Is A No Need To Collimate Newtonian Telescope Possible?
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Is A No Need To Collimate Newtonian Telescope Possible?
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?
Not heard of that before.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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?
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
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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.
Ivan
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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?
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.
Regards
Graeme
Regards
Graeme
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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..
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?
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 atf/ 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
All the best,
I have a 4.5" reflector that comes in at
All the best,
Mark
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
They said there was no need between uses. During use, however...
* Meade 323 refractor on a manual equatorial mount.
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
* Celestron C6 SCT on a Twilight 1 Alt-Az mount
Prof. Barnhardt to Klaatu in The Day the Earth Stood Still: "There are several thousand questions I'd like to ask you.”
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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?
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.
Joe.
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.
Joe.
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Re: Is A No Need To Collimate Newtonian Telescope Possible?
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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