Tiny Telescope - a pocket sized Dobsonian

Ғылым және технология

Could it be the smallest 4" telescope in the world?
I build this little Dobsonian as a scale model of my 16" f/4 Propdob. Initially just for fun and for display purpose only, but it appeared to work just fine! I brought it as an extra telescope on one of my observing trips to La Palma, and I made quite a few observation and sketches through it.
Visit www.roelblog.nl (in Dutch) to find more info.

Пікірлер: 83

  • @Obsidian762
    @Obsidian7622 жыл бұрын

    Wow! This makes me want to build my own cat sized telescope.

  • @woody5109
    @woody5109 Жыл бұрын

    Be clear, you can buy them way cheaper then you can build them. However, it’s not always about money, it’s very satisfying and rewarding to build something like this. This guy is a great craftsman, don’t kid yourself, he knows what he’s doing. Great job.

  • @aliceinwonderland8314

    @aliceinwonderland8314

    Жыл бұрын

    I'm not convinced, but it could be my perspective is a bit warped cos I'm in the middle of an engineering degree. The biggest issue/cost is likely to be the parabolic mirror at the base and getting it's maths right. The rest of the raw materials look relatively cheap and could easily be made with a bit of carefully planning, drilling, and a hacksaw. I reckon you could make similar for under £200. Considering all the truss tube dobsonians I can find start at £800 but are usually a couple thousand, it'd be cost effective. I can find cheaper dobsonians, but they're not collapsible.

  • @Roelarex

    @Roelarex

    6 ай бұрын

    @@aliceinwonderland8314 Good parabolic mirrors this size are not that expensive. I did not make the mirrors myself, but salvaged them from a Skywatcher table top Dobsonian, those are widely available used for under 100 Euros/Dollars.

  • @lllllsp1d3rlllll

    @lllllsp1d3rlllll

    6 ай бұрын

    No I looked u can't buy one I need one as a truck driver cous I don't have room in my semi for a telescope

  • @rosaluks644
    @rosaluks644 Жыл бұрын

    The “scale cat” at the end is a nice touch

  • @MrPixelspin
    @MrPixelspin2 жыл бұрын

    Great little telescope. Clever and well made!

  • @dirkcornelis5708
    @dirkcornelis57082 жыл бұрын

    Craftsmanship and art. I think I saw a small scope like this when I visited a few years ago.

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    Yes you did!

  • @satyajitbhadraroy7723
    @satyajitbhadraroy77232 жыл бұрын

    Nicely done. Great show!!

  • @xe1zlgg
    @xe1zlgg Жыл бұрын

    I am in love again !!!... with this tiny little scope..

  • @edwardhandrich6043
    @edwardhandrich60439 ай бұрын

    Brilliant design and it looks amazing.

  • @gregwing6409
    @gregwing64092 жыл бұрын

    Amazing job! Cheers-Greg

  • @RazorChrist
    @RazorChrist2 жыл бұрын

    I see you found the cat nebula. That dob is adorable! (The cat too)

  • @lfcdan1
    @lfcdan12 жыл бұрын

    That's awesome! You're very talented!

  • @kriseckhardt5148
    @kriseckhardt5148 Жыл бұрын

    I totally love this! However I have never heard creepier music on the internet!

  • @blue2824
    @blue282410 ай бұрын

    Wow, I love this!

  • @CosmicgirlAstro
    @CosmicgirlAstro2 жыл бұрын

    Wow that's Amazing ! I would deffo buy something like this !

  • @Luftbubblan
    @Luftbubblan11 ай бұрын

    Very nice, love that you built it like a proper full-size one :D

  • @tjzambonischwartz
    @tjzambonischwartz2 жыл бұрын

    You are truly a mad man.

  • @rosaluks644
    @rosaluks644 Жыл бұрын

    A telescope video turning into a cat video - nice!

  • @owenllewellyn5692
    @owenllewellyn56923 ай бұрын

    I see you aren't biased- you own a dob and a cat. Lovely project.

  • @nordmende73
    @nordmende732 жыл бұрын

    Fine Art!

  • @tarange02
    @tarange022 жыл бұрын

    That’s pretty awesome! If you put a raspberrypi zero and a cam on it, you could stream full HD video on your iPad with that. I think I’ll try that for the summer.

  • @chrisshelton3504
    @chrisshelton35042 жыл бұрын

    Brilliant an beautiful!

