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engchris
super member


Reged: 05/17/12

Loc: Florida
Travel scope opinions
      #5269491 - 06/13/12 12:51 PM

I recently purchased a Celestron Nexstar 8se and love the scope. However, since I live in a apartment and am only able to take the 8se out once a week (weather permitting) to a dark site I'm already looking to purchase a smaller second scope. I really want something I can keep in my car, pull out at a moments notice, not have to worry about power supplies and cables and such, and do some quick observing. I'd love to be able to just set it up on a table, top of my car, stool, etc... I'd also like the most bang for the buck.

Do any of you have experience with these little table top scopes? I'd be interested to hear your opinions on which you feel is the best bang for the buck. I'd like to keep it around $200 if possible but could be talked into going a little higher depending on the scope, portability, etc. I've looked at the Orion Starmax 90mm table top and a few others and also Meade's smaller ETX line. I realize the ETX requires a power source for the goto functions but didn't know if it was possible to use without power. I'm not really too interested in goto since my 8se already has that and I don't really need goto for finding planets. However, if I could use the scope without goto and it was just an added bonus and the price was right I could swing it.

Anyway, thanks in advance for any advice. Also, I know how everyone loves these "which scope to get" threads so I appologize for adding yet another. Cheers!


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Thomas Karpf
Pooh-Bah


Reged: 02/09/09

Loc: Newington, CT
Re: Travel scope opinions new [Re: engchris]
      #5269518 - 06/13/12 01:03 PM

Do you have a decent photo tripod? If so, that would mean that you could put 100% of your budget into a small refractor/reflector/cat OTA.

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Tony Flanders
Postmaster
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Reged: 05/18/06

Loc: Cambridge, MA, USA
Re: Travel scope opinions new [Re: engchris]
      #5269578 - 06/13/12 01:35 PM

See my review at skypub.com/$100scopes. I haven't tried the StarMax 90-mm table-top, but I know the optical tube and don't see why it shouldn't work just fine on this mount.

You would end up with a very different scope from the 80-mm refractor -- much better at high power but lacking the superb low-power, wide-field capability of the 80-mm refractor.


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CosmoSat
scholastic sledgehammer


Reged: 07/24/09

Loc: India
Re: Travel scope opinions new [Re: Thomas Karpf]
      #5269622 - 06/13/12 01:54 PM

The Orion Starblast 6, but the finder would need to be upgraded.... a bit expensive for the size n accessories that it comes with.. atleast compared to the 8" dobs ...

Clear Skies!

Sat.


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Epsilon_Lyrae
member
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Reged: 07/27/11

Re: Travel scope opinions new [Re: CosmoSat]
      #5269702 - 06/13/12 02:44 PM

Have you considered a Bushnell Ares 5? It's a 5 in. collapsible reflector on a dob base. I haven't used one, so I can't tell you if it's good. The reviews seem to be generally favorable. I believe it costs less than $200.

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Midnight Dan
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Reged: 01/23/08

Loc: Hilton, NY, Yellow Zone (Bortl...
Re: Travel scope opinions new [Re: Epsilon_Lyrae]
      #5269773 - 06/13/12 03:24 PM

Hi engchris:

I went down this road a while back. I started looking at the table top models and bought the Starblast 4.5. It's a nice scope and I don't think you can do much better for the price. So if your price limit is pretty solid, that's what I'd recommend.

BUT ... I ended up getting rid of it. One of the problems with table top models is that they require a very stable table if you want to use them at reasonable magnifications. Either that or you're kneeling on the ground. The other problem is that I was used to the quality of the views in the 8SE and the Starblast just fell too far short for me. It had very noticeable coma in the outer 30-40% of the view.

These smaller scopes do not perform well on DSOs ... obviously because of the limited aperture. They also won't do too well on planets because you need high mag and it's hard to get the needed stability without either a very solid (large/heavy) tripod or sore knees. They're great for low mag wide field views.

So what did I end up getting? Well, I have 2 "travel scope" setups but unfortunately neither one is $200. The first is an Orion EON 72mm ED refractor on a Vixen Mini Porta mount. It can fit almost anywhere for lightweight travel. I'm not really excited about the Mini Porta, but it is very small and is acceptable (if a bit touchy) at up to 150x or so. Like the Starblast, it's best for lower mag wide views.

