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#4426 nicknacknock

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Posted 21 September 2020 - 02:00 AM

Takahashi FS-102NSV and sidekick Tele Vue Genesis (Non-SDF). 

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#4427 25585

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Posted 21 September 2020 - 06:30 AM

Trutek Astro, long time UK Tak seller website has gone. Voicemail when I rang. I hope Nick who runs the business is OK, great guy & very knowledgable on all things Tak!  



#4428 Deadlake

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Posted 22 September 2020 - 04:53 AM

Trutek Astro, long time UK Tak seller website has gone. Voicemail when I rang. I hope Nick who runs the business is OK, great guy & very knowledgable on all things Tak!  

www.trutekastro.co.uk is still a registered domain name, so let's just hope the website is down.   


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#4429 doctordub

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Posted 22 September 2020 - 10:10 AM

Yes, it appears so. If you dig around the Takahashi Japan website and Japanese astro web sites Takahashi says that the KA#36595 improves spot sizes particularly at the blue/violet end of the spectrum, flattens the field and improves Strehl for FC-100DL and FC-100DZ. It is only recomended for use on the FSQ106EDX4 and the FC-100DL/DZ scopes. But the Strehl improvement claimed for the FC-100DL/DZ seems impossible, the FC-100DL is already over .95% and the DZ is slightly higher. I bought one from TNR but the fires here in California have prevented any observation let alone serious comparisons. So I wait.  

I have been using the TOA extender 1.6 (TKA31595) to observe the Moon, Jupiter and Saturn for a few nights with my FS-152NSV, and it has been excellent! Going from F8 to F12.8 seems to improve seeing with the planets at such a low Alt. Much better ergonomics than a barlow and I could not see any CA on the Lunar limb at any power even before and after focus.

CS

Jonathan


Edited by doctordub, 22 September 2020 - 10:14 AM.

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#4430 Lookitup

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Posted 23 September 2020 - 12:14 AM

Is there a 1.6 extender for the Tak 100DF usable with binoviewer? More glass but what potential. Cs Pete



#4431 nicknacknock

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Posted 23 September 2020 - 12:16 AM

Pete,

 

I use the Baader glasspath correctors and they come in 1.7x and 2.6x

 

IF you want to have a sort of similar arrangement with the 1.6x extender, your choice is to add a Powermate / Teleextender in the mix. Tele Vue, Explore Scientific and Harry Siebert come to mind.



#4432 StarAlert

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Posted 23 September 2020 - 01:05 AM

Is there a 1.6 extender for the Tak 100DF usable with binoviewer? More glass but what potential. Cs Pete

Tak recommends the TKA00595 Extender Q1.6x for the DF. Using it will reduce the amount of backfocus from 225mm to 157mm, so you'll probably need at least a 1.7x GPC if you want to reach focus with a binoviewer. 



#4433 Eigen

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Posted 23 September 2020 - 10:02 AM

For binoviewing in a quality APO at f7-8ish i would recommend the baader 1.8x GPC as it also corrects for the spherocromatism introduced by the prisms. I have been very happy with mine.


Edited by Eigen, 23 September 2020 - 10:04 AM.

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#4434 bcgroove

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Posted 23 September 2020 - 04:32 PM

FS-152 for sale over on A-mart. Just sayin'. Not in my budget.

 

Bob



#4435 Esso2112

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Posted 23 September 2020 - 06:17 PM

FS-152 for sale over on A-mart. Just sayin'. Not in my budget.

 

Bob

That one didn’t last long. 


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#4436 bcgroove

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Posted 23 September 2020 - 06:56 PM

That one didn’t last long. 

I hope someone here got it. A dream scope.

 

Bob


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#4437 YAOG

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Posted 23 September 2020 - 09:12 PM

I was going to ad a reply but ended chasing the Takahashi extender and Q module rabbit down the hole by building a chart by going through every system chart and Takahashi spec chart to see what extenders go with which scopes both current and old. Interestingly, at least to me I found there were several different part numbers and versions of recommended extenders that were changed as new extenders and scopes were introduced. Then I pressed back inadvertently and lost an hour's work, grrr... 


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#4438 25585

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Posted 24 September 2020 - 10:09 AM

I was going to ad a reply but ended chasing the Takahashi extender and Q module rabbit down the hole by building a chart by going through every system chart and Takahashi spec chart to see what extenders go with which scopes both current and old. Interestingly, at least to me I found there were several different part numbers and versions of recommended extenders that were changed as new extenders and scopes were introduced. Then I pressed back inadvertently and lost an hour's work, grrr... 

History is your friend ;)



#4439 YAOG

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Posted 24 September 2020 - 10:33 AM

History is your friend wink.gif

When editing in the reply box I don't think there is any content saved when using the back button. When the reply box is closed I think the website server flushes the data. Do you know a trick I can use in the future? In all my years of web posting I've only done this twice. 



#4440 grahamtv

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Posted 24 September 2020 - 12:57 PM

When editing in the reply box I don't think there is any content saved when using the back button. When the reply box is closed I think the website server flushes the data. Do you know a trick I can use in the future? In all my years of web posting I've only done this twice. 

Chip,

Too often I’ve heard the moans of others who’ve lost an hours’ worth of work. Since this Reply box doesn’t support auto-save or save a draft, if your reply takes more than a minute or two to create, don’t rely on the Reply box alone.

First create your reply elsewhere (such as any text editor (whether Word, Notepad, Notes, etc.)) saving at least every five minutes ...and then copy and paste the full reply here in the Reply box.

