Author Topic: Tak mounts  (Read 2410 times)

Adam Martin

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Tak mounts
« on: December 29, 2017, 12:22:44 AM »
Hey guys, sorry for this new post, but there's something that is confusing me, and maybe you can clarify my doubts.
Ive been thinking on buying a new mount for my Tak FSQ 106 ED , that i use on my Celestron Avx , and on top of my list, is the Tak EM 200 , but, i looked for a new one, wich is expensive, from my standards, and mostly, ive been looking on used market, and here's my question: there are several used EM 200 mounts on the market, in excellent condition, but, why there are so many? Is there a reason for this? Is it end of line of this mount? Problems with it?
What do you think? 😕



bronedproudem

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Re: Tak mounts
« Reply #1 on: December 29, 2017, 03:14:24 AM »
There were no EM200s available for many months on the used market when I bought mine. I waited half a year to find one. Strangely, at the time, there were multiple NJPs available, but those were too big for my needs.

Items seem to appear on the used market in clusters (whether that is statistically true or similar to the "buses arrive in threes" illusion, I don't know). Take advantage of it when the item you are looking for pops up!

jumphindnore

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Re: Tak mounts
« Reply #2 on: December 29, 2017, 11:26:42 AM »
Not all Takahashi EM 200s are the same. The USD model differs from the Temma Jr, and from the Temma 2 and Temma 2M. Pick the one that best fills your needs. They're beautiful machines!

Jwemes (NJP and EM200 Temma2)

Jacob Hernandez

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Re: Tak mounts
« Reply #3 on: December 30, 2017, 08:36:36 AM »
Hummm, now you got me thinking....
I know that there is different options for ths mount, but ive also heard that it's going to be replaced, in fact it was supposed to be replaced by the end of 2015. Dont know...

Cesar Rojas

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Re: Tak mounts
« Reply #4 on: January 01, 2018, 08:00:46 AM »
They have been on the market in an, almost, unchanged condition since 1989. As we've discussed here before, the mount performs well but is decidedly low-tech and people do "upgrade" to mounts that have more features. Unless buying one new is important to you from a philosophical standpoint, I'd firmly suggest buying a Takahashi mount used from a reputable seller. As Jwemes says, there are generational differences in the Temma electronics as well as the motors. This primarily affects slew speed (and associated input voltage) but it also affects the type of auto-guiding relay cable used (see if your software supports pulse-guide so you can skip the relay cable entirely), hand controller style and also the ability to shut down the tracking motors.

Although they work fine, it is probably better to avoid an EM-200 "Jr." Temma model if you have other options available for the same price. The Jr. model slews even slower and does not allow the tracking motor to be shut off in case some sort of "park" or "warm stop" feature is important at the end of an imaging run. The SkyX, for example, "rewinds" the Temma Jr. every few minutes to create the illusion of stopping the mount.

There is a new "Z" model arriving soon but it appears to be an "M" model with yet another auto-guide cable design and dark paint on the control panel that doesn't match the mount.

Logan Budd

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Re: Tak mounts
« Reply #5 on: January 04, 2018, 06:09:37 AM »
Another thing to keep in mind is that on the older models the polar scope expires in 2015. I am not sure if that is upgradeable but it would be something to confirm with TNR before buying a used Tak mount.

Michael Consumers

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Re: Tak mounts
« Reply #6 on: January 09, 2018, 01:53:41 AM »
I don't think you'd go seriously wrong with this mount if your frame of reference is the Celestron series. It's a definite step up. Just know that you bring your own control (iPad, smartphone, computer) to the party.

I imaged on one for five years. I'm about to move up the next notch to the Mach 1/10 Micron level, but that's how far you have to go to get past the EM-200 IMO. The essential goodness of the mount (low, smooth PE) is not going to diminish over time.

David Allen

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Re: Tak mounts
« Reply #7 on: January 10, 2018, 10:44:05 PM »
Yeah, my point exactly! I like the mount, never used it, but i ear all good things about it. On the other hand, one says to be carefull with the choosen version, other tells that it going to be replaced, in the end , i really dont know.
I have no experience with it, nor i have ever saw one, so, how good is it? How long can do an exposure with it, without being guided? And guided? Is it easy to align, or you have to learn a lot to start working properly with it? The lack of digital features, like the most recent mounts, is a problem, or not?

proporasat

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Re: Tak mounts
« Reply #8 on: January 11, 2018, 01:41:36 AM »
There have been a number of theads on CN regarding usage. The Tak mounts are very quick and simple to align and use but you will use the polar alignment telescope. On the EM-200, the PAS is essentially an analog computer. You will need to know your longitude and must also see Polaris. Once you get the hang of it, you'll be aligned in less than 5 minutes. If you need some sort of super-duper alignment for long focal length narrow-band, or some such, then you'll probably need to drift align.

