Timber
professor emeritus
Reged: 11/08/08
Loc: SW foothills of Mt. St. Helens
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AP-1200 or Tak EM-500
#2987608 - 03/16/09 07:18 PM
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Nik Hodges has a thread going on the AP900 vs the EM400, this thread is very close to the same, but the EM500 is a slightly different animal than the EM400.
Are the comments being made in Nic's thread also the same for the next level of mount?
One seemingly different spec are the rated capacities; the AP at 140# and the Tak at 89#, however the powers to be at Texas Nautical assure me the Tak can handle 120#.
Any significant difference in these?
Richard
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gordianknot
professor emeritus
Reged: 09/04/05
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2988236 - 03/17/09 02:56 AM
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I don't claim to be world's expert on the EM500, but if it was me, it would be the AP-1200. The only real advantage the Tak mounts seem to have over APs is the polar scope which by all accounts is incredible. Otherwise, they are more expensive, require 24 V for full speed slewing, don't have a hand controller, don't have PEC and have worse documentation. Don't get me wrong, I'd love to have either of these mounts, but if I could choose, it would be the AP.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2988573 - 03/17/09 10:05 AM
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TNR's website says it's rated at 89lbs but "can reasonably handle 120lbs". Given that, it sounds to me like the AP1200 will handle loads 100lbs and over better.
If it were me, I'd go with the AP1200. The main advantage of the EM500 is the polar scope, but I don't know how easy the EM500 is to set up. My NJP is about as heavy a mount that I'd want to carry out and set up every night. Assuming the EM500 weighs much more, the advantage of the polar scope wanes a bit for me. If you do set up and tear down often, you can align the AP1200 fairly quickly (~20 minutes) with Polar Align Max or PemPro (although they are more of a hassle).
Also, when you get to these class mounts, you are usually going to be using pretty long FLs in which case having PEC does help.
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: Dean]
#2988633 - 03/17/09 10:43 AM
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I own a Tak EM10 and it is a fine piece of gear. That said, I just don't think the EM500 is in the same league as the newer mounts like the AP1200 or the Paramount. Takahashi is stuck in a time warp, using dated methods and technologies. For the price of an EM500, you can get an AP1200 or a Paramount ME that outperform the Tak in every measure except one -- they don't come with the world's best polar alignment scope.
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HunterofPhotons
scholastic sledgehammer
Reged: 04/26/08
Loc: Rhode Island, USA
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2988712 - 03/17/09 11:36 AM
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I would second the comments of Gordianknot. I would add that if you do imaging, the ability of the AP 1200 to cruise hours past the meridian is a big plus.
dan
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: HunterofPhotons]
#2988726 - 03/17/09 11:47 AM
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I would second the comments of Gordianknot. I would add that if you do imaging, the ability of the AP 1200 to cruise hours past the meridian is a big plus.
dan
A "big plus"? Better hope the clutch gives way in the collision before the CCD camera or OTA... 
The lack of hard limits on the AP1200 is a double-edged sword. People sometimes make errors or forget to turn off equipment. IMO meridian flip is a minor inconvenience compared to the potential for expensive damage to equipment, the observatory, or both. In a remote or unattended observatory, lack of hard limits is just plain dumb.
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Strgazr27
  
Reged: 10/04/04
Loc: StonyHill Observatory
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Re: AP-1200 or Tak EM-500
[Re: HunterofPhotons]
#2988882 - 03/17/09 01:30 PM
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I would add that if you do imaging, the ability of the AP 1200 to cruise hours past the meridian is a big plus.
So does the TAK. The big issue is where is your equipment pointed. In certain areas of the sky the ability to image past the meridian can be useless. Does that mean that the Paramount (Which needs to do a meridian flip) is not as good? I think too much emphasis is put on that selling point. JMO's
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Strgazr27
  
