania programu, bo to zmarnowany czas (i praktycznie brak kompatybilności). Mądrzy ludzie zrobili to już za nas. Niestety, doświadczenie to taka wiedza, którą się zdobywa zaraz potem, jak się jej potrzebuje...
awesome project i bet if you stack loads of your pictures you wil get crazy cool results greetings from a fellow sky gazer whos currently building his own digital telescope from the start mine is fully pi based with a pi 4 and the pi hd cam running astroberry on the pi board so i basically have got a 24 cm mirror reflector telescope on the way to opensource greatness i wanted to thank you to pointing me to the so called " wimmers table " gonna integrate that into my project in all a great video you made of your project
Thanks! :) Look then at my last video... ;)
@@astrovroobel i definitly will 😃
Brilliant.
I am also interested in tracking and possibly replicating this project.
Hi Tomasz,
I liked your DIY solution for the go-to system on your telescope a lot. Congratulations! I am a radio astronomer and planning to make a small radio telescope as being a prototype for a bigger one in future. I also want to make a goto system for it. I would be grateful to utilize your experiences. If it's possible, I also would like to check your codes. I believe that your files would help me a lot. Thanks in advance and I believe you will develop it so much better :)
Hi,
Thank you for the comment. No problem, I can share my achievements with you, including some tricks, just send email to an address shown in the end of most recent videos.
Tomasz
Radio Astronomy seems cool, im planning to try that for a year or two, but i didn't take the time yet.
Thats Crazy Madd Skills You and Your Friends Have There,Backyard Astronomer,and Astrophotography Myself...Beginner Level On The Photography,lol..Just Got The Nexstar 8se For Christmas,and Had The Eq Wedge For The 6se..Works For Both,Little By Little Saving For a Nice German EQ Mount,I Belong To The Amateur Pittsburgh Astronomer Association,We Have a Lot Of Fun When Doing Star Parties At The Observatory..Cant Wait For All This Madness To Be Over..Great Set Up..Im A Fan..Subscribed🙏🏻❤️🙏🏻🔭🛰🌏🌓✨Stay Safe,and God Bless🙏🏻❤️🙏🏻
Thank you :D
This is amazing
Excellent! I'm jealous!
Mistrzostwo świata! Brawo!
Dziękuję. :)
Beautiful Work!! I will try to follow your ways to do a goto system! Thanks!
Nice to read that you like my work. But please be aware that I met trouble right now unable to pass through. I can not perform pictures with exposure longer then 10 seconds and I don't know where is its source. I decided to build big EQ fork mount and will not develop the Dobsonian mount. The problem appears with astrophotography, otherwise it works perfectly!
@@astrovroobel I am new this astrophotography. I read that only in equatorial mounts u can track stars. Mounts I will work on equatorial not in dobsonion. I will follow your steps for goto arrangements. It's very good info. Thanks a lot.
@@astrovroobel I like your objective of the video!😊
Not so good
I've been thinking about building a mount for a tracking application and one thing that occurred to me is that I could use one of those simple dog tie-out stakes that you screw into the soil to anchor the center of the mount. If you adapted it to the mount with some type of boss or lever or screw plate you could even use it to provide probably 100kg or more of preload onto the mount legs to really stiffen everything up. This would help keep the mount steady as the scope slews around and when people walk nearby.
Thank you for that idea. Presently I work on completely new EQ fork mount, so I won't longer develop this Dob mount.
Amazing project, congratulations!!!!!. I made a similar project for a equatorial mount but in C++.
I use Stellarium for searching objects.
I noticed the sound of your stepper motors. Is the same sound of my motors. One doubt resolved. Thank you.
No problem. Thanks as well :)
@@astrovroobel One question. Which is the driver you use for the steppers? I use a4988 conected to a nema17 motor.
I have heard that "Vref" could be a little higher to avoid the "clac" noise of the motor when is searching
After playing with different cheap drivers I decided to go into LV8729, they are fantastic! You can try also TMCxxxx series, but I didn't do it, so can not advise.
@@astrovroobel I have not experimented with driven telescope mounts yet, but I have experience with stepper drivers in 3D printers. I replaced the A4988 based drivers in mine with TMC2130 drivers and the stepper noise went from "moderately loud" to "nearly silent" when using the StealthChop mode. Definitely consider using the Trinamics drivers if the stepper noise is annoying to you; you might also find you get slightly smoother motor drive (meaning less vibration conveyed into the scope) since the StealthChop mode effectively drives the steppers with a more ideal sinusoidal waveform.
