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07-05-2008, 02:53 PM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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HEQ5 Pro+Newt, Nexstar 8 or dob+ArgoNavis?
I hope to be getting a new scope soon, but I still don't know what the budget will be (It's all tied up with selling my car - anyone interested in a 2005 Honda Civic? ). If all goes according to plan, I'm going to shoot for a used Nexstar 11 GPS. I'm in the queue of people interested in the used C11 SGT at Andrews Communications but I suspect I'll miss that one since I'm not first in line.
Well, if the budget doesn't work out, I'll probably still be able to wangle about $1,500 for a scope. Here's what I'm thinking:
Option 1 - hunt for a used Nexstar 8 of some kind. This would provide me with great portability, tracking (I'm sick of pushing my dob around all the time just to keep something in view) and goto. The only problem is the aperture fever!!
Option 2 - get an HEQ-5 Pro from Andrews for a grand and then a 10" or 12" f/5 dob, some rings and mount it on the EQ. If the budget is really tight I could mount my existing 8" f/6 on there. I'd still get tracking and goto with this, but the portability really suffers (as does the observing comfort - say hello to the step ladder!). BTW would this even work, or is this mount really no good for these scopes?
So how do I decide? Flip a coin? It worked for getting a girlfriend in high school, and now 14 years later we've been happily married for over six years!
Or should I scrap these and look at another option?
P.S. The letter aitch has stopped working on my keyboard. This post took a long time with cut and paste! Don’t try this at home kids.
Last edited by bindibadgi; 08-05-2008 at 11:57 AM.
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07-05-2008, 03:39 PM
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Registered User
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Join Date: Aug 2007
Location: Canberra
Posts: 490
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Hi
I have a HEQ5-Pro and I think it's great, my only comment is that I really think that an 8" is about as big as you can go on one.
If your seriously looking at using a 10-12" Newt then you would really need to upgrade an go to a EQ6-Pro but there's a big difference in price from buying a HEQ5-Pro on special and using your 8" to buying a 10-12" AND a EQ6-Pro (or better eg. Losmandy)
Something to think about ..
ps. Astroboy ftw
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07-05-2008, 03:54 PM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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Haha thanks (oh and I pinched someone else's keyboard so I can type again).
Why would you say that the 8" is the max for the HEQ-5? Is that for imaging, or is it too wobbly for visual too? If that's the case, I really should stick with my current 8". BTW the specs I found say the 10" OTA is 12.5kg and the 12" OTA is 25kg. Does that sound correct? I think my 8" OTA is about 8kg from memory.
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07-05-2008, 04:02 PM
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Registered User
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Join Date: Aug 2007
Location: Canberra
Posts: 490
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Quote:
Originally Posted by bindibadgi
Haha thanks (oh and I pinched someone else's keyboard so I can type again).
Why would you say that the 8" is the max for the HEQ-5? Is that for imaging, or is it too wobbly for visual too? If that's the case, I really should stick with my current 8". BTW the specs I found say the 10" OTA is 12.5kg and the 12" OTA is 25kg. Does that sound correct? I think my 8" OTA is about 8kg from memory.
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I believe 8" is the max on the HEQ5Pro for imaging, on average an 8" OTA weighs just under 10kg
I think sticking with your 8" and getting a HEQ5Pro on special is the way to go.
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08-05-2008, 11:15 AM
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Space Cadet
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Join Date: Feb 2007
Location: Sydney
Posts: 1,411
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I'm thinking the same as you. I have the HEQ5pro and I'm gonna stick a 10" LX200 on it. I'm only doing visual at the moment but when the urge to start taking photos takes hold I'll upgrade the mount then. I'd rather have something I can grow into that something I will grow out of. The 10" falls within the limits of the carrying capacity of the mount and I've heard of people with EQ6's that are exceeding there weight capacity and still doing photography with it so.... Fortune favors the brave or is it Fools die young? lol
Sandy
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08-05-2008, 11:56 AM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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Spanner has hit the works!
Now I'm thinking that for my budget I can get a brand new 12" dob and Argo Navis for push-to. If things go well I can add a ServoCAT drive system to make it goto and tracking. If things don't go so well I can still save up for that, so it's a system that can grow.
What say you good people?
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08-05-2008, 12:06 PM
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Computer tragic
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Join Date: Oct 2007
Location: Cheltenham, Victoria
Posts: 494
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Can't go too wrong with 12" + Argo, with room to improve later on  Should just squeak into budget.
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08-05-2008, 12:13 PM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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Thanks programmer. So in your experience, does the lack of tracking bother you much with your setup?
Wisdom would probably dictate push-to is fine with the possibility of adding the servoCAT later, but for you, would you trade down a bit in aperture to get the benifit of tracking?
