24" Hubble Optics Dobsonian update
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- Опубликовано: 8 сен 2024
- Here is an update and closer look at the 24 inch Hubble Optics UL Dob that i will be primarily using to do planetary imaging with, but make no miistake other targets will deffinitely get a look.
Everything is assembled ready to use in the video, although i have not yet set up and run the GoTo system software. This will be the next step as well as centre the primary and then collimate.
Subscribe and follow if you are interested in the content, also if you have some ideas of what you want to see with this scope or my others leave them here in the comments or on twitter @damo251 and i will get to them if i can. I already have about 10 targets to image from friends with it, but no reason why we can't have more.
Clear skies
Damien 
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“16-inch is pretty decent” 😂
What a beast - look forward to the results of imaging Damien.
Got to keep up with people like you leading the way mate, haha
Work of art mate..... Just gorgeous kit!
That's very kind thankyou, I look forward to getting stuck in to the imaging with it this year. Should be good
What a beauty! I have a 10" dob and and I can barely see galaxies from bortle 3. That must be incredible to look through 🔭
I havent had it out yet, but hopefully in a couple of days. It should be good, more content to come soon.
Little late, but keep looking and learning to see and you should be able to see a huge amount with a 10" from bortle 3. It's never going to be Hubble quality images (nor is the scope featured here) but that's more the difference between long exposure photographic images and what your eye can see that it is a function of the size of the scope.
Bigger is better 😊 congrats that will be some amazing views!
I hope so Cory it wasn't cheap haha. Some imaging content with it soon.
A Telrad on this beautiful beast. Love it, mate. Wax On🔭👏👏👏
Glad you like it William I always believe in function over form😊👌
That is awesome. Loved learning more about dobs!
They are a great scope, there will be more content about them soon sudscribe if you are interested in learning more👍
Imagine how amazing this would work in dark skies, 12” is already great
We will find out soon, looks like the clouds will part on christmas day.
Beautiful scope mate.
Thanks Chris, it's a bit of a weapon 😁
Wow! Very very excited to see the images this produces. Good luck with the first light!
Thankyou and wont be long to see how it goes, will depend on the skies weather we have a night imaging or night obserrving with eyepieces and phone
My HO14UL is shipping this week. I am looking forward to running it through its paces and to compare with my Obsession 20F5
Congratulations on your new purchase and take your time with assembling of the secondary and focuser/ upper housing.
One thing I am sure you will love is it probably doesn't weigh much more than than just the primary on the 20" 😁👍
woaaaaw!
Glad you liked it,thanks for the comment
I'm not even an amatuer telescope person, BUT I love seeing the posts from people like you. How do you keep the mirror clean when it's outside?
You dont let it worry you, if there isn't dust on it it is not being used. It will get dusty but the reality is it may degrade the image by a few % after a year if you do nothing about it, Meh
Awesome 👍🏻
Thanks Joe I'm glad you liked it🙂
looks like an alien weapon
At 24 inches I may be able to spot a few with it👍
I’m just starting out with my stellalyra 8inch dobsonian.I’ve seen some of the planets and my next target will be Orion followed by andromeda.✌️
A great journey has begun, good luck and clear skies👍
That is one nice scope!
To be honest it is better than i thought as far as build quality goes, the mirrors i have experience with and will be great. All scopes have slight use differences i will have to learn but im sure it wont take long. Hopefully nice stuff coming soon.
@@damienk2372 Look forward to it!
Would love that scope but the mirror just looks too exposed... I would be scared
Nothing to be scared about I believe, you can cover the sides and bottom with fabric or whatever you want if you would like to closed it in. I don't think anybody is imaging or out in 30kph wind where dust would be a problem. I think it's a positive but see your point👍
Great! What are the steel rulers at the bottom for?
I believe it was, instead of having bespoke items being made it was "lets use these already made stainless steel rules instead", i am guessing but i think that was it.
Do you use an automatic tracking system? I'm curious about the accuracy.
Yes it has goto but I have only had it out once for a few days and I just found a target and set it to track without doing a full star allignment. It seems good but I will get back to you with a better explanation when I have set it up properly.
Holy Molly!That is a beast! I'm curious about the protruding pins on the primary mirror. Do that act as retaining clips to keep the mirror in place? There's a large gap between them and the mirror. Do they cause any kind of diffraction in your images? Besides of course the 3 from the secondary spider.