Takahashi mounts do not have periodic error correction so, unless you are shooting very fast & wide-field, you will not be shooting unguided. Guided imaging is only limited by the quality of your alignment and the rest of your system.

As far as personal or subjective things like "good enough" or "problem or not", maybe you could tell us what you want to do rather than have us try to guess?

Also - it's the nature of internet forums that you will get varying quality of advice as well as difference of opinion. You'll just have to do your research and look for any consensus between actual owners. Then figure out if those comments are applicable to your situation.

schemsucopost

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Re: Tak mounts
« Reply #9 on: January 11, 2018, 04:05:54 AM »
Well, currently, im using the Avx mount, guided with Phd, through the Orion SSAG, Im doing normal exposures, the type of  300"X 10 lights, plus darks, bias and flats. The idea, is to use my modified Canon 450D , mono, and try narrow band, as i already have filters for that, and all the required acessories. With the Avx mount, probably i can do it, but, i have yet to try.

Pablo Abreu

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Re: Tak mounts
« Reply #10 on: January 11, 2018, 11:09:11 AM »
I love my Tak, but it is decidedly low tech. It is only an EM11 Temma2 Jr but the periodic error is 7" p-p. I would suspect an EM200 would be even better.

If you can get an EM200 Temma2 (even a Jr) forunder $3500 then I'd say go for it. Polar scope be ****, you can use the Polar Finder app on Android to position Polaris properly.

The problem with the EM200 is that, new, it costs more than an Astro-Physics Mach1, which is a superior mount.

tranasrixpans

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Re: Tak mounts
« Reply #11 on: January 11, 2018, 02:18:53 PM »
OK, in that case, the EM-200 would probably be a sensible mount.

I have no idea what your focal length is, but if you were trying to do, like, 30 minute exposures at a high magnification then you might need a better polar alignment than the built-in PAS can provide. If you were looking to permanently mount the EM-200 then you wouldn't get frequent benefit from the fast-to-use PAS and might prefer to have other features - like tracking hard-stops or through-the-mount cabling. If you image with a really slow telescope then you might benefit from a mount with PEC. If you were mostly a visual person or wanted to image without a computer then you'd probably be better served with a mount that comes with an intelligent hand controller(*).

In my opinion, the Takahashi mounts are excellent field mounts for imaging with fast/medium telescopes. The more you get away from that profile, the more you might want features found elsewhere. I use mine for 5 minute LRGB and 10 or 15 minute NB imaging with a QSI-690 on a 580mm focal length refractor. All guided, of course. I have owned my EM-200 for about 13 years and just bought an EM-11 because I liked the EM-200 so much. Having said that, I am planning to install my EM-200 onto a backyard pier, but I would probably not have bought a brand-new EM-200 for that purpose. I certainly wouldn't use a Takahashi for truly remote unattended operation either. As my esteemed friend Orlyandico noted, you could buy an outfitted Mach1 for that money (or a MyT).

I would point out that the EM-200 and the EM-11 have quite different PASs. The EM-200 needs for you to know the longitude and the current time & date. It's fairly simple to use. The EM-11 requires that you know, or determine, the hour angle of Polaris. Software can help a lot with the EM-11, but the EM-200 is easy enough with a smidge of preparation.

(*) There have been Takahashi-sold PDAs that served as intelligent hand controllers and you can, of course, use a tablet or smart phone.

Kenneth Naim

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Re: Tak mounts
« Reply #12 on: January 11, 2018, 05:40:40 PM »
Thanks for the information Ken, very useful . As you can see on my posts, i use a FSQ 106, that is a F/5 scope, fast for AP. Strangely for me, the EM 200 mount, new, is cheaper than the Mach1 or the MyT. Dont know about used mounts, maybe its possible to found one of those cheaper than the EM.

Craig Olsen

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Re: Tak mounts
« Reply #13 on: January 13, 2018, 12:57:21 AM »
Yes. Good point. Prices are different around the world and might vary with promotions. I also forgot about your OTA (Duh......)

Jeff Swan

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Re: Tak mounts
« Reply #14 on: January 14, 2018, 05:57:58 AM »
Eh eh eh eh