Reged: 10/04/04
Loc: StonyHill Observatory
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2988888 - 03/17/09 01:34 PM
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I own a Tak EM10 and it is a fine piece of gear. That said, I just don't think the EM500 is in the same league as the newer mounts like the AP1200 or the Paramount. Takahashi is stuck in a time warp, using dated methods and technologies. For the price of an EM500, you can get an AP1200 or a Paramount ME that outperform the Tak in every measure except one -- they don't come with the world's best polar alignment scope.
Jim,
Although TAK does still do thigns the "Old Way" there is something to be said for that. I'm sure the EM500 could go head to head with the 1200 from a mechanical and tracking standpoint under almost any condition. Where TAK needs to update is in their controller and software. But in reality, most people who are going to purchase an EM500 or an AP1200 will 99% of the time be permanently mounted and most likely controlling the mount via software anyway so the poor HC'er/Software is a non issue.
JM2Pennies
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Timber
professor emeritus
Reged: 11/08/08
Loc: SW foothills of Mt. St. Helens
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2988892 - 03/17/09 01:38 PM
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Quote:
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I would second the comments of Gordianknot. I would add that if you do imaging, the ability of the AP 1200 to cruise hours past the meridian is a big plus.
dan
A "big plus"? Better hope the clutch gives way in the collision before the CCD camera or OTA... 
The lack of hard limits on the AP1200 is a double-edged sword. People sometimes make errors or forget to turn off equipment. IMO meridian flip is a minor inconvenience compared to the potential for expensive damage to equipment, the observatory, or both. In a remote or unattended observatory, lack of hard limits is just plain dumb.
Is there a "fix" for the lack of hard limits?
Richard
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: Strgazr27]
#2988964 - 03/17/09 02:26 PM
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Jim,
Although TAK does still do thigns the "Old Way" there is something to be said for that. I'm sure the EM500 could go head to head with the 1200 from a mechanical and tracking standpoint under almost any condition. Where TAK needs to update is in their controller and software. But in reality, most people who are going to purchase an EM500 or an AP1200 will 99% of the time be permanently mounted and most likely controlling the mount via software anyway so the poor HC'er/Software is a non issue.
JM2Pennies
Look at the size of the bearings used on the AP1200 or the Paramount and compare them to same on the EM500. Similarly, look at the size of the base and the latitude adjustment mechanism. Tak just scaled-up the design used in its smaller, portable mounts and the result is less than optimal. They are constrained by the investment casting process used to make the housings, and the quaint notion that polar alignment requires a telescope that looks out a hole in the polar axis.
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2988968 - 03/17/09 02:31 PM
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Is there a "fix" for the lack of hard limits? Richard
AP offers homing and hard limits as options on its 3600 series mount, but I don't know if the same options are available for the 1200. These capabilities are standard on the Paramount.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2988974 - 03/17/09 02:33 PM
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IMO meridian flip is a minor inconvenience compared to the potential for expensive damage to equipment, the observatory, or both. In a remote or unattended observatory, lack of hard limits is just plain dumb.
If you're operating remotely/unattended then chances are you are using an automation software package like CCDAP in which case you'll set up the the software invoke a flip when needed. Of course there's the possibility you'll forget or set it improperly.
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Strgazr27
  
Reged: 10/04/04
Loc: StonyHill Observatory
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2988978 - 03/17/09 02:37 PM
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Jim,
The AP1200 is a scaled up 900 so I fail to see what relevance the EM being scaled up has to do with it. These images here show poor performance? TAK mounts have long been some of the best performers money can buy. I won't argue the AP's are works of machining artistry and impeccable attention to detail but does that make them that much better, all else being equal?
I'm not arguing but to say the 1200 is a far superior mount to the EM 500 is a stretch I think. That's all
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: Dean]
#2988980 - 03/17/09 02:38 PM
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If you're operating remotely/unattended then chances are you are using an automation software package like CCDAP in which case you'll set up the the software invoke a flip when needed. Of course there's the possibility you'll forget or set it improperly.
Murphy's Law is the prime directive in my observatory. I need all the backup help (software + hardware) I can get!
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2988993 - 03/17/09 02:48 PM
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(...) and the quaint notion that polar alignment requires a telescope that looks out a hole in the polar axis.
AP has the same quaint notion as well.
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GJJim
scholastic sledgehammer
Reged: 09/09/06
Loc: Western CO
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Re: AP-1200 or Tak EM-500
[Re: Strgazr27]
#2988995 - 03/17/09 02:50 PM
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Quote:
Jim,
The AP1200 is a scaled up 900 so I fail to see what relevance the EM being scaled up has to do with it. These images here show poor performance? TAK mounts have long been some of the best performers money can buy. I won't argue the AP's are works of machining artistry and impeccable attention to detail but does that make them that much better, all else being equal?
I'm not arguing but to say the 1200 is a far superior mount to the EM 500 is a stretch I think. That's all
The EM500 costs quite a bit more than the AP1200, yet its capacity is lower, and IMO its mechanics are inferior. A better direct comparison is the Paramount ME which sells for the same price as the EM500. In this comparison, the Tak is inferior by every measure.
All of these mounts can be used with good results, and none are poor quality. The Tak design philosophy is showing its age compared to the more modern and capable mounts available today.
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lineman_16735
Tak-o-holic
Reged: 12/04/04
Loc: Central PA
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Re: AP-1200 or Tak EM-500
[Re: Dean]
#2989017 - 03/17/09 03:04 PM
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These mounts in my opinion are in different classes. The 500 is not nearly as robust as the 1200. I would go as far as saying the EM-500 is closer to the AP 900 than the AP 1200. FWIW you can set software controlled limits on the AP mounts.
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Jaxdialation
Post Laureate
   
