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Roelarex
Registrace 22. 04. 2015
Amateur astronomer living in the Netherlands. I like to design and build telescopes, mostly Dobsonians, and make visual observations with them. From my backyard to the pristine skies of La Palma, visual observing of the deep sky is what makes my world go round.
From time to time I'll upload some clips about newly finished building projects, some timelapses or other astronomy related stuff. Enjoy, hope you like it!
From time to time I'll upload some clips about newly finished building projects, some timelapses or other astronomy related stuff. Enjoy, hope you like it!
Total Solar Eclipse from Eagletown, Oklahoma
First quick video edit of the incredible solar eclipse near Eagletown, Oklahoma. I made this short video with a Nikon D3200 attached to a 1000mm f/10 MTO "Russentonne". My goal was to catch the elusive "Baily's Beads" with relatively cheap/simple equipment. It worked!
zhlédnutí: 236
Video
Orion Starblast complete telescope makeover
zhlédnutí 1,8KPřed 10 měsíci
I took the optical components of one of my friend's Orion Starblast to transform it into a backpack transportable travel scope. Parts reused are both mirrors, the primary mirror cell and the spidevane assembly.
The Big One - a Portable 25" Telescope
zhlédnutí 46KPřed 2 lety
With little doubt the largest telescope I'll ever own: a huge 25" (635mm) aperture truss Dobsonian! I built this monster early 2022, using a high quality mirror set salvaged from an abandoned telescope found in Germany (read the complete story of this incredible barnfind here: www.roelblog.nl/2021/10/bizarre-schuurvondst-de-grootste-telescoop-van-nederland/). This video shows the complete assem...
Tiny Telescope - a pocket sized Dobsonian
zhlédnutí 28KPřed 2 lety
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.
400mm f/4 Airline Transportable Dobsonian Telescope Assembly
zhlédnutí 37KPřed 2 lety
Assembly video of my 400mm f/4 truss airline transportable Dobsonian telescope. The first trip was to the island of La Palma in August 2021, where a made this short video. For more details see this thread on the CloudyNights forum: www.cloudynights.com/topic/743145-roels-16-f4-ultralight-traveldob-propdob-mega/
Het Mpemba effect: van kokend water naar sneeuw in 0,5 seconden
zhlédnutí 3,7KPřed 3 lety
Op weer.nl verscheen net voordat de koudeperiode begon een kort lijstje met bijzondere verschijnselen die met sneeuw en kou samenhangen. Een soort Messierlijstje voor winterkou dus. Heel erg leuk: www.weer.nl/nieuws/2021/winterinval-een-gids-voor-al-het-bijzondere-dat-kan-optreden Ik heb ze bijna allemaal kunnen afvinken, maar de ijsnaalden en het Mpemba effect ontbraken nog. Nu blijven alleen ...
Lusk Wyoming Total Solar Eclipse
zhlédnutí 1,2KPřed 6 lety
On August 21, 2017 our group was invited on A&L Ranch near Lusk, WY to watch the solar eclips from the top of a hill. The view was absolutely amazing (even without the eclipse), but when totality hit us right in the face, it became one of the most memorable locations and experiences of our lives. Being able to observe the eclipse on such a remote location, far away from the crowds, was amazing....
Timelapse: assembling a 250mm f/4 ultralight truss Dobsonian telescope
zhlédnutí 55KPřed 8 lety
A short timelapse movie of me assembling a home build 250mm f/4 truss Dobson telescope for a night of observing. More: www.roelblog.nl
Mirador Astronómico - Time-lapse of the La Palma Night Sky
zhlédnutí 2KPřed 8 lety
In August 2015 I travelled to the wonderful Canary island of La Palma to observe the night sky with my home-built telescope. Meanwhile, I made a series of time-lapse sequences in which I tried to capture the splendor of the incredible La Palma night sky. I am mostly a visual observer and not particularly a astophotographer, and besides some test sequences shot at home, this is my first attempt ...