  • @Edubarca46
    @Edubarca466 ай бұрын

    Beautifulo,. Wherer can I buy the kit or where can I get plans to make one?

  • @dienachtwache
    @dienachtwache Жыл бұрын

    Amazing, i love it.

  • @stevebrooks6144
    @stevebrooks61442 жыл бұрын

    This is so cool 👍

  • @fernandodearaujo3694
    @fernandodearaujo36942 жыл бұрын

    Very cool. Great!

  • @Nottsboy24
    @Nottsboy242 жыл бұрын

    Pretty cool 👌🔭

  • @Asifkhan31416
    @Asifkhan314162 жыл бұрын

    Excellent. 👏👏

  • @MountainFisher
    @MountainFisher2 жыл бұрын

    I have a Zhumell100 F4 tabletop and it is only adjustable by the secondary mirror. Had to use shims to keep it aligned.

  • @jonathanhansen3709
    @jonathanhansen37092 ай бұрын

    Cute little travel scope. 102mm would allow you to track down all the Messier objects if you know where they’re at.

  • @ASTROindi
    @ASTROindi9 ай бұрын

    Good One.

  • @borcz100
    @borcz1009 ай бұрын

    glorious!

  • @Sergey_Sergeev
    @Sergey_Sergeev2 жыл бұрын

    Cute!

  • @kiritengineer7506
    @kiritengineer7506 Жыл бұрын

    Excellent sir ji

  • @fififilou9966
    @fififilou99662 жыл бұрын

    Very good 👍👍👏

  • @aasifkamaal4507
    @aasifkamaal4507 Жыл бұрын

    Awesome

  • @lllllsp1d3rlllll
    @lllllsp1d3rlllll6 ай бұрын

    You should build these and sell them I would love one just a little bigger there are none on the market I'm a truck driver and I don't have room for a telescope but I love astronomy.

  • @remblankenburgh
    @remblankenburgh2 жыл бұрын

    Geniaal :-)

  • @hoshizoraclub_
    @hoshizoraclub_2 жыл бұрын

    今度は小さい! 工作が正確で丁寧ですね!

  • @joeshmoe7899
    @joeshmoe789911 ай бұрын

    Is this sold on Aliexpress yet?

  • @gazorbpazorbian
    @gazorbpazorbian2 жыл бұрын

    OMG I LOVE THIS! I have a CNC, could you share the design so I make one my self? where did you get the mirror! what can you see with it?

  • @chasehorton2324

    @chasehorton2324

    Жыл бұрын

    It's 100 mm aperture and and a 6 inch starter scope is 150mm so its not too bad especially for the size. For the amount of light amplification, binoculars normally have an aperture of 75mm to put it in perspective, so it should be decently better than binoculars.

  • @lllllsp1d3rlllll
    @lllllsp1d3rlllll6 ай бұрын

    After my research u could of gotten a hole lot more focal length for the same size mirror

  • @MikeWolfs93
    @MikeWolfs93 Жыл бұрын

    Grand Prestige +1

  • @junglejim7664
    @junglejim7664 Жыл бұрын

    How many of the Messier objects has the cat found?

  • @comunistasuave
    @comunistasuave Жыл бұрын

    Omg this music came direct from hell

  • @Astrofrank
    @Astrofrank11 ай бұрын

    Cute telescope, could be commercially successful, too.

  • @xe1zlgg
    @xe1zlgg Жыл бұрын

    It is possible to buy from you this telescope ?

  • @Gunk8642
    @Gunk86427 ай бұрын

    Music sounds much better at 1.5 speed

  • @gruffcube
    @gruffcube2 жыл бұрын

    420TH SUB LESSSS GOOOOOOOO

  • @bridgetfredrick6656
    @bridgetfredrick66565 ай бұрын

    Do you ever sell these?

  • @ZeeshanKhan-ud4bt
    @ZeeshanKhan-ud4bt Жыл бұрын

    Frome where i can buy it

  • @fcostheta5523
    @fcostheta55236 ай бұрын

    Could you share the blueprint and how did you find the mirrors?

  • @Roelarex

    @Roelarex

    6 ай бұрын

    Sorry. I dont have any blueprints. The mirrors are salvaged from a Skywatcher Virtuoso tabletop Dobsonian.

