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asaint
Carpal Tunnel
   
Reged: 04/25/03
Posts: 2021
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ExploraDome and POD Observatories
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RLTYS
Carpal Tunnel
   
Reged: 12/18/04
Posts: 1741
Loc: New York (Long Island)
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To All
An excellent article. I was espically interested because our club ASLI (Astronomical Society of Long Island) just had a Pod Observatory delivered to our observing site.
Clear skies Rich (RLTYS)
-------------------- 10" F4.8 Refl.
4" F5 Refr.
50mm F12 Refr. (Tasco #6TE-5)
12x63 and 10x50 Binoculars.
"I want to do more then just look."
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Chris Schroeder
Postmaster
   
Reged: 12/11/04
Posts: 5098
Loc: N.E. WI Sky Glow
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Thank you Rich, glad you enjoyed it, it was a labor of love for both Jim and myself.
-------------------- Chris
Mallincam Color Hyper Plus
10" DSH with SC DSC, CPC 800 XLT
M102ED S.V., ZS 80FD 10th Anniv, ZS 66SD, PST
POD XL3 http://POD.SchroederCity.com
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Snaproll
Post Laureate
   
Reged: 02/20/04
Posts: 3491
Loc: Wisconsin
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Yes, ditto
Some additional info I've found since the review and some PM questions I've gotten....
Since the review was written, Polydome is now also offering a complete 10X10 building kit for $3300 and shipping. The round building kit is now $1810 to $2024 depending on dome type, (black lined or unlined). Trust me, the white dome with the black liner is the way to go. Of course they still have the domes, wheel kits etc available separately "for do it your self" custom observatories.
The shipping normally runs $250-$300 according to their website. My shipping was only $125 because I live in cow country and their trucks make a pass this way every couple of weeks delivering farm stuff like calf shelters, so the shipping will vary depending on your location and choice of carriers.
I got a couple of PM's asking about the automation progress with the ED. I don't have plans on automating either of my ED's but here's the feedback I got. There are three known ED's in operation with automation using the Lesvesdome driver, the Techical Innovations azimuth sensor and the Velleman K USB board.
What all that means I don't know.
What I guess it means is moving the dome manually while you're imaging is a mute point if you have an automated setup. I haven't even considered an automation kit because with my 10" I can take all the subs I want in an hour without needing to move the dome, but I guess if you have a completely automated obs at a dark site, this voodoo stuff is the way to go
Edited by Snaproll (10/17/07 12:39 AM)
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adkstars
member
Reged: 03/11/06
Posts: 77
Loc: Au Sable Forks,NY
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When considering an Observatory I looked at what would best suit my needs. I'm bothered by stray light and with an existing 10" concrete pier I saw the POD as too small and walls too short to correct my situation.I opted for the ED and it solved everthing for me. As stated by others it is a matter of preferance and personal needs. I'm thankful to all who are filling the gap for us poor folks who can not afford a Keck Observatory of their own. Rick
http://www.freewebs.com/adkstars/index.htm
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rphinney
newbie
Reged: 09/25/07
Posts: 1
Loc: Michigan
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Very much appreciate the extensive and well written review.
I had considered the POD but wasn't comfortable with the design. I was going to build a roll-off as it looked like the best compromise for me. While I could see the advantages of a dome I hadn't found any suitable ones in my price range. I'm subscribed to the POD forum and saw a post that there was a POD review posted on this site. I read it mostly to see if I was wrong about my POD concerns and whether I should reconsider.
Well, I never expected I would find out about another and more suitable dome. I didn't even know the ExploraDome existed before. Based on your review and a bunch of additional research I've done since, the ExploraDome looks to be perfect for me. It's now ordered and on the way.
Without your review I probably would have built my roll-off and been stuck with it. Now I'm going to have something which suits my needs much better. Thanks!
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Snaproll
Post Laureate
   
Reged: 02/20/04
Posts: 3491
Loc: Wisconsin
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Well thanks from Chris and I.
Both products are good, each has their individual strenghts and gremlins. It really comes down to your observing habits as to which meets your needs best.
I too was in the same boat, really wanting an observatory but not being able to afford one. As I write this, I'm in the ED now looking at the moon between broken clouds, listening to Meg Bowles. A dome is good 
Clear skies.
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rodney
domed in NJ
   
