Search the web
Sign In
New User? Sign Up
UncensoredTakGroup · Discussion group for Takahashi owners and fans
? Already a member? Sign in to Yahoo!

Yahoo! Groups Tips

Did you know...
Hear how Yahoo! Groups has changed the lives of others. Take me there.

Best of Y! Groups

   Check them out and nominate your group.
Having problems with message search? Fill out this form to ensure your group is one of the first to be migrated to the new message search system.

Messages

  Messages Help
Advanced
Messages 30237 - 30266 of 52108   Oldest  |  < Older  |  Newer >  |  Newest
Messages: Simplify | Expand   (Group by Topic) Author Sort by Date ^
30237
Hi all, I don't think I've posted here before but have been a member and visited from time to time. I just acquired an older Sky 90 - I think it was from an...
derek_ec
Offline Send Email
Jul 1, 2005
7:22 am
30238
It is the second one made in the year 2000 ("00"). Gene Horr...
Gene Horr
genehorr
Offline Send Email
Jul 1, 2005
7:34 am
30239
Please use the numbers in our catalogue or at our website . On rare occasion we may use the Takahashi longer number, but this is used for new parts. Our...
Art Ciampi (Texas Nau...
art1942us
Offline Send Email
Jul 1, 2005
2:00 pm
30240
What news Art? [Non-text portions of this message have been removed]...
Skyloverz@...
skyloverz2002
Offline Send Email
Jul 1, 2005
2:02 pm
30241
All slow motion controls for all EM-10's are electric. The previous EM-100 mount had manual slow motions, but that was almost 15 years ago. Art Ciampi ... ...
Art Ciampi (Texas Nau...
art1942us
Offline Send Email
Jul 1, 2005
2:06 pm
30242
I will ask for you. Art ... From: Skyloverz@... To: UncensoredTakGroup@yahoogroups.com Sent: Friday, July 01, 2005 9:01 AM Subject: Re:...
Art Ciampi (Texas Nau...
art1942us
Offline Send Email
Jul 1, 2005
2:28 pm
30243
Does anybody know the wavefront error of the primary of the Mewlon 300? Are there any data available somewhere? Or is this a trade secret? Thank you and clear...
hw_ngr
Offline Send Email
Jul 1, 2005
10:11 pm
30244
It isn't published. But the image quality is as good/better than systems which test at 1/4 wave wavefront error which implies 1/16 wave surface error or...
Gene Horr
genehorr
Offline Send Email
Jul 1, 2005
10:31 pm
30245
Gen , thank you for the reply. So, the Mewlon300 would for example be a better performer than a system with a 1/12 wave primary? When you talk about "system"...
hw_ngr
Offline Send Email
Jul 2, 2005
2:55 am
30246
I don't usually cross post, but I posted this to the other Tak group and since I've received a lot of help on this site, wanted to post here as well. I am...
wmrroy
Offline Send Email
Jul 2, 2005
3:07 am
30247
The wavefront error increases as 2/cos(light angle from the plane of the mirror). To simply things substantially we'll treat the mirrors as flat planes and so...
Gene Horr
genehorr
Offline Send Email
Jul 2, 2005
3:31 am
30248
Heinz, Assume the primary and secondary both each have a surface error of 1/16th of a wavelength. The wavefront will have a 1/8th wave error after reflecting...
Steve Beckwith
spbeckwith2003
Offline Send Email
Jul 2, 2005
3:55 am
30249
Ah, I see.....Many Thanks. I have a short version and with this, a long version. Guess I'll do a side by side but probably keep my short version, sell this...
derek_ec
Offline Send Email
Jul 2, 2005
4:17 am
30250
Ditto on the Mewlon, I'm using it for CCDwork at its native f/11.6 or so with an ST10XE and other than a touch of coma at the edges, works very well and am...
Mike J. Shade
mjlshade
Offline Send Email
Jul 2, 2005
4:53 am
30251
