Rough grinding of telescope mirror | large reflector telescope making | Step-2| telescope mirror

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AstroVillager

AstroVillager

2 жыл бұрын

Rough grinding of telescope mirror | large reflector telescope making | Step-2| telescope mirror
#telescope#reflector#mirror#roughgrinding#mirror grinding# how to make telescope mirror
In this vedio i tried to show how to make telescope mirror,and you can learn rough grinding of telescope mirror

Пікірлер: 41
@arjuncycling275
@arjuncycling275 5 ай бұрын
Your dedication is great 👍
@mastitadka
@mastitadka Жыл бұрын
Keep it up bro i ged ad before washing your video
@AutomationBuddies
@AutomationBuddies Жыл бұрын
I have recently done with rough grinding of a 8 inch f/6 mirror one suggestion from me is do it random don't put mark on mirror to measure the degree rotate mirror randomly otherwise it will leave marks on the mirror. I followed these steps and got the perfect spherical surface. If you overshoot the focal length then use TOT(tool on top) if will increase the radius of curvature.
@astrovillager
@astrovillager Жыл бұрын
Thank you
@user-ri5nj4sz5m
@user-ri5nj4sz5m Жыл бұрын
Привет дружище я точил увеличительное стекло одно стекло лижит а верхним серединой примерно по периметру слегка наклоняя к столу и водите по краю подсыпая фракцию и водите, водите но это долгий процесс спасибо огромное за видео здоровья вам удачи и всего хорошего пока 👍👍👍
@Titan-oh6mg
@Titan-oh6mg 4 ай бұрын
Bro I need 18 inch silver mirror can u make it?? Foer me?
@samsagaz77
@samsagaz77 Жыл бұрын
Great video. Une Question. How much time take the rough grinding step to get the required spheric curve?
@astrovillager
@astrovillager Жыл бұрын
It takes about 10 hours, my mirror blank was thin ,so i dig out only 2.3mm sagitta,(f/8mirror) but if you dig out more sagitta to make a f/5 or f/6 mirror ,then it will take more time
@cybereagle-kd1sd
@cybereagle-kd1sd Жыл бұрын
Awesome video😍...is the glass which you have placed under is parabolic?
@astrovillager
@astrovillager Жыл бұрын
No, flat glass. Both are flat glass
@user-ri5nj4sz5m
@user-ri5nj4sz5m Жыл бұрын
Спасибо 👍👍
@Narsingh.P
@Narsingh.P 9 ай бұрын
Sir kaun sa mirror tool hai aur kaun sa object. I mean upar wala final mirror hai ya niche wala? Kindly reply
@astrovillager
@astrovillager 9 ай бұрын
Upar wala mirror, or niche wala tool
@fazalahmad7608
@fazalahmad7608 Жыл бұрын
Where you got abrassive Either online or any local store pls help
@astrovillager
@astrovillager Жыл бұрын
From bangalore , IAC
@alifchowdhury1854
@alifchowdhury1854 3 ай бұрын
Subscribed. One question though- Can I cut the blank from any kind of thickened glass or there is a special kind of glass from which the blank should be cut? By the way I'm also an Indian from West Bengal
@astrovillager
@astrovillager 3 ай бұрын
You can cut the blank from ordinary glass available on hardware shop . And I am from Tripura , India
@alifchowdhury1854
@alifchowdhury1854 3 ай бұрын
@@astrovillager Thanks for reply back. Right now I'm watching another video of polishing the mirror of yours. Get another question though. Will post that on that video's comment section, hope you reply back
@aslam8563
@aslam8563 Жыл бұрын
Is it necessary to grind secondary mirror or should it be plane?
@astrovillager
@astrovillager Жыл бұрын
Secondary mirror should be plane.It is not necessary to grind secondary mirror for amateur purpose.
@aslam8563
@aslam8563 Жыл бұрын
@@astrovillager thank u and one more thing what should be the dimension of secondary mirror if I take 12 inch primary mirror
@astrovillager
@astrovillager Жыл бұрын
70mm minor axis ×90mm major axis
@Astro_Om
@Astro_Om 6 ай бұрын
Bhai vo grid ko Hindi Mai kya bolte hai aur konse shop pe milta hai please batao
@astrovillager
@astrovillager 6 ай бұрын
Carborandum powder. Ye chese ordinary shope mai nahi milegi , mai jo link de raha hu uha por app ko sob miljayga or help vi or discount vi api.whatsapp.com/send?phone=917989484478&text=Mr.Ratan%20has%20referred%20me%20you%20for%20telescope%20making%20and%20told%20that%20I%20am%20now%20eligible%20for%20discount
@georgioskoronis4433
@georgioskoronis4433 Жыл бұрын
What's the glass thickness. It seems too thin...
@astrovillager
@astrovillager Жыл бұрын
Yes it is very thin, 8mm .
@user-ty8fn5sb6n
@user-ty8fn5sb6n Жыл бұрын
Is it slim?
@astrovillager
@astrovillager Жыл бұрын
Yes, 8mm
@butasingh146
@butasingh146 11 ай бұрын
Sir 1 se lekar sabhi grit ke naam bta do please
@hemandhkrishnakk4847
@hemandhkrishnakk4847 2 ай бұрын
what is the focal length for this mirror
@astrovillager
@astrovillager 2 ай бұрын
8 feet
@bangtan_armygirl7
@bangtan_armygirl7 2 жыл бұрын
From where you got abrasives
@astrovillager
@astrovillager 2 жыл бұрын
From India Astronomy Club sites.google.com/view/india-astronomy-club-iac/shoppping/telescope-making
@amargaikw
@amargaikw Жыл бұрын
12 inch F?
@astrovillager
@astrovillager Жыл бұрын
F = 8 feet
@amargaikw
@amargaikw Жыл бұрын
My 12 inch f6
@aslam8563
@aslam8563 Жыл бұрын
@@astrovillager 8ft focal length.then, did u also take tube length of 8 ft?
@astrovillager
@astrovillager Жыл бұрын
Yes
@aslam8563
@aslam8563 Жыл бұрын
@@astrovillager woww great effort
@butasingh146
@butasingh146 11 ай бұрын
Sar tell me all grit no. wise
@astrovillager
@astrovillager 11 ай бұрын
First grit is 80 grit and then 120 grit 220 grit 320 grit 600 grit 800grit 1000 grit (last grit)
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