How To Make Eyepiece For Telescope | Homemade 26mm Plossl Eyepiece Calculation | Nonsense Creativity
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- čas přidán 4. 06. 2021
- How To Make Eyepiece For Telescope | Homemade 26mm Plossl Eyepiece with Calculation | Nonsense Creativity
In this video:-
1. How to make Plossl Eyepiece at home.
Cameras used:-
1. Samsung M30s (Standard cam)
2. Samsung Galaxy S7 ( Telescope camera)
Material Used:-
1. Two Identical Achromatic Doublet Lenses (4 elements) Dia. 20mm (50mm focal length )
Material - Glass
3. Pipes and socket
1/2" upvc socket (lens housing)
5mm pvc pipe (spacer between lenses)
32mm (1.25") Dia. pvc pipe (main body)
4. Black Sandpaper (anti reflecting inner coat )
Tools Used:-
1. Hacksaw
2. caliper tool
3. Sandpaper
4. Scale
Queries:-
1. how to make an eyepiece at home
2. DIY eyepiece for telescope
3. plossl eyepiece design
#NonsenseCreativity #plossleyepiece #DIYeyepiece
well done...
god bless you
Amazing good job!
Welcome bro
Thank you for the video
Welcome bro
Why we use Ramsden eyepiece
hi , can you please share the working /design and construction and optical formulas of the plossal eyepiece ,
i searched but there is no one source of info on the web , and it gets confusing
Few things need to be considered while making plossl eyepiece
1. Both lenses should be achromatic doublet
2. Keep minimum distance between two lenses for maximum magnification
3. Use anti reflective coating or black paper from inside (i use black painted 400 grit sandpaper for this and it works great.
That's it.... All the best 👍
where to get the spacing size ?
Please can you share the material used? And can i use it with refractor telescope as I have seen you have reflector one.
hi.. I added all details in the description.. please check 👍👍 .thank you
Thanks for the reply. Can I use it with refractor type telescope?
@@mozillafirefox5441 yes.. all types of telescopes..
@@creativeamol thanks for the reply
That len was convex and concave or convex and flat ? Also how much mm long 1len was?
Both lenses are plano convex means one side is flat and other is covex....both lenses are identical 20mm in dia
@@creativeamol 🙌👍🏻 thanks bro for help
@@Whooperrboi welcome bro 😊
Hello sir which formula it is to calculate focal length of this eyepiece, in general which formula we have to use.
Formula is shown in video please watch the video again....🙂
Can we take the spacer length by own
Yes u can ..it will effect the magnification of eyepiece
@@creativeamol thanks for replying soon (the best telescope guy)
Please share the link of these lenses. I am unable to find these exact specs
Actually I retrieved theses lenses for old binacular....but recently I found similar lenses on Amazon...but small. In diameter
Anand traders 13mm dia achromat doublet lens with 20mm focal length for telescope eyepiece www.amazon.in/dp/B09716GG96/ref=cm_sw_r_apan_glt_fabc_9X2XSC0338YFKEZF7H37
I hope it will help you 👍
Sorry for the late reply... But what will be the final focal length of the eyepiece by using these lenses.. Thank you.
@@rakhi9227 its depends on the distance between two lenses.....so follow the formula shown in this video as per your design👍👍
Hi sir i'm 14 mm eyepiece with 127mm fl of a convex lens so how i can measure the C spacer ??
sorry .. don't understand what you are saying if eyepiece has 14 mm fl the what is 127mm?
@@creativeamol my objective lens has 127 mm fl..
you will get approximately 9x magnification... 127/14 =9
best way to measure spacers c is just open it and measure.... don't fall in calculation if you have it already... i beleive that there will be a minimum almost no space between lenses.....
@@creativeamol ok bro thanks
Sir .. how you got the value of C spacer.. please explain 🙏🏻 i need to know
Value of spacer is up to you... It will define tha magnification....so minimum is better
It's me
@@Creative_Amol yes but in the formula , how you put the value (13) of C?? How do you measure it ? Its thickness 13 mm??
@@creativeamol thank you
13 ??
Where you get the lens telescope.
From old binocular
You might find it on Amazon too....or just bye cheap eyepieces and make one powerful
Thanks so much
how to determine the focal length
follow the given formula 👍
25mm Dia / 200 focal length. I will make plossl lens. What is the distance between the two lenses? Please let me know🙏🙏🙏
As close as possible.. try not to touch each other
@@creativeamol thanke sir
I made it but it didn't invert the image when I used it in telescope
You need errect prism to invert the image... I made a video on it
hai, maap, saya kurang mengerti rumus, darimana saya bisa menentukan nilai C nya ?
English please...
@@creativeamol Sorry for the inconvenience, I ask about: where can I determine the C value? or this treatment only applies to shorten the value of F ?
@@sandyriyadi Hi, thankyou... Distance or value of C is as minimum as possible.... but avoid touching lens surfaces eachother....5mm will be perfect in most cases 👍
25mm Dia / 200 focal length. I will make plossl lens. What is the distance between the two lenses? Please let me know 🙏🙏🙏
Minimum distance is better
That's me