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UncensoredTakGroup · Discussion group for Takahashi owners and fans

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Group Information

  • Members: 3192
  • Category: Astronomy
  • Founded: Jan 25, 2000
  • Language: English
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Messages 30237 - 30266 of 60871   Oldest  |  < Older  |  Newer >  |  Newest
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30237 derek_ec Send Email Jul 1, 2005
7:22 am
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...
30238 Gene Horr
genehorr Send Email
Jul 1, 2005
7:34 am
It is the second one made in the year 2000 ("00"). Gene Horr...
30239 Art Ciampi (Texas Nau...
art1942us Send Email
Jul 1, 2005
2:00 pm
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...
30240 Skyloverz@...
skyloverz2002 Send Email
Jul 1, 2005
2:02 pm
What news Art? [Non-text portions of this message have been removed]...
30241 Art Ciampi (Texas Nau...
art1942us Send Email
Jul 1, 2005
2:06 pm
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 ... ...
30242 Art Ciampi (Texas Nau...
art1942us Send Email
Jul 1, 2005
2:28 pm
I will ask for you. Art ... From: Skyloverz@... To: UncensoredTakGroup@yahoogroups.com Sent: Friday, July 01, 2005 9:01 AM Subject: Re:...
30243 hw_ngr Send Email Jul 1, 2005
10:11 pm
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...
30244 Gene Horr
genehorr Send Email
Jul 1, 2005
10:31 pm
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...
30245 hw_ngr Send Email Jul 2, 2005
2:55 am
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"...
30246 wmrroy Send Email Jul 2, 2005
3:07 am
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...
30247 Gene Horr
genehorr Send Email
Jul 2, 2005
3:31 am
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...
30248 Steve Beckwith
spbeckwith2003 Send Email
Jul 2, 2005
3:55 am
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...
30249 derek_ec Send Email Jul 2, 2005
4:17 am
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...
30250 Mike J. Shade
mjlshade Send Email
Jul 2, 2005
4:53 am
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...
30251 Herb York
herbyork Send Email
Jul 2, 2005
4:59 am
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...
30252 Ray York
cedarking Send Email
Jul 2, 2005
5:10 am
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...
30253 wmrroy Send Email Jul 2, 2005
5:21 am
... 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...
30254 Ray York
cedarking Send Email
Jul 2, 2005
5:24 am
Thank you Randy. :^) wmrroy <wmrroy@...> wrote:--- In UncensoredTakGroup@yahoogroups.com, Ray York <rayyork@y...> ... Assuming we do, I will fax you a...
30255 ninae1zd Send Email Jul 2, 2005
6:06 pm
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...
30256 vahe352 Send Email Jul 2, 2005
10:38 pm
... wavefront ... front ... In compound optical systems errors are not always cumulative, sometimes they are and sometimes they are not. In high end compound ...
30257 jhapeman1 Send Email Jul 3, 2005
4:35 am
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...
30258 adam81224 Send Email Jul 3, 2005
5:53 am
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...
30259 astrotrf2002 Send Email Jul 3, 2005
6:25 am
... 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. ... ...
30260 hw_ngr Send Email Jul 3, 2005
11:21 am
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...
30261 Gene Horr
genehorr Send Email
Jul 3, 2005
11:57 am
Whoops! Sorry about that. I thought that it had the same thread as the three set screw adapter. What part was missing? Gene Horr...
30262 derek_ec Send Email Jul 3, 2005
3:32 pm
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...
30263 Bryan Tiffany
b_l_tiffany Send Email
Jul 3, 2005
3:45 pm
Heinz, I would take exception to Vahe's comment about testing the Mewlon- 300 interferometrically. Interferometry is the perfect tool for doing system wave...
30264 Neil Fleming
neilfleming Send Email
Jul 3, 2005
4:51 pm
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...
30265 Mike J. Shade
mjlshade Send Email
Jul 3, 2005
5:36 pm
... 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...
30266 Gene Horr
genehorr Send Email
Jul 3, 2005
6:27 pm
... 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...
Messages 30237 - 30266 of 60871   Oldest  |  < Older  |  Newer >  |  Newest
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