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Messages 13308 - 13337 of 13337   Oldest  |  < Older  |  Newer >  |  Newest
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13308
Hi Rob. I've been out of circulation due to a severe case of the flu. Got a mail from the factory this morning regarding a new motor for my MT-3S mount. One...
andrew554495
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Oct 20, 2009
2:12 pm
13309
http://www.telescopes.ru/ Official Website for TAL Scopes, they reply promptly and they do have a sales team that understands English ... From: andrew554495...
Incorrigible
incorrigible...
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Oct 21, 2009
1:47 am
13310
Andy, Have they directed you to a site whereas you can purchase these spare parts. Regards..Rob ... From: andrew554495 <bogershowie@...> Subject:...
rob wood
robertwood8
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Oct 21, 2009
1:47 am
13311
Does anyone know the weight/load capacity of the TAL GEM2RA mount? This mount originally came with their 6" f/8 reflector.  All in all, its been a great...
alexander mallon
scopecrazy
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Oct 21, 2009
1:48 am
13312
I think the TAL GEM2RA is a motorized mount - if so, the optical tube assembly has to be counter balanced by the weigts on the other side of the motor. If...
hwnewton
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Oct 21, 2009
1:57 am
13313
A word of caution to begining astrophotographers. Astrophotography with the 150PM is rather difficult simply because although the mount is motorized, it does...
hwnewton
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Oct 21, 2009
2:24 am
13314
Yes, I agree with hwnewton. Astrophotography is not easy. The problem is not the scope Tal150P but the mount MT3S. Almost all of my photos are 30-45 sec....
jorma mantyla
jorma_mantyla
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Oct 21, 2009
9:09 am
13315
Well, I use the 200K on mine and it carries it easily. I know of someone who uses a 10"F5 Newt on his. I also have the MT-3S mount, which is rated for...
andrew554495
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Oct 23, 2009
9:05 am
13316
No direct site. It's all done 'old school' by emails. Just been quoted 400rubles for a MT-3S motor !!! Sweet. Andy....
andrew554495
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Oct 23, 2009
3:02 pm
13317
I also can use my 200k on my old 2M mount. I use the homemade adapter plate described by Bill Brady. The 200K doesn't even start to strain the mount. The 150P...
Lou
loutheblueguru
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Oct 24, 2009
12:59 am
13318
Hi All..Looking at various write-ups on collimating a Newtonian and that the earlier Tal 2 has a spherical mirror where have i noticed/read that the secondary...
rob
robertwood8
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Oct 26, 2009
2:10 am
13319
I'm not sure where the notion of aligning the secondary anywhere but in the center came from. Certainly you would not do this with a parabolic mirror - if you...
hwnewton
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Oct 26, 2009
2:16 am
13320
Hello, Have a look at the Sky and Telescope site in the Do It Yourself under collimating a Newtonian Telescope. It was the eye opener for me. Hope this helps...
gurneyfan67
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Oct 27, 2009
3:23 am
13321
The instruction book for my TAL2 No.92 (recently sold) says center the secondary i bought a cheshire collimator for this and the results were brilliant. Try...
themouldyone
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Oct 27, 2009
4:01 am
13322
Re seconday mirror "Off Set" ... I'm quite sure that this is indeed well known as a requirement for proper alignment of the the primary and secondary mirrors...
scopecrazy
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Oct 27, 2009
4:02 am
13323
Hi Hal, sorry, I have to disagree. Offsetting the secondary mirror is not a notion, but necessary in fast newton systems. If you don't offset with f/5 and...
mischamichl
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Oct 27, 2009
4:02 am
13324
Hi, according to Newtwin the offset for a 6" f/8 System should be around 0,05mm. Nothing to worry about. Viele Grüße Wolf...
Wolf Lonczyk
lupo914
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Oct 27, 2009
4:02 am
13325
This is clearly one of those subjects that can get grossly out of control and into heated discussions. Lets see if we can avoid that. I looked at 2 web sites...
hwnewton
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Oct 27, 2009
4:20 am
13326
Hi all, Information from Texereau's book is correct in regards to Offsetting the secondary. It is also more important the larger the scope. If you draw a...
Telescopes & Astronomy
telescopesm
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Oct 27, 2009
10:59 pm
13327
The original reference to sky and telescope for collimating a newtonian was a very wise reference. I just read through it and it includes as a sidebar some...
hwnewton
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Oct 29, 2009
3:17 am
13328
Is this not just simple geometry? An ellipse is a conic section, in this case the cone is the light cone. However, the centre of the ellipse is not at the axis...
hyranscolde
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Oct 31, 2009
9:28 am
13329
Hi All....A query on the rotation of the motor running the RA Axis.! Does anybody have any information as to the direction of the shaft rotation of the motor...
rob wood
robertwood8
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Nov 2, 2009
1:06 am
13330
The original motor rotates in a clockwise direction at 1/5 rpm. I hope that helps. CS Steve ... From: rob wood To: TALScopes@yahoogroups.com Sent: Sunday, 01...
Stephen.B.Forbes
telescopeman54
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Nov 2, 2009
1:13 am
13331
Hi Rob, Glad you liked the motor, but understand the main bearing is no good. The 2M is an f/8 which dates back to the 1950's. The spherical mirror is on the...
Lou
loutheblueguru
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Nov 3, 2009
4:19 am
13332
Just acquired this mount and RA drive is intermittent. The motor shaft appears to have too much play and must be in just the right position to engage inside...
rdschwier
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Nov 5, 2009
1:08 am
13333
Hi Richard. Sounds like the motor reduction gearbox is suspect. My mount showed similar problems before I replaced mine. Here's a link to a pic of my worn...
andrew554495
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Nov 5, 2009
11:42 am
13334
Hoping i read your question correct!!Had the same sought of problem with my motor/gearbox.May be the shaft is not engaging the the reduction gear because of...
rob wood
robertwood8
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Nov 6, 2009
3:18 am
13335
Dear Rob thanks for the reply and excuse me for delay in answering but I am currently struggling with a bad cold but will get on it when I recover Richard ... ...
Richard Schwieren
rdschwier
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Nov 10, 2009
4:20 am
13336
Dear Andy thanks for the reply and sorry for the delay in answering but I am currently under the influence of a bad cold and not up to much astro fix. ...
Richard Schwieren
rdschwier
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Nov 10, 2009
4:20 am
13337
Whilst surfing the web, I bumped into a very interesting website, set up by Nenad Filipovic. A very indepth review of the Tal 200K is linked here, ...
andrew554495
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Nov 11, 2009
12:08 am
Messages 13308 - 13337 of 13337   Oldest  |  < Older  |  Newer >  |  Newest
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