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I recently purchased a Meade AR5 refractor OTA only (5" (127mm) lens, 1180mm
focal length). I was hoping to use a tripod and mount that I already had until I could do better, but it is just too flimsy. The scope is about 1.2 meters long, and weighs 15 pounds (just under 8 kg). My experience with telescopes is limited to a 60mm refractor and a 114mm newtonian. So this is new ground (or sky) for me. I am not sure what would be the minimum requirement for a mount and tripod for this scope. Most of the mounts I see on the web don't give a good description of the size scope they will handle. Some do, but they seem to be the exception. I have thought about buying a wooden surveyer's tripod and building a modified dobsonian style mount on top, using Meade DS motors for tracking, but I am also considering just buying a commercially-built motorized mount and being done with it. Tracking is a requirement for me, preferably 2-axis. So far I see CG-5 mounts from various companies that look OK, and Orion has the Skyview Pro and Astroview (the Astroview looks a little light). Their Atlas ($800) is out of my budget for now. I am used to using Meade DS-type AltAz mounts and a small dob, but it looks to me that with the exception of dobs, all the heavy-duty mounts are EQ. I have also heard that the LXD-55 mount that normally comes with the Meade AR5 OTA is on the light side. GOTO would be nice, but I am not going to sacrifice sturdiness for that. I need to keep the price down at this time. Possibly the ability to add that in the future would be a consideration. Any suggestions would be appreciated. I have searched the web till my eyes hurt and cannot seem to find a reasonably priced mount that will hold my scope well. Maybe that doesn't exist......... -- Dan Braasch |
#2
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Any suggestions would be appreciated. I have searched the web till my eyes
hurt and cannot seem to find a reasonably priced mount that will hold my scope well. Maybe that doesn't exist......... -- Dan Braasch I think your most economical choice is to purchase a used CG-5 on astromart. Also at some point I believe Anacortes was selling CG-5s for $250 and then of course at least one drive is required as well if you want tracking. The CG-4 /Orion EQ-3 may handle the scope if you upgrade the tripod, I found that my EQ-3 with the 120mm F8.3 Orion refractor was too vibration prone with the stock tripod. Upgrading the tripod made a huge difference. One problem with such refractors on EQ mounts is that the legs have to close to full extension so that when viewing near the zenith it is possible to see anything. even with the legs extended, kneeling in the dirt is not that comfy. Jon |
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Thanks for the reply.
I thought the CG-5 might be a decent choice for an EQ. I would really prefer an alt/az mount, and still may build one over buying an EQ, but it's nice to know a CG-5 will handle my scope if I choose to buy. I need to put a design down on paper to see what it will take to build. I have seen many designs on the web and have taken something from many of them. I just don't have a machine shop at my disposal. I will have to work with wood on this project. I know what you mean about being on your knees with a scope like this. I already have the knee cushion in my accessory bag. When I put the scope on my small alt/az mount to test it I was real low to the ground. Maybe I should build a roller "cot" with adjustable height head rest to lay on. Kind of like a "Craftmatic adjustable bed" for astronomy. Hmmmm. maybe there's a market for that?????? OK, I'm just kidding on that one..... I fall asleep as soon as I get horizontal. I'd never get any viewing in. :-) -- Dan Braasch "Jon Isaacs" wrote in message ... Any suggestions would be appreciated. I have searched the web till my eyes hurt and cannot seem to find a reasonably priced mount that will hold my scope well. Maybe that doesn't exist......... -- Dan Braasch I think your most economical choice is to purchase a used CG-5 on astromart. Also at some point I believe Anacortes was selling CG-5s for $250 and then of course at least one drive is required as well if you want tracking. The CG-4 /Orion EQ-3 may handle the scope if you upgrade the tripod, I found that my EQ-3 with the 120mm F8.3 Orion refractor was too vibration prone with the stock tripod. Upgrading the tripod made a huge difference. One problem with such refractors on EQ mounts is that the legs have to close to full extension so that when viewing near the zenith it is possible to see anything. even with the legs extended, kneeling in the dirt is not that comfy. Jon |
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