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18-03-2010, 02:13 AM
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Searching for Travolta...
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Join Date: Jan 2010
Location: Brisbane, Australia.
Posts: 3,700
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Should I own more than one scope, why do you'll have so many?
I was in a bit of a quandary the last couple of days. Currently i have a 6" dob (my first scope purchased only 3 mths ago which i love to pieces). A few days ago I came across a really great offer to buy a 10" dob for $400 (used of course), and very close to home. My 6" is already set up and ready to go near the front door, the 10" i figured would be for special times as i don't think i can regularly handle an instrument weighing in at ...let's just say i'm built like a feather. Hub & I debated and argued on said topic. He said you only ever need one scope, i said most people here have got several, there must be good reason for it. Anyway, he won, scope not bought  . He said that getting another dob would be stepping sideways to wait and get something better one day, but still only have the one scope. Is this true? Is it worth having both a 6" and 10" dob? And now please be gentle on me... I am new you know- so why is it so many of you'll have so many scopes, i'm truly interested, not having a dig in any way, seriously. I had trouble just getting 2!
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18-03-2010, 02:45 AM
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Refracted
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Join Date: Sep 2007
Location: Carindale
Posts: 1,178
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I have 3 scopes currently + binoculars, and they all have different uses. In my case it is a matter of focal length, with the smaller refractors being better for wide field use, and the SCT being targeted at dimmer/smaller stuff. I don't have a dob, but often wish that I did.
Generally speaking unless you have your own observatory, the easiest scope to set up will see the most use. My current rig takes about 45 minutes to set up and align for imaging use, and about 15 minutes to take down, which prevents me from setting it up on iffy nights, and in fact I have not had it out since December as a result. My first SCT, an LX-90, took about 3 minutes to get to the point of starting an alignment. I had it out every mostly clear night.
You may want to start a secondary thread, "Should I own more than one mount, why do you all have so many?"
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18-03-2010, 02:53 AM
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Registered User
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Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
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One 4" refractor as a widefield and for grab & go occasions, and a larger Mak for lunar & planetary.
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18-03-2010, 03:13 AM
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Plays well with others!
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Join Date: Nov 2004
Location: Ridgefield CT USA
Posts: 3,535
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Classic debate...different scopes have "best" uses.
Does your husband have only 1 screwdriver? Does he have more than 1 pair of shoes?
You can do remarkable things with 1 scope but sometimes a different perspective is nice therfore more than 1 scope.
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18-03-2010, 04:52 AM
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Sir Post a Lot!
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Join Date: Sep 2004
Location: Gosford, NSW, Australia
Posts: 36,799
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There are also the die-hard astrophotographers, who own more than one scope because one might be a guide scope and the other the imaging scope. Or one for short focal length and one for long.
If the 10" is too big and heavy for you to carry out to use regularly, then I wouldn't get it unless you can leave it setup. Like the others said, the best scope is the one you use.
In general, buying more scopes is because people get addicted to the hobby and want bigger and better
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18-03-2010, 07:43 AM
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![[1ponders]'s Avatar](../vbiis/customavatars/avatar45_9.gif) |
Retired, damn no pension
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Join Date: Nov 2004
Location: Obi Obi, Qld
Posts: 18,778
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Well to be honest, what the others have said is true, but then it does get to become a little bit like stamp collecting for some.
But back to your issue. Your 10" dob (see you've already bought it  ) can be quite easily moved if you have flat access. If you were to get a cheap "fridge" trolley then a 10" Dob is very easy to move about. We use one at the Mapleton Observatory to shift the 12" outside and back in again. Certainly saves the back.
Should you get a 10"? Definitely. The increased light gathering power will allow you to see things you would not hope to see in your 6 inch. From my quick calculation you will have a mirror that is approx 2.8 x larger in area than your six inch mirror. Think of the increased light gathering power and the depth you will be able to go to pull out those faint fuzzy galaxies.
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18-03-2010, 08:29 AM
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Spam Hunter
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Join Date: Jun 2005
Location: Oberon NSW
Posts: 14,437
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Yep. I agree.
I currently have a bit of a menagerie of scopes.  I started with a C8 and binoculars. Then bought a PST solar scope for solar viewing.
When I built my observatory I took the plunge to upgrade my mount to an EQ6 and I bought an ED80 for guiding and "short" focal length imaging. Then a C11 came up for sale at a good price so I got that to replace the C8  . And then the 16" lightbridge came up also at a good price, and I got that to use to visual stuff (and for when visitors come around  ) so I can leave my obs set up for imaging.