Reged: 03/08/05
Posts: 463
Loc: Asbury, NJ
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I finally had a chance to read over the review a few times and think the reviewers did a fantastic job at describing the pros and cons of the products reviewed. Personally I was slated for a POD way back in the early pre-production days. When time passed it allowed me the time to further research my needs and came upon many options. The big boys Sirius, Home Dome, and Observa Dome were out of my price range. The Explora Dome and POD were right in the price range. The Explora Dome won out for the fact that it offered me more square footage for usage (the 10 by 10 building, not the round structure) and more protection from the environment and stray neighbor lights. As many have said before, both products have a viable market it is only a matter of what suits your needs and how comfortable you want to be on a 10 degree night.
Clear skies,
-------------------- My Explora Dome construction is here:
http://www.freewebs.com/rodbo1967/observatoryconstruction.htm
Rodney
13 Truss
C8-NGT
Orion 80mm/F11
Extremely happy owner of an Explora Dome home observatory
and a list of goodies to big for this sig
Edited by rodney (10/23/07 11:37 AM)
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Spoonsize
Vendor/Clothing
   
Reged: 08/27/04
Posts: 2184
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There has been much ED bashing on their POD Yahoo, and I would like to point out two things that may or may not have been covered in your review, but have certainly been hit upon in the yahoo site.
One is that the ED I've got, and it was one of the first, has NEVER leaked.
The second is that where I live we get between 3 and 4 weeks each year with temperatures in the range of minus 20+/- degrees Fahrenheit, and I've NOT experienced any adverse issues whatsoever.
What else? Oh, when it's warm, above 40 degrees, there is about a 5 degree difference between inside and outside that takes about 15 minutes to stabilize after opening the slot.
When it's cold, 40 degrees and lower, there is no difference in temperature. I'm not sure where all the concern about a so called chimney effect came from, other than perhaps someone's pipe dream, but there is none in my ED.
Heat rises of course, so what little body heat that escapes does rise, but there is no more in the ED than there would be if I were standing in a POD, and there is certainly not enough to have any noticeable affect on viewing, nor imaging.
-------------------- Steve Durham
www.margesmonograms.com
(Marge made me do it)
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Snaproll
Post Laureate
   
Reged: 02/20/04
Posts: 3491
Loc: Wisconsin
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Quote:
There has been much ED bashing on their POD Yahoo (site)
The only thing I am personally aware of first hand is from a POD vendor who was PMing Chris and I. Apparently because of his status as a vendor the CN TOS do not allow him to post his questions or comments here. I checked with the CN powers that be and he is correct. Anyone else (nonvendor) can post his questions. Chris and I have offered to post and answer his questions if nothing else. He is supposed to get the list to Chris. So far I don't think he has done so.
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Chris Schroeder
Postmaster
   
Reged: 12/11/04
Posts: 5098
Loc: N.E. WI Sky Glow
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Thanks to all for your comments, as to ED bashing going on at the POD yahoo site, sorry I have seen only one poster that actually was bashing the ED. I seen a few the other way by the way, but it's mostly pro POD as I'm sure is the case at the ED website.
-------------------- Chris
Mallincam Color Hyper Plus
10" DSH with SC DSC, CPC 800 XLT
M102ED S.V., ZS 80FD 10th Anniv, ZS 66SD, PST
POD XL3 http://POD.SchroederCity.com
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spaceydee
Postmaster
   
Reged: 04/16/04
Posts: 15350
Loc: Where the Kittens Are
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Folks, let's not discuss bashing here, let's discuss the article!
-------------------- Dee
space-scientist
student violinist
Nexstar8i,SV80S,80/9D,FC100,94 Brandon,TMB92SS,GM8
8" f/7 Discovery,12.5" Portaball, PST
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Snaproll
Post Laureate
   