Hej. Dzięki wielkie za ten film! Jest dla mnie inspiracją do podobnej zabawy z moim 16 calowym dobsonem Explore Scientific. Nie będzie łatwo, zwłaszcza, że mam blade pojęcie o późniejszym programowaniu tych silników, ale małymi kroczkami może coś uda się w tym temacie podziałać... Pozdro z Belgii. ;)
Hej. Radzę zwolnić i ostudzić zapał. Nie udało mi się wyeliminować losowych ruchów w mikroskali. W wizualu jest po prostu bajka, GoTo jest naprawdę fajne, ale długoczasowąa astrofotografia ujawnia mikroruchy dające w efekcie naświetlenia "robaczki" i "motylki" zamiast punktowych gelwiazd. Obecnie pracuje nad dużym montażem widłowym w oparciu o super precyzyjną przekładnię falową. Daje sobie jeszcze rok...
good afternoon, do yo have some place where I could be the elements and program code to include this system in my telescope?
thank for all
Hi. No, as there is nothing to be proud of. In comparison to the Astroberry/Stallarmate with KStars+Ekos and i.e. AstroEQ or OnStep my program was a waste of time. Look please at my last video.
Congratulation. Great job.
Would you consider making a bathinov mask for my telescope, i have a !6" goto skywatcher dob that i cant find anywhere that sells them that large, love your leveling platform takes me forever with shims and wood blocks to get my base leveled most nights
There is a site (can't remember the name right now) where you can input the measures of your telescope and it will give you a template for the bathinov mask you need, then you can have it laser cut on some black plastic or do as I did with a cardboard frame and for the mask itself I used some opaque curtain material
I'm sorry, it's easier to buy it there:
www.rothervalleyoptics.co.uk/bahtinov-masks.html
Really impressive! How far do you think you are from being able to use this tracking for astro-photography?
:D To be honest, I just finished my own field derotator, so I am able, but I have to little bit improve tracking of the drives. The general test using laser pointed on star is not enough for astro-photography. I've took some pictures and they are good, but I'm not satisfied. I always strive for perfection. Be patient...:)
Thanks for your comment. ;)
LOL BRO I HAVE THE SAME TELESCOP
I have the same telescope and thought about making a goto for it
Since I found this video do you have any advice or maybe even a parts list assembly plan you could link here?
Or are the other 3 videos you made all i need?
And because the video is a bit older, what would you do different if you had to build it again?
Thank you. :) But watch please watch my most recent video - this is what I should mke different...
excellent. I was wondering the other day [if budget wasn't an issue] how hard would it be to make an astronomy 'gyro chair' with integrated dobsonian telescope. With hand controls on armrests like those motorised wheelchairs to control aim. Anyone ever heard of something like that?
Even more, I have seen YT video about giant bino Newton (two OTAs like bino) on the mount with chair, everything motorised. Amazing project!
Can you post a link to your program?
Hi. No, I cannot as there is nothing to be proud of. In comparison to the Astroberry/Stallarmate with KStars+Ekos and i.e. AstroEQ or OnStep my program was a waste of time. Look please at my last video.
Hi, did you build the leveling platform yourself or did you purchase it? If you purchased it, can you provide the website that sells it?
Hi, that is made on my own. As I am preparing to a build of a fork mount I can consider a sale of the platform with handle and leveling legs.
Please, send me an email in relation to that. My address is in the end of videos.
Is your software on github?
No.
Cześć, dane położenie planet pobierasz z jakiegoś api/stellarium?
Hej. Sorki za późną odpowiedż. Do Pythona jest biblioteka PyEphem (rhodesmill.org/pyephem/), z niej korzystałem. Ale teraz robi to za mnie Asatroberry, KStars+Ekos i OnStep.
Hej, mam pytanko :D dlaczego ustawianie teleskopu (albo przynajmniej mi się wydaje że właśnie to to) trwa tak długo, że wymaga przyspieszenia filmu? Chodzi konkretnie o ten moment, w którym silnik brzmi jak syrena alarmowa XD stawiam swoje pierwsze kroki w astroobserwacjach dopiero, więc przeprzaszam za brak wiedzy w tym temacie :D
Przepraszam, umknął mi ten post.