The second travel scope is actually a 5SE. You may not realize it, but the SE mounts can be used without a tripod as a table-top model if desired. The 8SE is a bit top heavy for this mode, but the smaller models work well. In fact, the 5SE is actually smaller than the Starblast 4.5 when used this way! Here's a photo comparing the two when I owned both:


Yes it does require power, but you can use the internal battery compartment, or do what I do and use a small NiMH rechargeable battery pack that is stuck to the top of the base with velcro:


I too was looking for a $200-ish scope to toss in the car for quick use. But after trying several setups, I began to realize that I'd rather spend the money to have a scope I'm happy with.

So, if money is your primary limitation, then the Starblast 4.5 is a reasonable choice. If you're looking for the ultimate in portability, a small refractor on a lightweight alt/az mount might do the trick but will cost more. If you're willing to spend the bigger bucks, then the 5SE provides a lot for the money. Excellent views, 5" of aperture, goto and tracking, tabletop or tripod use ... very versatile - but not cheap!

-Dan


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SeattleScott
scholastic sledgehammer


Reged: 10/14/11

Re: Travel scope opinions new [Re: Midnight Dan]
      #5270252 - 06/13/12 08:56 PM

If you really want to keep it in the car all the time, a refractor would be nice from a collimation perspective. Especially if you have to drive over potholes or speed bumps on a regular basis. Somewhat kills the convenience factor if the collimation is always off. An SCT or Mak would also hold collimation better than a reflector.

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*skyguy*
Pooh-Bah
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Reged: 12/31/08

Loc: Western New York
Re: Travel scope opinions new [Re: engchris]
      #5270270 - 06/13/12 09:07 PM

Meade has a refurbished ETX-80AT on sale for $224.25 on their website:

http://www.shopatron.com/products/productdetail/Meade+ETX-80AT-TC%2C+Factory+Refurbished+%230805-04-21RE/part_number=0805-04-21RE/1323.0.1.1.57212.28926.0.0.0?pp=8&

I have a 70mm F5.6 refractor on small Celestron Alt-Az goto mount and it's loads of fun. It makes a great little grab-n-go scope.


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engchris
super member


Reged: 05/17/12

Loc: Florida
Re: Travel scope opinions new [Re: *skyguy*]
      #5270290 - 06/13/12 09:26 PM

Can the ETX be used without a power source? For example, could I manually move it in all directions manually if I didn't want to use the goto function, unlike the 8se that you can only move the altitude but not azimuth without a power supply. The refurb ETX 80mm seems like a decent deal. Especually if it comes with the tripode. It's only about 30 bucks more than the Orion starmax 90mm table top, however, the starmax is 90mm and is an MCT. Choices, choices....

Thanks very much for the help and thanks Midnight Dan for the in depth post. Much appreciated. After hearing your troubles with the table top I am reconsidering that option.


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engchris
super member


Reged: 05/17/12

Loc: Florida
Re: Travel scope opinions new [Re: engchris]
      #5270307 - 06/13/12 09:40 PM

also, I probably won't actually keep it in the car full time since the Florida sun would more than likely melt it, but being able to grab and go would be great. It could potentially spend an extended period of time in the back seat however, and I live on a street that the local officials don't seem to care about ever repairing despite the huge pot holes so something that won't easily lose collimation would be wonderful as well.

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spaceoddity
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Reged: 07/28/09

Loc: Cloudsylvania
Re: Travel scope opinions new [Re: engchris]
      #5270616 - 06/14/12 02:30 AM

Bushnell Ares 5 seems to be exactly what you are looking for. For ~ $150, you're not gonna beat it. You will need a collimation tool however.

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Maverick199
Postmaster
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Reged: 02/27/11

Loc: India
Re: Travel scope opinions new [Re: engchris]
      #5270697 - 06/14/12 06:04 AM

How about AT72ED though you require a tripod.

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engchris
super member


Reged: 05/17/12

Loc: Florida
Re: Travel scope opinions new [Re: Maverick199]
      #5270730 - 06/14/12 07:12 AM

Thanks for all the suggestions! I don't know much about Bushnell scopes as I'm relatively new to the hobby but will definitely check out the Ares 5. Is the AT72ED made by celestron? Does anyone know if it's possible to buy just the 4se or 5se OTA and mount on something like a small table top dob mount, thus reducing the cost?

Also, to answer a previous question, I unfortunately don't have a camera tripod to use.