Reged: 04/01/07
Loc: Northeast, FL
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Re: AP-1200 or Tak EM-500
[Re: lineman_16735]
#2989033 - 03/17/09 03:15 PM Attachment (56 downloads)
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I think the Tak 500 is a closed loop system. That is kind of neat. I think all the stuff like casting and imaging past the meridian, and even weight wash out between these two mounts, and you are left with capacity being higher in the AP and setup being faster with the Tak. And of course, cost.
I had a similar decision to make last year, and I decided to go for the capacity of an AP1200, which I roll out on a JMI Wheely Bar. A Wheely Bar will take care of the weight problem.
Here is a two picture image of my set up. Total set up time is about 30 minutes including PA with PemPro. I would bet a Tak 500 could be done in 10-15 minutes.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2989041 - 03/17/09 03:23 PM
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If you're operating remotely/unattended then chances are you are using an automation software package like CCDAP in which case you'll set up the the software invoke a flip when needed. Of course there's the possibility you'll forget or set it improperly.
Murphy's Law is the prime directive in my observatory. I need all the backup help (software + hardware) I can get!
I use an alarm clock 
It usually works, but sometimes I don't. I have had the CCD run into the pier a time or two - the clutches slipped and no damage done.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2989222 - 03/17/09 05:10 PM
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The EM500 costs quite a bit more than the AP1200 (...)
In the US true, but I suspect it's the other way around in Japan and much of Asia. You can't ship something that big and heavy half way around the world (literally) for nothing!
Off the top of my head I can think of maybe a dozen or so people with an AP1200, but I draw a blank when I try and think of who has an EM500 (I do know a few with EM400s though). However, most of the people I know about in this hobby live in the west but very few live in Asia.
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EddWen
scholastic sledgehammer
Reged: 04/26/08
Loc: Here or There
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2989302 - 03/17/09 06:04 PM
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Both the A-P 900 and A-P 1200 have clutches which prevent damage if someone does something dumb, like forgetting to turn the power off after a viewing session (how would I know that?). In fact, you might be better off if the equipment does move into something and stops. I've heard that someone forgot the power and wrapped up and damaged the cables.
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Strgazr27
  
Reged: 10/04/04
Loc: StonyHill Observatory
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Re: AP-1200 or Tak EM-500
[Re: GJJim]
#2989699 - 03/17/09 10:44 PM
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The EM500 costs quite a bit more than the AP1200, yet its capacity is lower, and IMO its mechanics are inferior
Last year at NEAF Steve Roffo had his 500/FRC300 Combo setup. He routinely images with 115 lbs of equipment at what most would consider "Silly" focal lengths. When I had my NJP I messed around 1 night and put about 90 lbs on it and you know what? The tracking was no worse than the usual 50 lb load I would usually run. TAK are notoriously under rated, a known fact. Are they inferior?? To each his own they say.
And with that I'm done
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Jaxdialation
Post Laureate
   
Reged: 04/01/07
Loc: Northeast, FL
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Re: AP-1200 or Tak EM-500
[Re: Strgazr27]
#2989914 - 03/18/09 01:23 AM
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Where I really notice the capacity differences between my 400 and 1200 is when it is gusty, when my load can't be balanced closely, and after Meridian Flips.
The last two are pretty much a way of life with automated and roll-out (no obs.) imaging. In return for my "over mounting", I feel like I get more imaging time, longer exposures, and fewer rejects. Since my skills are weak, I need all the help I can get 
Other people may have other considerations.
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Mike Clemens
Frozen to Eyepiece
   