How do you use this telescope in the Netherlands, which has the worst light pollution in Europe? There are some dark places left in France.
same music in alien -whats the name?
I learned so much more than I was expecting watching this. That telescope is amazing, super impressive work!
Beutiful design 🤓👍👍👍
Hello my friend Congratulations, I really liked this project, it's incredible, could you transfer the project to a 114mm F900 telescope, I'm very grateful
Это что? Сувенирный телескоп ?
...who is interested for a CROWDFUNDING ?...I would gladly cooperate for one of those...very compact...and a fun to assembly!
Nice
Cute little travel scope. 102mm would allow you to track down all the Messier objects if you know where they’re at.
Mocowanie lusterka wtórnego straszne 😱a tak to fajny sprzęt ,extremalnie kompaktowy
Wat een avontuur Roel 😊
Thank you for sharing your videos. I've been copying your design to make an 8 inch travel dob. After I cut the circle in the mirror holder, can I place the mirror in directly? Does it rest on top of the three collimation bolts on the inside? Do you use any clamps? I am worried about the safety of the mirror. I see you have the exterior cover, but does anything protect it or harness it on the inside? is it just glass next to wood? Thanks.
Excellent!
Supermooi
I see you aren't biased- you own a dob and a cat. Lovely project.
I would love to buy 200 or 250mm version of this to take on trips, very nice piece of kit.
Love it. Thank you for taking the time to share.
would love to see the mirror cell
Beautiful design
Incredible! Which focuser did you use?
I made the focuser myself out of an old camera zoom lens: www.cloudynights.com/topic/174947-helical-focuser-from-a-camera-objective/
Слушая зловещий музон, я все время ждал, когда автор уронит вторичку или долбанет главное зеркало))
I click nerdy videos that have cats in their thumbnails.
Nice telescope, but the music is terrible
Do you ever sell these?
After my research u could of gotten a hole lot more focal length for the same size mirror
Thats bad azz i would love that
Can u build me one? I'm a truck driver I don't have room for a telescope
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.
How do the bearings stay so evenly on the track? I see on your other telescopes there is a little piece on the outside of the bearing that prevents it from leaving the track. I don't see that on this however. I'm building a telescope based on studying your videos and I'm curious about this point. Thanks!
When everything is cut and mounted square and precise, the sideway movement is should not be a problem. However, I'm using a equatorial platform now, and that means the scope's base is not always parallel to the ground anymore, so I installed some Telfon sliders on the side to prevent the sideward movement of the mirror box.
Beautifulo,. Wherer can I buy the kit or where can I get plans to make one?
Could you share the blueprint and how did you find the mirrors?
Sorry. I dont have any blueprints. The mirrors are salvaged from a Skywatcher Virtuoso tabletop Dobsonian.
Music sounds much better at 1.5 speed
Interesting looking scope and great music.
Perfect music choice!
Music is strange :DDD Like in E.T. :D Nice dobson telescope. Do you have a friction brake on the base?
@Roelarex Sir, please provide the height of eyepiece at zeneth! It's crucial information! Your suspenseful music would lend me to guess, but you could be 190cm tall!!! Symphony SWELL!!!! INTENSE CHORDS!!! 😃
Eyepiece height at zenith is 135cm. Note the "lowrider" design of the upper tube assembly to reduce the eyepiece height. An equatorial pIatform built for this telescope adds about 6cm. Your guess was actually pretty close, I'm 188cm tall. :)
Brilliant design and it looks amazing.
Good One.
glorious!
That is one dangerous little ladder you are using, After your fall and feel the effects of gravity, you will then realize your need a real full size ladder.
As with all of your truss designs, this is absolutely exquisite.
Surprised I haven't seen this on Aliexpress yet
Can you please share the drawings/design of this little scope? So other DIY can build it.
Wow, I love this!
What size secondary are you using?
It's 80mm (minor axis)
Cats will never work for the police...
I want the same in 12" F/5
Donde lo puedo comprar?
Very nice, love that you built it like a proper full-size one :D
Cute telescope, could be commercially successful, too.