  • @kencur9690
    @kencur9690 Жыл бұрын

    Can you see planets in the Andromeda Galaxy with this?

  • @springbloom5940

    @springbloom5940

    Жыл бұрын

    All of them

  • @annaoaulinovna
    @annaoaulinovna Жыл бұрын

    can you share drawings of parts.

  • @3DPrinting_And_More2515
    @3DPrinting_And_More2515 Жыл бұрын

    I'm curious if it works, there's no pictures.

  • @Roelarex

    @Roelarex

    Жыл бұрын

    This type of telescope is purely for visual use. Like binoculars it's not designed for photography. Some sketches of objects seen through this telescope can be found here: www.roelblog.nl/2019/11/twee-messiertjes-met-de-summierian-m8-en-m22/

  • @johnnycash4034
    @johnnycash40342 жыл бұрын

    😂 you have the biggest and the smallest of these. Pretty cool 😎 Whatever the chances of you sharing the files? I'd like to build my kid one.

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    Haha, thanks! I once had a 76mm Dob, but it had an other design... I get lots of messages from people asking if I would send them my plans for building a telescope. Even if I would like to, I couldn’t - my “plans” are mostly scribbles, incomplete, messy and totally unusable for anyone but myself. For those who want to use my designs, feel free to do so but please understand that all I can provide are the pictures on this website: www.roelblog.nl

  • @johnnycash4034

    @johnnycash4034

    2 жыл бұрын

    @@Roelarex no worries. Should be easy enough to build from scratch. Thanks for uploading and such. Have a great day

  • @user-oz5ek1os1i
    @user-oz5ek1os1i2 ай бұрын

    Это что? Сувенирный телескоп ?

  • @FP-fb6jk
    @FP-fb6jk2 жыл бұрын

    Geweldig, Roel! Gebruik je ‘m ook?

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    Jazeker! Ik had ik 'm al eens mee naar La Palma als "extra" telescoopje. Dit soort beelden kun je er dan mee zien: www.roelblog.nl/2019/11/schets-pleiaden-boven-de-kraterrand-la-palma/

  • @lornaz1975
    @lornaz19752 жыл бұрын

    Are those .965 or 1.25 eyepieces? Not that .965 are bad if they are. Some of the best eyepieces ever made have been that size.

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    They are 0.965" Japanese orthoscopic eyepieces. Indeed pretty good, but of course with a somewhat limited field of view. I choose a small focuser because it simply looks better: the scope is meant to be a scale model of my 12" Propdob.

  • @lornaz1975

    @lornaz1975

    2 жыл бұрын

    @@Roelarex I figured it was the simple focuser too. Those .965 focusers sometimes had friction fittings like yours. That is what tipped me off to it being that size. You did a great job. Where did you get the primary mirror?

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    The primary mirror is from a Skywatcher Heritage 100p. It's also a f/4, like the 12". The tiny secondary is from a 76mm Skywatcher Infinity.

  • @lornaz1975

    @lornaz1975

    2 жыл бұрын

    @@Roelarex Cool! Thanks for showing us!

  • @vietnamastronomicalassocia8189
    @vietnamastronomicalassocia81892 жыл бұрын

    Do you sell it?

  • @Roelarex

    @Roelarex

    2 жыл бұрын

    No, I do not sell any of my telescopes...

  • @wordclock707

    @wordclock707

    2 жыл бұрын

    @@Roelarex These would fly off of the shelves. The ultimate functioning desk decoration for telescope geeks, and a great lightweight set-up for camping and backpacking!

  • @_stardust62
    @_stardust6211 ай бұрын

    Cats will never work for the police...

  • @meeponinthbit3466
    @meeponinthbit34665 ай бұрын

    I click nerdy videos that have cats in their thumbnails.

  • @techer6374
    @techer63742 жыл бұрын

    Это самая странная музыка, что я слышал :-|

  • @springbloom5940
    @springbloom5940 Жыл бұрын

    This is pretty cool, so Im biting my tongue and trying very hard not to be 'that chick', about the very serious technical problems.

  • @ConcealedWeapon
    @ConcealedWeapon5 ай бұрын

    Nice telescope, but the music is terrible

  • @user-je1cf4ds8g
    @user-je1cf4ds8gАй бұрын

    🤭👍🤣гарна ідея! Я думаю що у кожного астронома любителя повинен бути такий телескоп. 🤭😉✌️😆

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