I planned to sell my C8 and CG5 mount, but after seeing the results I'm getting from the C11 with the Staranalyser spectroscope that I have, I'm not sure its the right thing to do. I can get much better results from the C8 than the C11.
I think if you upgrade to a 10" or 12" dob, provided you can devise a way to move it and set it up easily (a trolley is good if you can) then I'd suggest you could pass your 6" on and you'd still only have one scope...
Al.
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18-03-2010, 09:04 AM
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Registered User
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Join Date: Aug 2007
Location: Beautiful SE Tassie
Posts: 4,734
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18-03-2010, 10:22 AM
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Registered User
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Join Date: Feb 2005
Location: Monto
Posts: 16,741
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Hey Suzy!
LOLOL Aperture fever already.
You might find the 10" too awkward to handle. I sold mine on for that reason. You don't want to do yourself damage and you don't want to be dependant on others to help you set up.
An 8" is a very good compromise for your situation.
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18-03-2010, 10:39 AM
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Searching for Travolta...
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Join Date: Jan 2010
Location: Brisbane, Australia.
Posts: 3,700
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All good advice coming my way. Thank you all for taking the time. Lyz, nope i didn't get it, though i need to know this stuff for future reference, You have a good point- i suppose i should get used to my 6". But, is $400 an offer that i shouldn't resist or will there be plenty more down the track at that kind of price do you think, because if so, i will happily wait.
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18-03-2010, 10:53 AM
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Country living & viewing
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Join Date: Mar 2006
Location: Armidale
Posts: 2,790
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I own 3 scopes but really only need 1 to look through. My 200mm scope is my main one and I have a refractor as a guide scope. The 3rd scope is a smaller refractor that was my guide scope in the past. It now is only used for public viewing on a cheap mount. I could sell it but it is useful occasionally for public outings. I woudn't get much for it so I have kept it.
The 10" or an 8" will show you much more than the 6" and if you can move it you will use it lots.
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18-03-2010, 11:03 AM
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Searching for Travolta...
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Join Date: Jan 2010
Location: Brisbane, Australia.
Posts: 3,700
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Aperture fever? My gosh, have i got a disease already? But, but,  i only started 3 months ago. All of youl have scared me so much with the scope curse, and I fear it so much I say prayers on purchase in fear of repercussions- But a disease now too?????  Is there a pill for it?  No, - wait - that's actually not that funny!
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18-03-2010, 11:08 AM
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Registered User
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Join Date: Aug 2007
Location: Beautiful SE Tassie
Posts: 4,734
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Hi Suzy .... I think that $400 for 10" Dob is great as long as scope and mirror OK. As jjj says, they can be a bit awkward, but think didnt jjj had a Dob??? Dobs are easy as you just pick up the tube and plonk it in the mount ... only 2 bits basically. With equatorials, you have to position it on a tripod, and that would be tricky and very awkward.
If you are still in 2 minds, go and have a look at it, and see if its too heavy for you. Usually you dont have to carry too far - house to car, and when observing out with a group, your car is next to you.
At home I have mine set up on Bunnings trolley, so just wheel it in and out.
If you think you are going to stay with this great hobby, go and have a look at it - you can always sell the little Dob if pressed for $$.
Wish I was down there, I would go with you
Good luck!!
PS ... Buy it!!
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18-03-2010, 11:10 AM
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Supernova Searcher
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Join Date: Mar 2005
Location: Cambroon Queensland Australia
Posts: 9,326
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Quote:
Originally Posted by Suzy
Aperture fever? My gosh, have i got a disease already? But, but,  i only started 3 months ago. All of youl have scared me so much with the scope curse, and I fear it so much I say prayers on purchase in fear of repercussions- But a disease now too?????  Is there a pill for it?  No, - wait - that's actually not that funny!
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 Suzy, how well you treat the disease, equates to how big your wallet or purse is
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18-03-2010, 11:16 AM
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Registered User
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Join Date: Feb 2006
Location: Warragul, Vic
Posts: 4,494
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If you can move the 10" from its storage to the observing spot by trolley(no steps), then buy it. If you'd have to carry the scope give it a miss.
The 10" is very easy to move by trolley and the base easily fits through doorways.
A smaller, easily portable scope complements a larger light bucket - they both have their advantages.