The pins are there to protect the mirror if all else fails, last line of defence if you like. You will only see the pins and the spider vanes when a long way out of focus on a very bright object.
Great!
Thankyou
How do you keep the primary clear when you're using it outdoors? Wouldn't the slightest bit of dust kicked up land on it?
That's a good question, I use a shroud when I have the scope outside and don't really use them when it's very windy.
It looks like this design would be a problem for that but it's actually the opposite, because it's so easy to get to the mirror you can more easily see if there is a problem and then clean the problem easier as well.
Hope that helps
Damien
@@damienk2372 Oh, yeah! That would make a looot of sense. It does. I've been doing a fair bit of research into building a telescope to make my dollars go as far as possible for my first telescope. Been debating the strut style dobs or a fixed tube, but the strut style ones just seem so much more elegant and like the superior engineering choice
@@Big_Red_Dork I definitely like my 2 truss scopes 👌
Enorme telescopio yo tengo un dobsoniano de 16 pulgadas
Hi Misael,
As you may have seen on the channel i also have one and the size between them is an order of magnitude bigger. And the Hubble Optics UL Dobsonian series is an extremely compact and lightweight version of a telescope.
All the best
Damo
@@damienk2372 amigo yo lo fabrique solo compré el set de espejos el enfocador y la base el espejo primario la araña la fabrique y también el finderscope saludos desde Honduras
Oh vaya, eso es genial.
Parece que estarás muy ocupado por un tiempo. Mucha suerte y cuéntame cómo te va.
Mis mejores deseos
Damo
Tal vez comente un video nuevo, youtube no notifica bien sobre comentarios antiguos.
@@damienk2372 si amigo la astronomia es fascinante hago observaciones con un sct meade de 8 pulgadas un refractor de 131 mm 1200 y el dobsoniano de 406 mm 1800 f 4.5 estos dos últimos los construí y muy buenos
Somehow I see your telrad crashing onto the primary. Is it only fastened to your telescope by double sided tape at those two small areas?
It is fastened with screws as well as the double sided tape so it will be all good. I do also use a shroud but it would just cover everything up here so i left it off.
Damien
how do you rate the quality of the sandwich mirrors?
Keron, I suppose the best way to show you would be to say I owned the 16" for 2+yrs and then went and spent 3x the money on a 24". Which should tell you I like them a lot.
very nice. So what kind of nebula images is the UL24 inch Dobsonian capable of performing? 😎 Thank you and a sent an email to Tony. Ps. How do you clean the 1st surface mirror?
The astrophotography performance will be based on how we work around a few issues. Coma would be the main issue but at this stage i need to build an area to set up the scope so i can leave it out in mainly good weather and then we will be able to use it far more freqently. I believe it will be similar to planetary imaging where as the Dobsonian is not the ideal choice for the majority of high class planetary imagers but we are able to find a way around its limitations to the point where most may accept that the way forward in planetary imaging will be this exact type of scope.
Long and the short of it are leave it with me and i will try and mitigate it limitations with lots of use going forward👍
This is a 2 second sub of the Tarantula nebula with the planetary cam QHY5iii585c and nothing else, no coma correction at all on an F3.3 mirror.
twitter.com/damo251/status/1607028497947721728?s=20&t=g9Z__0H4OwgI_07uOAsOtg
Cleaning is done as per instructions in the manual with a non invacive cleaning detergent.
The owners name is TONG, as he has an Asian heritage not Tony or if you have made a typing error then my appologies
.
Damien
@@damienk2372 Thanks for the info and leave it up to me to mess up the name. 🤔
Did you ever use it visually like looking at dso im wondering if you could see galaxy features spirals arms and stuff with naked eye
Yes you can👍
Hello Damien, I subscribed to your channel, I have been following it for a while, because this brand of telescopes catches my attention; I had two Meade LB16" and a 12" LB, and several 8" ones, the largest ones with notable mechanical deficiencies, problems maintaining collimation and excessive weight, but nothing that could not be solved, I even transported them daily for public observations with excellent results (more info on my channel Alfredo Agustoni).
I am currently advising a community on the installation of an observatory and my natural choice is a 20" to 24" Dobson, motorized, due to the simplicity of the design and operation, and the lower risk of electronic failure, especially since it is going to install at 4000 meters above sea level, and the large field of view compared to a 14" SCT, for example; I would like to ask you, if it is not a bother, how much it occupies in centimeters along the telescope placed in a horizontal position, calculating from the center of the base to the end of the secondary support, to calculate the minimum diameter of the dome.
