Is A No Need To Collimate Newtonian Telescope Possible?

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Is A No Need To Collimate Newtonian Telescope Possible?

#1

Post by Refractordude »


Did not think this was possible until now. Perhaps marketing hype or I am not reading it correctly. Left click the image.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#2

Post by carastro »


Not heard of that before.

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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#3

Post by Bigzmey »


They are stretching the truth a bit. If you handle them gently solid tube DOBs hold collimation for a while; truss DOB like this would require more frequent adjustments.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#4

Post by notFritzArgelander »


Bigzmey wrote: Fri Mar 12, 2021 1:20 am They are stretching the truth a bit. If you handle them gently solid tube DOBs hold collimation for a while; truss DOB like this would require more frequent adjustments.
Yes. Collimation will be needed from time to time. The advantage of this strut (not truss) scope is that on a real truss scope you WILL have to collimate every set up. With the collapsible strut design you might occasionally be able to skip a collimation on setup. I used to have the 14" truss dob from Orion and it needed collimation every time I assembled the trusses.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#5

Post by NGC 1365 »


Will occasionally need collimation. Every dob or reflector will eventually need collimation depending on frequency of use. With the right tools and attitude, collimation is a breeze. When setting up my 18 inch scope after driving to a remote sight, it usually takes only minutes to collimate to a high level good enough for high magnification use exceeding 500x.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#6

Post by AstroBee »


I have a little 130mm OneSky that is of a similar design with only two struts and can tell you I check collimation every time I set it up and rarely have to make adjustments. But I'm very careful to not bang it around. It is stored, collapsed, in its original box with styrofoam padding.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#7

Post by Graeme1858 »


That was the telescope I had before the one I have now. The missus and I had many fun times with her on the screwdriver and me at the eyepiece directing the collimation.

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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#8

Post by yobbo89 »


I have this scope and it is some what ok with holding collimation, plenty enough for visual,it does bump out a few mm once and awhile , shown when checking with my laser collimator. overall it's pretty practical and holds an ok collimation even when packing it away with using the telescopic truss poles, the only thing i usualy realy collimate is the spider/secondary mirror which gets bumped,twisted a bit when moving around the yard and inside the house.

also that price is way to much, i payed $799 aus new 6 years ago..
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#9

Post by Thefatkitty »


Yeah, I had the 12" version of this for a while, but it was just too big for here. And it needed a bit of collimating every now and again as well.

I have a 4.5" reflector that comes in at f/7.8 and a 3" that dials in at f/9.2. Old Japanese-made scopes, and unless I accidentally whack the back end where the primary is, I rarely have to collimate them. The 3" I've collimated once (when I bought it) in three years; still bang-on. As close as I've ever come to a maintenance-free refractor :D

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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#10

Post by AntennaGuy »


They said there was no need between uses. During use, however...
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#11

Post by Piet Le Roux »


They don't say that it does not need collimation they just state that it does not need collimation every time you assembled it like a truss design, I have a truss Dobson and yes I have to do collimation every time I assemble it...but I have developed a smooth system using a laser and it takes less than 3 minutes and then I know the scope is 100% every time I use it.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#12

Post by OzEclipse »


Like Piet, I have a full truss tube newt, mine is 18" diamter and I have to collimate it every time. With a laser mine takes about 5-6 mins. The advantage of using a laser with a 2.5m focal length is that you don't need two people.

My 6" f7 solid tube newt does not require frequent collimation. When it does, it only takes a few minutes. In general, people who don't own newts make a big deal about collimation which is really a very simple and quick procedure.

If collimation requires tools, try to modify it with some sort of knobs, so that you can collimate by hand.

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Re: Is A No Need To Collimate Newtonian Telescope Possible?

#13

Post by 25585 »


F6 & slower solid tube Newtonians need less collimating. 10" F6, 8" F6 & 6" F8 are mine. I also have 10" F5 & 12" F5 solid tube scopes, not too much trouble.
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