(And if you’re willing to rely upon your device’s Clipboard and feel comfortable, you can periodically simply  “Select All” and “Copy”).

p.s., 5 minutes of lost work is my personal maximum.

 

Sorry!
Tom

 

p.s., You might want to experiment with the “View Auto Saved Content...” hyperlink in the lower left-hand side just below the Reply box. Though I wouldn’t trust it for an hour. 



#4441 25585

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Posted 24 September 2020 - 01:14 PM

http://www.takahashi...prod-chart.html

http://www.takahashi...cts/bnclog.html

 

Extender adaption table  http://www.takahashi...roducts_ex.html


Edited by 25585, 24 September 2020 - 01:18 PM.


#4442 YAOG

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Posted 24 September 2020 - 01:16 PM

Chip,

Too often I’ve heard the moans of others who’ve lost an hours’ worth of work. Since this Reply box doesn’t support auto-save or save a draft, if your reply takes more than a minute or two to create, don’t rely on the Reply box alone.

First create your reply elsewhere (such as any text editor (whether Word, Notepad, Notes, etc.)) saving at least every five minutes ...and then copy and paste the full reply here in the Reply box.

(And if you’re willing to rely upon your device’s Clipboard and feel comfortable, you can periodically simply  “Select All” and “Copy”).

p.s., 5 minutes of lost work is my personal maximum.

 

Sorry!
Tom

 

p.s., You might want to experiment with the “View Auto Saved Content...” hyperlink in the lower left-hand side just below the Reply box. Though I wouldn’t trust it for an hour. 

Hi Tom,

 

I normally use Word or gmail composing then dropping text into the reply box if I'm not on my phone as is usually the case. But this time I was on my studio box and had several windows open across several screens and simply clicked on the wrong button while talking on the phone. 

 

I don't think I have a "View Auto Saved Content..." link anywhere on the lower part of the screen, what platform is that on? This machine is an Intel based box with Win10 Pro using Chrome.   



#4443 25585

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Posted 24 September 2020 - 01:21 PM

Chrome is useful but not the best. 



#4444 YAOG

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Posted 24 September 2020 - 01:41 PM

That Takahashi Japan extender chart is weak sauce. It used to make more distinctions than it does now having been dumbed down and simplified for the current refractor offerings. You know  there have been more than one version of FSQ106, FC, FS etc. with different extenders recommended for them that are not in the chart. Even the extenders have changed even though this chart calls them the same thing. You have to use actual part numbers crossed against photos to get to the bottom of it. For example there have been more than one version of the EX Q1.6x extenders, I found different extender part numbers with photos. You cannot trust that chart because it has low historical product knowledge and only reflects the current refractors not the older same series refractors.       



#4445 sw196060

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Posted 24 September 2020 - 04:43 PM

What's all this fluorite Tak stuff about?



#4446 marcus_z

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Posted 24 September 2020 - 04:48 PM

What's all this fluorite Tak stuff about?

That's how takitis typically starts lol.gif


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#4447 25585

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Posted 25 September 2020 - 05:54 AM

That Takahashi Japan extender chart is weak sauce. It used to make more distinctions than it does now having been dumbed down and simplified for the current refractor offerings. You know  there have been more than one version of FSQ106, FC, FS etc. with different extenders recommended for them that are not in the chart. Even the extenders have changed even though this chart calls them the same thing. You have to use actual part numbers crossed against photos to get to the bottom of it. For example there have been more than one version of the EX Q1.6x extenders, I found different extender part numbers with photos. You cannot trust that chart because it has low historical product knowledge and only reflects the current refractors not the older same series refractors.       

2 versions of the 1.6x I know of, the 1.25" & 2" models. The ED 1.5× was for both TSAs & FSQ-85. Maybe a post in Classic Telescopes forum will get you answers on Taks of yesteryear 

 

Here is a thread by mikeDnight on Stargazers Lounge of Taks gone bye   Kudos to Mike for such great research!  https://stargazerslo...strument-album/


Edited by 25585, 25 September 2020 - 06:20 AM.

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#4448 Esso2112

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Posted 26 September 2020 - 09:19 PM

Had the FS-152 out tonight for some lunar observing and eyepiece comparisons.  Seeing was 4/5. I am always amazed at the contrast and tonal variations this scope gives on the moon. I didn’t push the magnification, only went up to about 175x. For viewing the entire moon, I used a TMB 25mm aspheric ortho, Masuyama 25mm (both wide and normal), Takahashi LE 30mm and a TMB Paragon 30mm. The TMB 25mm aspheric was the clear winner with the crispiest, brightest, and the most contrast in shades of grey.  The order for the rest was Masuyama 25mm wide, TMB Paragon 30mm, Takahashi LE 30mm, and last was the Masuyama 25mm normal. 
 

For more detailed views, I used mostly TMB supermonos, 7mm, 9mm, 10mm, and 14mm. Also an AP SPL 12mm. No surprise, all gave nice, crisp, contrasty views. 
 

I used a Baader BBHS prism diagonal for all the comparisons.  There were other eyepieces involved and all gave very good views. 


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#4449 Tyson M

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Posted 26 September 2020 - 09:40 PM

My latest and possible favorite Takahashi (famous last words as I love all taks):

 

20200917_214611 (1).jpg

 

 


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#4450 25585

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Posted 27 September 2020 - 05:05 AM

My latest and possible favorite Takahashi (famous last words as I love all taks):

 

attachicon.gif20200917_214611 (1).jpg

A Tak model I almost bought!  How does it compare with the TSA-120 you had?




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