Greetings and congratulations for your channel!
Hi Alfredo I'm glad you are enjoying the content.
Any observatory to keep the scope ready to go would be superb👌
It's a little under 2.2 meters tall and when it's horizontal the primary mirror rolls back into the base so it's a little less than 2 meters measuring from centre to the edge.
I hope this helps.
Eyepiece height at Zenith is 1955mm👍
Damo
@@damienk2372 Damien, thank you very much for your response, it is exactly the information I needed; Possibly later I will need to refer to your knowledge of this particular equipment.
Greetings!
A 4mtr + dome is on the large size Alfredo 🤔😁😁
i have the 16" f5, and though its a beut for deep sky, it just seems like I cant get a good image of the planets.. almost like I have a ghost double image.. im not sure if its just bad collimation or heat plume, but I thought i had it collimated pretty well.. how are the optics on yours?
Hi Matt,
That's very nice, I did contemplate the F5 when I bought my 16" a while ago but ended up with the F4.5 for eyepiece height reasons in the end.
Probably 80% of the images on the channel are with my 16".
There are lots of reason unfortunately why this could be happening. But it sounds like it may be a combination of collimation or thermal related, rather than seeing induced. Are you having big temperature swings during the night? And what are you using to collimate with a laser or a Cheshire?
I'm interested in getting this telescope within a year or two, but can't find a "Go To" system in the list of options. Do you know anything about this?
Hi Einar,
Thanks for the comment mate and it's a good scope.
It's a bit hidden when looking on a mobile device, look at the 3 small horizontal dashs on the top right of the page and tap it. It will give you the list of all the scopes for sale (12).
www.hubble-optics.com/UL24g.html
Hope it helps
Damo
@@damienk2372 Many thanks for the answer. I'm a bit clumsy online, but I found it now when using my PC. I read an article in Hubble Optics' presentation where a customer had bought an 18 inch and he was mostly satisfied but had a few small complaints. There was an article in "Astronomy Technology Today" from 2014, so this may have H.O. already improved.
@@damienk2372 Thanks a lot! - I'm a bit clumsy online but I found it using my laptop. I read an article in "Astronomy Technology Today" on the Hubble Optics website, written by someone who bought the 18 inch. where he complained about some small things, but that was an article from 2014. This may have already been improved by Hubble Optics.
@@damienk2372 Thanks a lot. - I'm a bit clumsy online, but I found it using my laptop. I read an article in "Astronomy Technology Today" on the Hubble Optics website, written by someone who bought the 18 inch. where he complained about some small things, but that was an article from 2014. This may have already been improved by Hubble Optics.
Can i put this thing in my skywatcher eq5?😂😂 jk crazy scope there
I 100% think it will be ok on your eq5 but your RA tracking may suffer a touch👌
@@damienk2372 ah i knew it.. hm ill try it anyways
wow. what is the weight of the heaviest unit of assembly?
Hi Screeshab,
The heaviest part of the puzzle is less than 30kg in weight.
Damo
@@damienk2372 thank you. the design looks so so beautiful
Hello very good Work
I would like to know
what type of belt did you use ?
Gday Boris thanks for the comment and question, not sure I know what you are asking but I want to answer your question.
What did you mean by "belt"?
@@damienk2372 I think the question was for cable sling that edge supports the primary mirror. There are the two preinstalled shaft near the primary where you can install it.
@@damienk2372 My 20" has also a two point edge support with no astigmatism induced in the image
Boris if you mean edge support of the mirror mine has no sling/belt used and it uses a 2 point system which can be seen if you follow this link
www.cloudynights.com/topic/854055-unboxing-my-24-hubble-optics-dobsonian/page-3 👍
Hello Damien,
My english is not perfect.
I am living in France.
I made a goto dobson 9 " High resolution planetary. With the same technologie
Althought i did not know your telescope.
It is similar to.the one you have.
Your mouvement for Height is possible because you have a 2 "belt" ( Gates belt ?) and 4 pulley.
I would like to know
What type of Belt, power transmission
Xl, MXl, 2MGT
what f ratio is this
Hi, my 24 inch scope is F3.3, hope that helps 👍