Reged: 11/26/05
Loc: Alaska, USA
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Re: AP-1200 or Tak EM-500
[Re: Jaxdialation]
#2989936 - 03/18/09 01:55 AM
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Isn't the Tak being "left behind"? I am pretty sure I can download controller updates for my AP controller off the web. Ray Gralak is making a new AP mount control center app which looks excellent. Gralak's PemPro can practically eliminate any periodic error. The ASCOM stuff is being kept current. Is this all true for the Tak side as well?
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Jaxdialation
Post Laureate
   
Reged: 04/01/07
Loc: Northeast, FL
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Re: AP-1200 or Tak EM-500
[Re: Mike Clemens]
#2990276 - 03/18/09 10:12 AM
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There does seem to be more energy behind advancing AP mounts. AP themselves improves them all the time mechanically. Frequently the upgrades are field-installable for current owners. The firmware gets tweaked, then, as you said the software of all sorts seems to advance regularly.
Tak has an ASCOM driver, which does get tweaked, but that's about it.
With my AP I get a warm fuzzy feeling regarding support. With the Tak, I worry a bit. But they are both reliable.
I'm not Joe the Plumber, but the AP is made in the good 'ole USA too. In some respects it is a shinning example of what we can do with a little passion for excellence and the intellectual where with all to execute it.
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tim53
Postmaster
   
Reged: 12/17/04
Loc: Highland Park, CA
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Re: AP-1200 or Tak EM-500
[Re: Jaxdialation]
#2990362 - 03/18/09 11:01 AM Attachment (38 downloads)
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I have an EM-10 and NJP, and last summer had the chance to pick up a used non-goto EM500 for $4K, so I snatched it as fast as I could.
I don't have any experience with the AP mounts, just comparing the Taks, so take that for what it's worth.
First, since I had no manual and I was on vacation at the time, I stupidly thought I could use my NJP's 24V inverter to run the EM-500, but since it's not 24V, I fried an IC on the EM-500. No worries, I thought, since I planned to upgrade it to Temma-II when I got home. But that turned out to be twice what was originally estimated by TNR to do, so I went with a Sidereal Technology servo kit instead (for about $800). Works GREAT now (and was surprisingly easy to do, and completely reversible if necessary).
One thing that surprised me is that the EM-500 isn't much harder to set up than the NJP, thought it's quite a bit heavier. Mine has the spun-cast pier, which is really heavy, and probably the primary reason I don't set the mount up as often as I would like.
But the EQ head isn't hard to set up. Maybe about the same as the NJP. I think that this is because it's smoother, so it doesn't hurt the ribs so much to cuddle it while moving it from my shop to the pier. The NJP is all angles and protrusions.
So far, I've only had my 12.5" f/23 Cassegrain on the EM500
It weighs about 45 or 50 pounds (I've never weighed it), so it's far from loading the mount. I'm hoping to piggyback a 6" f/10 Jaegers and maybe an edmunt 3" f/15 on it with no ill effects someday, but not until I've got an observatory enclosure for it.
Next to moving that pier, putting the OTA on the Cassidy saddle at head height is the lest fun part of the job - but that would be true with any mount.
Polar alignment is easier than for the NJP, because the head can be rotated on the pier through 360 degrees, so the only pier orientation you might want to worry about is getting one leg about north (for stability). Takes no more than a few minutes to polar align and get to viewing or imaging.
Tracking is fabulous, and I doubt I'll miss PEC with a 3" PE and autoguiding any more than I do with the EM-10 and NJP.
The Sidereal Tech goto kit has a bunch of cool features that I haven't had the chance to try out yet, including their PointXP and spiral search routines. I saved money and bought the tethered hand controller, though they do have a wireless option.
-Tim.
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Timber
professor emeritus
Reged: 11/08/08
Loc: SW foothills of Mt. St. Helens
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Re: AP-1200 or Tak EM-500
[Re: Dean]
#2992927 - 03/19/09 04:37 PM
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Thanks all for the great info
"The EM500 costs quite a bit more than the AP1200 (...)"
FWIW
The cost of a new EM-500 is almost identical to the cost of a new AP 1200, and no wait
Richard
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LLEEGE
True Blue
   