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izar187
Pooh-Bah


Reged: 09/02/06

Loc: 43N
Re: Travel scope opinions new [Re: engchris]
      #5270824 - 06/14/12 09:06 AM

I've kept newts in vehicles for decades, for just this type of application.
You keep in mind that there is a scope onboard and drive accordingly, yup. It quickly becomes second nature.
Collimation is something that one checks and adjusts as needed with each use of a scope.
Like the fuel level in the vehicle, but with no volatile chemicals involved.
Open the widows and the newt tube for the drive to observe. Start the cooling with this moving air, as it makes a difference.

Table top scopes are only as stable as table being used, what ever that may be.
This stability for high power and focuser position will most likely evolve a bit over time.
If the ota is a keeper, then don't be surprised if the grab and go ota eventually ends up off the table and on a dedicated tripod of it's own.

Edited by izar187 (06/14/12 09:10 AM)


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craytab
Carpal Tunnel
*****

Reged: 06/10/11

Loc: Bethlehem, PA
Re: Travel scope opinions new [Re: izar187]
      #5270855 - 06/14/12 09:37 AM

I agree that the Ares 5 is a great choice. Here is a review done by a CN expert: http://www.opticsplanet.com/reviews/reviews-bushnell-dob-5-compact-truss-tube-dobsonian-telescope-opticsplanet-edition-review-35221.html

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ensign
professor emeritus


Reged: 12/16/08

Loc: Southwestern Ontario
Re: Travel scope opinions new [Re: izar187]
      #5270856 - 06/14/12 09:37 AM

I struggled with this question for a while. I tried a C5 on a video tripod with a tilt and pan head. That setup suffered from some ergonomic issues.

I bought a used Stellarvue M1 mount head and put it on the video tripod. I used the C5 and a Baader 8-24 zoom with this setup. Somehow I was just never satisfied with the views through this combination.

I finally settled on a Skywatcher Equinox 80. The scope, three eyepieces, a red dot finder, a diagonal and a red flashlight all fit into the included case which also qualifies as carry on luggage. With the afore-mentioned video tripod and mount I now have a very usable travel scope that provides excellent views of all kinds of objects.

Of course, you need to temper your expectations somewhat - after all you're dealing with 80mm of aperture. But for brighter objects - particularly under dark skies - this setup is a winner.

The Equinox does double duty. It also makes a great wide-field scope for my Mallincam.


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Maverick199
Postmaster
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Reged: 02/27/11

Loc: India
Re: Travel scope opinions new [Re: engchris]
      #5270947 - 06/14/12 10:30 AM

Quote:

Is the AT72ED made by celestron? Does anyone know if it's possible to buy just the 4se or 5se OTA and mount on something like a small table top dob mount, thus reducing the cost?

Also, to answer a previous question, I unfortunately don't have a camera tripod to use.




Made by Astrotech but you do need a tripod, unless you plan to piggyback but then it wouldn't be portable.


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SteveG
Post Laureate
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Reged: 09/27/06

Loc: Seattle, WA
Re: Travel scope opinions new [Re: Maverick199]
      #5271116 - 06/14/12 11:45 AM

Ares 5 is my travel scope as well. I found a large piece of foam to wrap around the tube as a light shield (it has an open truss design). This foam also doubles as a case for the scope. I use the dob base when space is a concern, or it also mounts via its dovetail on my Porta II.

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Alan French
Night Owl
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Reged: 01/28/05

Loc: Upstate NY
Re: Travel scope opinions new [Re: SteveG]
      #5271146 - 06/14/12 12:06 PM

As others have mentioned, a "table top" telescope requires a stable table. If you're thinking of putting it on top of a car, that can be problematic too. Most modern cars have rather rounded surfaces.

Clear skies, Alan


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Joe R.
journeyman


Reged: 05/02/12

Loc: Eastern MA
Re: Travel scope opinions new [Re: Alan French]
      #5271284 - 06/14/12 01:31 PM

I decided that a small size refractor on an alt-az tripod would serve the purpose of a grab-n-go. My choice came down to the Astro-tech AT72ED or a used Stellarvue 80mm when I went to NEAF. The AT72ED is a nice scope and that's what I should have gotten but I went with aperture and got the Stellarvue aplanat. I put the scope on an Astro-tech Voyager tripod and it is very easy to carry around and stash in the car if needed. It's not airplane handy but I don't see myself carrying a scope as carry-on baggage in the future!

Joe R.


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