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18-03-2010, 11:17 AM
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Registered User
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Join Date: Feb 2005
Location: Monto
Posts: 16,741
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LOL @ Liz
Yes, I went from a 60mm wobbletronic to a 10" dob. What a difference that was. 
But then I got the imaging bug (yes another disease Suzy, incurable this time I'm afraid and much more expensive to keep under control, see my equipment list in my signature)
I'm content with what I have now, it should serve me well for many years. (unless I see something else that I really really want/need)
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18-03-2010, 06:08 PM
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Registered User
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Join Date: Feb 2009
Location: Renmark, SA
Posts: 2,993
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THe rationale for having multiple scopes is generally niche filling, as some people have their main scope, (maybe a large dob for example), and then add grab n go wide-field sweepers and/or smaller maks/refractors for grab n go planetary to their collection.
Then you have some people that collect scopes as part of their hobby.
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19-03-2010, 12:09 PM
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Searching for Travolta...
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Join Date: Jan 2010
Location: Brisbane, Australia.
Posts: 3,700
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It concerns me that Nettie sold her scope for the same concerns I have. And yes, I would be relying on help getting it in and out of the car. I just found out the tube weighs 12 1/2kg which is a bit more than a quarter of my body weight. I put that in so you can see the bigger picture with one of my concerns. But then perhaps I have strength i don't know of yet.
Nettie, were you only reliant on the 10"? Or was it still a hassle to use on the odd occasion even if you had a smaller one? Am I foolish to assume I would still use the 6" if i had the 10" around, and then end up only relying on the 10"? That's where I'm at, at the moment i guess. I thought an 8" might be a good compromise, and sell off the 6", but i've heard there isn't much of a difference between the two (?). It would have to be a fair amount of difference to sell scope and pour more money into a new one. Hubby already spent money and work putting wheels on and did repairs to the mount because it was so stiff! Honestly, i don't know why they didn't go just one step a little further with these dobs!
Lyz, as for the tube and mirror you mentioned... I was told over the phone that there was a dent (surface only) on the tube and the mirror was dirty. Made me nervous, but as i don't know a lot about these things (hubby was very nervous about mirror) i don't know how nervous i should have been.
By the way, i just finished reading an article in this month's Aus. Sky and Telescope magazine on "What to know before you buy". It was highly informative and I learnt a lot, despite me doing a ton of research before I got my scope! This had to be the most informative read yet. Highly recommended to newcomers that haven't purchased yet. In one section, it pointed out that with a glob, I would get the same view with my 6" at a dark site as a 10" in the city, and that a 12" won't capture some famous clusters, i.e. the Pleiades - would the 10"?
I've learnt a lot from you all and from this article (which was timed well for my query!) I so appreciate everyone's generous help, what a fantastic bunch of people on here! Hopefully, my questions within this reply will be my last on this topic as i don't want to hassle you'll any further on the same topic. I've been a good student, I've learnt a lot from you'll already!
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19-03-2010, 12:42 PM
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Starcatcher
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Join Date: Dec 2006
Location: Gerringong
Posts: 8,548
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Suzy, I suggest you concentrate on getting all you can out of your 6" telescope for some time. I started with an 8" scope and had a great 12-15 months before I upgraded. Many people are happy with 6" or 8" for years.
BUT, you must get it out to a dark sky site from time to time to really appreciate what it can do.
If you do have some spare cash building up, investing in better eyepieces would be a good move. I suggest that you work out what you might want to have (lots of threads on this and lots of decisions) then monitor the classifieds and see when they come up second hand. Pounce and you'll improve your views. Then you carry the eyepieces to your future telescopes. Most will transfer happily.
Try to get to a starcamp. 1) Others will happily show you what your scope can do and 2) you will be able to borrow different eyepieces and see how they perform with you and your scope.
(At this point I have to admit I have three scopes, plus one coming, plus a Galileoscope or three, plus binoculars  )
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19-03-2010, 12:55 PM
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Registered User
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Join Date: Aug 2007
Location: Beautiful SE Tassie
Posts: 4,734
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Ok Suzy .... keep the 6" for awhile longer. If the mirror on the 10" is dirty, it will need cleaning, and thats a whole other ball game.
The 6' is great, and you will get great views of deepsky objects
As Eric has said, try to get to some club viewings and have a look through their scopes.
Eps are a whole new (and expensive) topic, with lots of info on IIS.
Relax and enjoy your Dob .... a year down the track, who knows!!
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