Reged: 02/20/04
Posts: 3491
Loc: Wisconsin
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Hey Steve, thanks for the input:
Quote:
What else? Oh, when it's warm, above 40 degrees, there is about a 5 degree difference between inside and outside that takes about 15 minutes to stabilize after opening the slot.
That concurs with my experience with the WHITE ED. The one thing I want to stress through is that the GREEN one at home gets quite a bit warmer in direct sun. Some of the temps over the summer were like 17 degrees warmer at the OTA level. If it was 90 outside it was 107 inside. The color has a lot to do with it so someone thinking of a green or blue (don’t know about red?) ED should be aware of this.
I also think it worth adding a link to the thread I did when I got my first ED. It details the condition of the dome at arrival as well as the construction process better than what I did in the review. If the link doesn’t work, search for the “ED construction” thread.
http://www.cloudynights.com/ubbthreads/showflat.php?Cat=0&Board=Observatory&Number=1669088&fpart=&PHPSESSID=9aa309cef03c1d4f5e736d5817831d99
I don’t know if the POD vendor has gotten his questions he had to Chris or not but there are a couple I addressed to him in PMs and felt they should be a part of the review feedback.
Apparently there was some confusion about how long it takes to construct a POD or ExploraDome. If it wasn’t clear in the review, there is no doubt both products can be assembled well inside of a day. My assembly took a couple of days because I was in no hurry, had never done it before and I wanted to do things right. I said it takes a couple of weeks to get done ‘noodling around’ with refinements, by that I meant carpeting, lighting, electrical, adjusting the wheels, adding wall insulation. I’m sure the same is true of most POD owners, lights, carpet, solar fans etc.
Another issue he brought up was a picture caption where I said, “SHMBO said the dome has to be invisible and cost nothing” and he wondered if that meant I got a free dome.
That was a a long standing joke from the beginning as I was looking for a dome. “What colors do you have? Does it come in camouflage?”.
No, I am not affiliated in any way with either vendor. I paid full price for the first dome and did receive a discount on the second one. I bought the second one because I could not get a trailer in to pick up the first one with where I had to build it. Dan at Polydome knew I wanted a portable and offered a deal on the second one knowing it would be a good product exposure as well as helping out a customer. I have no doubt that he would offer the same thing to anyone wanting a portable unit that had purchased a previous one.
The other issue he had was about Chris’s statement that in portability “the ED is the champ”, since neither Chris or I have experience transporting a POD.
This is true, we don’t have experience but to date, in spite of inquiries, neither of us have seen/heard/read of anyone transporting a POD to a star party other than beta testers or the vendor.
I think it would be a good idea to start a thread and linking it to this review on portables in general and especially POD if there is field experience with transporting one.
As it stands though, the statistics I gave on transporting the ED are accurate. If anyone would like to follow my thread picking it up at the vendor and taking it to the Nebraska Star Party, here it is.
http://www.cloudynights.com/ubbthreads/showflat.php/Cat/0/Number/1731016/page/0/view/collapsed/sb/5/o/all/fpart/1/vc/1
I don’t think that there are a lot of people taking PODs or EDs on the road. This is not a negative reflection on either product but I think reflects the marketing interest of the buyers; most desire a permanent installation.
I have been highly interested for years at finding a portable observatory for remote imaging. I’ve bought or made other products with varying success but nothing that worked well. Then there was the POD and ED.
As I said in the review, porting an observatory is not a trivial operation. You need to be able to transport three things; one (or more) observers, observing equipment and the observatory. To be able to transport a dome and the observing/imaging equipment pretty much dictates either a trailer or a second vehicle and driver.
From a portability standpoint the new product Chris and I are evaluating, the AstroGazer from Astrogizmos may be superior to both POD and ED in this regard. It is much larger in terms of interior space (10 food diameter) compared to the round building or a straight POD, offers more “head room” (8.5 feet) yet compared to the two is very compact in terms of transport size (three bags) and weight (~140 lbs). Setup time with two people is roughly an hour.
The real advantage I see with this product is that you can get two observers and large gear into one vehicle. Although I haven’t tried it yet, I don’t see why the AstroGazer couldn’t even be rooftop portable.
As far as a rough comparison to the portable ED; the ED is a one person setup that takes 10 minutes but requires a trailer. The AG is best assembled with two people and would take longer but is larger (interior) and much easier (packed) to transport. The only other major difference is that the AG is not ‘lockable’ so the site has to be secure or attended as far as leaving equipment goes.
Chris hasn’t seen the AG yet but we are getting together tomorrow, so perhaps he can weigh in on his thoughts of comparing the POD and AG.
If interested in my initial impressions of the product you can follow this thread.
http://www.cloudynights.com/ubbthreads/showflat.php?Cat=0&Board=Observatory&Number=1892486&fpart=&PHPSESSID=9aa309cef03c1d4f5e736d5817831d99
Having a portable observatory is wonderful. Even if most PODs and ED’s are permanent mounts, once people discover how wonderful a dome is may want to consider having one of these AstroGazers in a closet for star parties or remote sites.
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Veridian
sage
   
Reged: 07/17/06
Posts: 478
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I want to thank you two for going through all of the work to write this review. It was quite thorough.
One question that came to mind was the expected durability of the materials used in the construction, in regards to UV deterioration.
Now,, since reading this review, I have been trying to keep the idea out of my mind of installing one of these on a second story extension of the house which has a flat roof. 
Thanks again, Mark J.D.
[p.s. Some time ago I had read on a home repair website,, "the number one rule for roofing is: never, never, ever install a flat roof on a house"]
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Chris Schroeder
Postmaster
   
Reged: 12/11/04
Posts: 5098
Loc: N.E. WI Sky Glow
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Thank you Mark for your kind remarks about our review. As to the longevity and durability of the material used for the POD and dome of the ED, HDPE is used in many applications that take abuse. Play grounds and calf shelters to name a couple, they are used everywhere and in all kinds of weather and have stood up well.
-------------------- Chris
Mallincam Color Hyper Plus
10" DSH with SC DSC, CPC 800 XLT
M102ED S.V., ZS 80FD 10th Anniv, ZS 66SD, PST
POD XL3 http://POD.SchroederCity.com
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