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08-05-2008, 01:33 PM
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Computer tragic
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Join Date: Oct 2007
Location: Cheltenham, Victoria
Posts: 494
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Quote:
Originally Posted by bindibadgi
Thanks programmer. So in your experience, does the lack of tracking bother you much with your setup?
Wisdom would probably dictate push-to is fine with the possibility of adding the servoCAT later, but for you, would you trade down a bit in aperture to get the benifit of tracking?
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I've never had tracking, but I'm purely visual for the foreseeable future. I can imagine it would be great to have even for visual, but my next purchase is more likely going to be bigger aperture rather than a motor drive system. So for ME, it's aperture all the way. I'm already thinking > 12"...
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08-05-2008, 02:04 PM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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Excellent. I may have made my decision.
Of course, if I can get that used C11 SGT from Andrews, then that's going to make the decision hard!
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08-05-2008, 02:24 PM
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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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12" dob + Argo is an awesome combination!
You don't need servocat for a scope that small, but if you want it later on, there's nothing stopping it of course!
You can also get an EQ platform if you want tracking for visual observing.
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08-05-2008, 02:58 PM
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Registered User
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Join Date: Aug 2005
Location: Hahndorf, South Australia
Posts: 4,373
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Pushing a Dob around to chase highly magnified planets is a pain though!
For Deep Sky it's a dream.
Imaging has limited possibilities without purchasing expensive, larger mounts or eq tracking platforms.
All the best with your choice.
Doug
ps...my choice would be Prova's setup! But that's probably out of the budget by $1k or so...shame!
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15-05-2008, 09:27 PM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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I'm still undecided on this.
I'm currently leaning towards stretching the budget a bit and going for an EQ6 Pro and an ED80. Then I can piggyback the ED80 on my 8" Newt and have a nice observing/imaging all-rounder setup. Then I have lots of room for upgrading the OTAs later as the budget, and the wife, allows.
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15-05-2008, 09:56 PM
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Registered User
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Join Date: Oct 2006
Location: Adelaide
Posts: 658
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that would be the way to go although you would image through the 8" so you wouldn't need the ED80 if its only for guiding, an ST80 would save a few $ and if you are really keen you could get a guide cam aswell as the achro for about the same price as the ED80.
if you were going to image/observe through the ED80 then ignore what i said about the achro/guider.
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15-05-2008, 10:40 PM
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Registered User
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Join Date: Sep 2007
Location: Bundoora,Victoria
Posts: 35
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Quote:
Originally Posted by White Rabbit
Fortune favors the brave
Sandy
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And ships called ENTERPRISE.
Now who said that.
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15-05-2008, 11:29 PM
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4000 post club member
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Join Date: Sep 2004
Location: Melbourne
Posts: 4,900
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Quote:
Originally Posted by dugnsuz
Pushing a Dob around to chase highly magnified planets is a pain though!
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It doesnt have to be....
link
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16-05-2008, 08:42 AM
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beam me up
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Join Date: Dec 2004
Posts: 73
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you'd be amazed just how much the HEQ5 can handle. Ive got a 10" newt and a 120mm refractor on mine and take ok guided shots. I got a local engineering company to make an extension for the counter weight shaft to i can slide the 3 x 5kg weights right out / balance the extra weight.
i am sure i have seen someone on this forum with a 16" truss-tube dob on an EQ6 !!!! take it to the limit baby!!
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16-05-2008, 09:29 AM
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Registered User
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Join Date: Apr 2008
Location: Canberra
Posts: 99
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Wow! That HEQ5 with the 10" newt and 120mm refractor doesn't get wobbly in the breeze? How much does that payload weigh?
15kg of counterweight hanging down on a lengthened shaft really does sound like you've taken it to the limit!
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16-05-2008, 02:20 PM
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beam me up
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Join Date: Dec 2004
Posts: 73
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I try not to breathe on the setup when imaging - lol
Although i dont know for sure, i'd say around 30kgs. I wouldnt say it was rock solid either, but does the job under ideal conditions (ie: NO wind, breeze, slight seismic events or astro-flatulence). I have taken images up to 5 minutes long with no problems through the main scope - longer with wide field lenses.
The mount does suffer from periodic error (as do they all) but if your just doing visual work then it is more than adequate.
Ya gotta push ya gear :-) !!!
PS. I am nearly up to 50 posts - go me !!!!!!!
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17-05-2008, 09:42 PM
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Registered User
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Join Date: Mar 2008
Location: Ellenbrook,WA,Australia
Posts: 34
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69.pdf
70.pdf
71.pdf
Hi there!
Hope this few reviews will help you
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