Silniki krokowe pracują w trybie pełnych kroków i mikrokroków. Kroki pełne są najzwyczajniej zbyt głośne, kiedy w grę wchodzą takie rezonujące elementy jak pusta tuba Newtona. Dlatego trzeba iść na kompromis i ustalić jakis tryb mikrokroków. Im więcej mikrokroków natomiast, tym wolniej, ale za to ciszej. Nie bardzo chciało mi się czekać kilka minut na zmianę pozycji i zostałem przy około 100 sekundach na 180 stopni, czyli dokładnie przeciwny punkt na horyzoncie. Tymczasem najgłośniejszy jest napęd w osi Alt, ponieważ Az napędza montaż Dobsona, który jest wykonany z płyty wiórowej, a Alt przenosi swe drgania praktycznie wprost na OTA, co z kolei dźwięczy jak dzwon. Mam nadzieję, że o to chodziło w pytaniu.
Pozdrawiam
That makes my Meade sound silent 🥴
Lol.
:D
hmmm hot seen Flat Eric for a while
That's right! :D
Existe representante no Brasil que venda esse telescópio GoTo?
No, it's home made. :)
Hi, I have the same telescope and I was thinking about creating a goto system for it. Your solution seems to be pretty reliable. Can I ask if there is github repository or some other place where can I download your code.
Hi Martin! Thank you for your opinion. I can send my file to you directly, no problem. There is my email address in end of the video, send message to me. The code is not perfect, so you can not find elsewhere, so sorry. :)
@@astrovroobel Hi, Do you use the VSOP theory in your code in order to find and follow the planets using your Goto system ? If your project is finished then it is maybe too late for the tip, but i recommend you to get "Astronomical Algorithms" from Jean Meeus.
@@ggldmrd5583 My answer is not short :) Yes, I use some equation from the fantastic "Astronomical Algorithms" book - some basic and some more complicated, like transformation of Ra and Dec to Az and Alt. I was also using his data tables to calculate current position of Sun and Moon. But I got some advise and presently use very good Python module: PyEphem, which gives me positions of Sun, Moon, all planets and also comets and satellites. It's very impressive. Finally I still use equations given by Jean Meeus for calculation of position of objects having static Ra and Dec, everytning else is maintained by PyEphem.
@@astrovroobel Yh I tried PyEphem long ago, this is a good python module, but i personally prefere to make my own functions because it's more fun and i exactly know how it works. It allows me to modify the equations to improve some functions. The demonstrations of the formulae are very interressting btw.
I have hard hard time watching projects where people don't talk. I think this looks great. you have done some amazing work, but regrettably I just cant sit through the whole thing. Still giving the video a thumbs up.
I'm sorry, that won't change yet. My speaking English is not enough fluent. Thanks that you like my work :)
@@astrovroobel I get that, I tried to do a Spanish video once. Lol it was BAD so I know what you mean. Like I said though the quality of your work was excellent! Great job.
Thank you again :)
what steppers are you using they sound really loud . loud most of the time equals bad. seems very jerky as well . it could be alot smoother than this
Simply: basic ones. Don't worry, next steppers will be higher quality. I mean steppers for next mount that I begin to build: a big fork mount with wedge equipped with a harmonic drive.
@@astrovroobel It may not so much be the stepper motors themselves but the motor drivers. Are you using simple "full-step" drivers? If so, you may want to consider drivers that support microstepping like Trinamic or STM's STSpin.
Presently there are LV8729 drivers in micro steps mode.
Круто що самі все робите і пишете код))
How much is cost?
I never tried to calculate the total cost. I'm not sure if I want to know... 😁
"Imma post a video of my incredible invention but without any link to how to build it"
If you go to his list of videos there is an 18 minute video on how he motorized it. He also has a second video, "the reconstruction" where he updates the design to use worm gears for smoother movement.
Thanks. ;)
who flushed the toilet how inconsiderate of them
XD
Talk, say something, are you deafmute???? Communicate, don't be afraid.
He may not be speaking english.
Lol, just after writing this comment, I've realized that the video is from UK... Guess he is just shy.
@@z1k1c1321 Pretty sure he's Polish.
😁 That's it!
Can't these folks talk
No.
Dude, do you want to hear them ...speaking Polish? Would that help you?