Reged: 03/03/05
Loc: Cloud-chester,NY
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2993078 - 03/19/09 06:23 PM
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Thanks all for the great info
"The EM500 costs quite a bit more than the AP1200 (...)"
FWIW
The cost of a new EM-500 is almost identical to the cost of a new AP 1200, and no wait
Richard
IDK, $2500 difference plus shipping? That's quite a bit to me.
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David Pavlich
Transmographied
   
Reged: 05/18/05
Loc: Mandeville, LA USA
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Re: AP-1200 or Tak EM-500
[Re: LLEEGE]
#2993290 - 03/19/09 08:18 PM
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For those that bought a brand new 1200, how much does it cost after you get all the stuff that allows you to actually use it? If I understand correctly, when you buy that mount, that's what you get...the mount with nothing on it. I believe that there's other stuff that drives the cost up a bit, yes?
David
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Aquatone
sage
Reged: 03/23/06
Loc: Moraga, CA (Bay Area)
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Re: AP-1200 or Tak EM-500
[Re: David Pavlich]
#2993520 - 03/19/09 10:44 PM
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The extra costs include the counter weights (between $110 and $190 each) polar scope ($215) and rotating pier adapter ($295) The telescope mounting plate is extra also of course. (Say $100 to $200 approx) By far the most expensive additional item I purchased was a 10" ATS pier but you would not get a pier with the EM-500 either.
Chris
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DeanS
Carpal Tunnel
   
Reged: 07/12/05
Loc: Central Kentucky
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Re: AP-1200 or Tak EM-500
[Re: Aquatone]
#2993529 - 03/19/09 10:48 PM
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That about covers it. If you get the AP pier then you do not need the rotating pier adapter since the pier has an adapter on it, although not rotating but it works fine.
i got a parallex pier for about the same $$ as the AP.
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JerryWise
Postmaster
   
Reged: 12/26/03
Loc: Lexington, SC
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Re: AP-1200 or Tak EM-500
[Re: DeanS]
#2993990 - 03/20/09 09:05 AM
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I'm pretty much a Tak fan (see sig.). I put a lot of thought into mounts over the last few years. The one determining factor for me in selecting a mount was imaging across the Meridian. While normally it is assumed this means starting the session with the mount "looking" East and tracking West with the scopes hitting the pier after passing Meridian. The AP mounts will let you setup with the mount "looking" West and backup over the Meridian to image through it. Something you can't do with hard stops. And the AP mounts let you do it using GOTO by setting a simple keypad parameter. With this you can track 2 hours through the thinnest part of the atmosphere. Very important in poor seeing areas.
If you forget what planet you are on and let the AP track into the pier the clutches slip and nothing gets hurt (in my experience forgetting 5 or so times). Hasn't hurt the mount or the equipment. The knobs on the clutches are designed to hurt your fingers before you can tighten enough to hurt the mount or equipment.
How does the AP-1200 compare to the NJP after using both for a couple years? These are the important points to me:
NJP positives:
1. Tracks perfectly
2. Capacity is underrated
3. Perfect polar scope. Still best to drift align for long exposures.
NJP negatives:
1. No handbox and GOTO
2. Threaded rod counterweight system yucky and CWs rust
3. Slews slower than a big tax refund. You have to see it to believe.
4. Tak 24v power supply designed with significant safety exposure (bare 110v wires).
5. Never autoguide with the slewing switch in "turtle" position. (The mount switch box has two slewing speeds, turtle and dead.) Start autoguiding in turtle and you lose the object alignment as the mount runs away. You must autoguide in "dead" switch position (x1 sidereal). With no GOTO to reacquire the object this really stinks.
6. Price. The build quality is up there but the automation is non-existent. Yes, you can compensate with "theSky6" and computer. No comparison to the extra features and GOTO built in to the well thought out AP hand controller.
AP-1200 positives:
1. Tracks perfectly
2. Capacity is underrated
3. Good polar scope. Still best to drift align for long exposures. If you are seriously playing in this league, optical alignment won't cut it for either mount.
4. Awesome GOTO with almost no setup after it is aligned. Find a star, hit sync and let her rip. When it doesn't work perfectly look in the manual where Roland tells you why (orthogonal mismatch).
5. Everything works with it. Plates, software, OEM CWs, etc.
6. Serious solid and well thought out construction by people that really care about Astronomy. That company is in the game for Astronomy and the customer. One of the few not in it with profit as the primary motivation. Most any product they make can be sold for more than you paid for it the day after you get it. Hello.... expensive, yet cheap and under priced for what you get.
7. Most of all, I never notice the mount anymore. It knows more about what I need than I do, does it and gets out of the way.
AP-1200 Negatives:
1. Availability
2. Trying to think of more......
So yep, I love my Takahashi equipment. Those scopes are awesome and the NJP was fine. But the AP-1200 is, to me, in a different class.
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lineman_16735
Tak-o-holic
Reged: 12/04/04
Loc: Central PA
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Re: AP-1200 or Tak EM-500
[Re: JerryWise]
#2994941 - 03/20/09 06:44 PM
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Well said Jerry. These are my feelings as well. I went from an NJP to a AP 900 though.
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tim53
Postmaster
   