Mike Shade and happy in the same sentence? I am keeping this one <g> Herb On Jul 1, 2005, at 9:53 PM, Mike J. Shade wrote: Ditto on the Mewlon, I'm using it...
Herb York
herbyork
Offline Send Email
Jul 2, 2005
4:59 am
30252
Hi Randy, I am in tomorrow and I think that we have some of these in stock. Assuming we do, I will fax you a copy of the instructions if you like. If you have...
Ray York
cedarking
Offline Send Email
Jul 2, 2005
5:10 am
30253
... Assuming we do, I will fax you a copy of the instructions if you like. If you have a fax # you would like it sent to, please email the # to my main account...
wmrroy
Offline Send Email
Jul 2, 2005
5:21 am
30254
Thank you Randy. :^) wmrroy <wmrroy@...> wrote:--- In UncensoredTakGroup@yahoogroups.com, Ray York <rayyork@y...> ... Assuming we do, I will fax you a...
Ray York
cedarking
Offline Send Email
Jul 2, 2005
5:24 am
30255
Hey I just wanted to tell you about a great company I found! I applyed for a lower mortgage rate and i only had to fill in a simple form. This month alone I...
ninae1zd
Offline Send Email
Jul 2, 2005
6:06 pm
30256
... wavefront ... front ... In compound optical systems errors are not always cumulative, sometimes they are and sometimes they are not. In high end compound ...
vahe352
Offline Send Email
Jul 2, 2005
10:38 pm
30257
Anyone have access to non-Japanese instructions on how to polar align this little guy with the optional polar scope? I thought I had it last night, but I...
jhapeman1
Offline Send Email
Jul 3, 2005
4:35 am
30258
One week later, had to order an adaptor from TNR-all's well after an additional $100.00 bucks. Works great, recommended to anyone with a binoviewer- lots...
adam81224
Offline Send Email
Jul 3, 2005
5:53 am
30259
... occasion we may use the Takahashi longer number, but this is used for new parts. Our catalogue will have the longer stock number for these few parts. ... ...
astrotrf2002
Offline Send Email
Jul 3, 2005
6:25 am
30260
Thank you Gene and all the others for your elaborate answers. I am really impressed by your helpfulness. My picture is clearer now, but it seems to be a...
hw_ngr
Offline Send Email
Jul 3, 2005
11:21 am
30261
Whoops! Sorry about that. I thought that it had the same thread as the three set screw adapter. What part was missing? Gene Horr...
Gene Horr
genehorr
Offline Send Email
Jul 3, 2005
11:57 am
30262
Hello all, happy 4th July weekend. I just had to share my elation at first light on my Sky 90('s) last night. This may all be a pase discussion here as I...
derek_ec
Offline Send Email
Jul 3, 2005
3:32 pm
30263
Heinz, I would take exception to Vahe's comment about testing the Mewlon- 300 interferometrically. Interferometry is the perfect tool for doing system wave...
Bryan Tiffany
b_l_tiffany
Offline Send Email
Jul 3, 2005
3:45 pm
30264
I just got a new notebook computer. It doesn't have a serial port, so I got a USB-Serial converter cable. Everything seemed OK when I tested it before going...
Neil Fleming
neilfleming
Offline Send Email
Jul 3, 2005
4:51 pm
30265
... Interesting idea regarding the coma and mirror spacing...I have had experience with Ritchey's and they are very fickle in regards to mirror spacing and...
Mike J. Shade
mjlshade
Offline Send Email
Jul 3, 2005
5:36 pm
30266
... For long exposure or relatively low power views you are completely correct. But for high power planetary viewing or imaging when you are waiting for those...
Gene Horr
genehorr
Offline Send Email
Jul 3, 2005
6:27 pm
Messages 30237 - 30266 of 52108   Oldest  |  < Older  |  Newer >  |  Newest
Advanced
Add to My Yahoo!      XML What's This?

Copyright © 2009 Yahoo! Inc. All rights reserved.
Privacy Policy - Terms of Service - Guidelines - Help