Reged: 12/17/04
Loc: Highland Park, CA
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Re: AP-1200 or Tak EM-500
[Re: lineman_16735]
#2996490 - 03/21/09 03:23 PM
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The NJP is a smaller mount than the AP1200.
There is a goto handbox available for Tak mounts, but I don't own one.
Also, they come with their Pegasus software which, although rather basic, works very well on my 7-yr old HP laptop. I just resync on a bright star near my target DSO to deal with imprecise optical axis alignments between my OTAs and the mounts.
Then I also have 3rd-party software like TheSky6 (PC), Voyager 4.5 (Mac and PC), and EquinoX 6 (Mac) that all control the Tak mounts very well.
My NJP came with a Cassidy counterweight shaft, but no weights. Screwing the Tak weights on and off is somewhat of a pain (and noisy if they chatter), but the mount came with 4 of them, and I can deal with that in setting up and tearing down for the savings over replacing them with Cassidy weights.
My NJP is a Temma PC, pre Temma II. While it might not slew at "Meadegrinder" rates, it sounds like a starship going to warp when you hit the button!
There are something like 6 guide speeds, set via button combinations on the handpad. Yes, you do need to remember to switch from slew to guide, but I think I have to do that with my Nexstar GPS as well.
-Tim.
Edited by tim53 (03/21/09 03:24 PM)
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Timber
professor emeritus
Reged: 11/08/08
Loc: SW foothills of Mt. St. Helens
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Re: AP-1200 or Tak EM-500
[Re: LLEEGE]
#2996691 - 03/21/09 05:03 PM
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Quote:
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Thanks all for the great info
"The EM500 costs quite a bit more than the AP1200 (...)"
FWIW
The cost of a new EM-500 is almost identical to the cost of a new AP 1200, and no wait
Richard
IDK, $2500 difference plus shipping? That's quite a bit to me.
You are just shopping at the wrong store, check around. Cost new, difference is $100
However I solved my problem, I just bought a Byers Series II
Richard
Edited by Timber (03/21/09 05:15 PM)
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Jaxdialation
Post Laureate
   
Reged: 04/01/07
Loc: Northeast, FL
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2997002 - 03/21/09 07:44 PM
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Which problem did you solve with the Byers II mount?
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Timber
professor emeritus
Reged: 11/08/08
Loc: SW foothills of Mt. St. Helens
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Re: AP-1200 or Tak EM-500
[Re: Jaxdialation]
#2997027 - 03/21/09 07:57 PM
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Which problem did you solve with the Byers II mount?
My decision of which big mount to buy
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Mike Clemens
Frozen to Eyepiece
   
Reged: 11/26/05
Loc: Alaska, USA
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Re: AP-1200 or Tak EM-500
[Re: Timber]
#2997135 - 03/21/09 09:04 PM
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> I just resync on a bright star near my target DSO to deal >with imprecise optical axis alignments between my OTAs and > the mounts.
I do this with my AP1200. I made a MaxPoint pointing model about a year ago and it has "aged" a bit with the building flexing through the Winter. Still, pretty good and it gets me generally within 3 arcmin on the first goto of the night lately.
During meridian flips lately though I have to do a "3 point turn" with some halfway stars sync'd, or the final target is sometimes too far off to find.
I'll make another pointing model but the skies are clear so infrequently I havent wanted to.
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JerryWise
Postmaster
   
Reged: 12/26/03
Loc: Lexington, SC
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Re: AP-1200 or Tak EM-500
[Re: tim53]
#2997924 - 03/22/09 10:51 AM
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The NJP is a smaller mount than the AP1200. There is a goto handbox available for Tak mounts, but I don't own one.
..........
Tim, this is correct. It is an HP pocket PC with theSky pocket edition on it. Functional but not a dedicated Tak product. I used a Dell Axiom on mine with OK results. Tak hand controller.
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Jeff Young
Post Laureate
   
Reged: 08/04/05
Loc: Ireland
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Re: AP-1200 or Tak EM-500
[Re: JerryWise]
#3000619 - 03/23/09 05:03 PM
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Like Jerry I've got some Tak scopes and some AP mounts, so I guess my bias is clear. On the other hand, I'm visual-only, so that provides a bit of a different slant to it.
I got such a kick out of Jerry's "turtle" and "dead" speed settings that I spit all over my keyboard. You owe me one, dude....
Cheers, -- Jeff.
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JerryWise
Postmaster
   
Reged: 12/26/03
Loc: Lexington, SC
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Re: AP-1200 or Tak EM-500
[Re: Jeff Young]
#3001041 - 03/23/09 08:28 PM
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On the slew speeds, you know of what I speak. Matter fact, you and Dean were the ones that talked me into going all the way to an AP-1200. Thanks again.
On the "owe one", if I could ever get to your country I'd pay you big bucks to walk through that house. (Folks, Jeff is remodeling a timeless classic.)
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tim53
Postmaster
   
Reged: 12/17/04
Loc: Highland Park, CA
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Re: AP-1200 or Tak EM-500
[Re: JerryWise]
#3001114 - 03/23/09 09:20 PM
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Quote:
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The NJP is a smaller mount than the AP1200. There is a goto handbox available for Tak mounts, but I don't own one.
..........
Tim, this is correct. It is an HP pocket PC with theSky pocket edition on it. Functional but not a dedicated Tak product. I used a Dell Axiom on mine with OK results. Tak hand controller.
The one I was referring to is made by Takahashi. It's expensive, and since I use the computer to run a camera or cameras anyway, I haven't felt a need for one.
-Tim.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: tim53]
#3001435 - 03/24/09 12:10 AM
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Quote:
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The NJP is a smaller mount than the AP1200. There is a goto handbox available for Tak mounts, but I don't own one.
..........
Tim, this is correct. It is an HP pocket PC with theSky pocket edition on it. Functional but not a dedicated Tak product. I used a Dell Axiom on mine with OK results. Tak hand controller.
The one I was referring to is made by Takahashi. It's expensive, and since I use the computer to run a camera or cameras anyway, I haven't felt a need for one.
-Tim.
Tak quit making their own hand controller and replaced it with the PDA Jerry mentions.
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Dean
Postmaster
   
Reged: 12/31/04
Loc: Bailey Co Elev 8780 feet
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Re: AP-1200 or Tak EM-500
[Re: JerryWise]
#3001441 - 03/24/09 12:13 AM
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(The mount switch box has two slewing speeds, turtle and dead.)

Hi Jerry - I'll have to remember that one!
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Jeff Young
Post Laureate
   
Reged: 08/04/05
Loc: Ireland
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Re: AP-1200 or Tak EM-500
[Re: JerryWise]
#3002546 - 03/24/09 04:42 PM
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On the "owe one", if I could ever get to your country I'd pay you big bucks to walk through that house. (Folks, Jeff is remodeling a timeless classic.)
Come on over; we'll even put you and the Mrs up for a night or two. (18thC four-poster bed and all.)
There might be a spot of digging in the garden or weeding the flower beds, though.... 
Cheers, -- Jeff
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JerryWise
Postmaster
   
Reged: 12/26/03
Loc: Lexington, SC
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Re: AP-1200 or Tak EM-500
[Re: Jeff Young]
#3003033 - 03/24/09 09:39 PM
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Cool Jeff. One day.
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