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Equipment Discussions >> Refractors

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jnewton
member


Reged: 12/20/07
Posts: 88
TAK Skypro 90 II or SV90T
      #3432397 - 11/06/09 07:13 AM

Has anyone had experience with both of these scopes,and, if so, any thoughts on which is better overall or advantages/disadvantages of each?

Thanks in advance.


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t.r.
professor emeritus


Reged: 02/14/08
Posts: 577
Loc: Upstate NY
Re: TAK Skypro 90 II or SV90T new [Re: jnewton]
      #3432483 - 11/06/09 08:50 AM

Don't know if you looked at this already...
http://www.cloudynights.com/item.php?item_id=1497

--------------------
Present Stable:
Kmart 40mm(first scope @ age 8)
Jason 60mm
C80SS
Tak Sky90II
PST
C6XLT
AP130 "Gran Turismo"
C-11XLT
EQ-2,CG-4,ASGT-5,DenkII's,TV(zoom,plossls,Ethos),Pentax XW's,UO volcano set, ZAOII 4mm,BaaderZoom and other un-notables


"For me, it is far better to grasp the Universe as it really is than to persist in delusion, however satisfying and reassuring."
Carl Sagan




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Trombone
professor emeritus
*****

Reged: 07/11/05
Posts: 719
Loc: Canadian west (and north!)
Re: TAK Skypro 90 II or SV90T new [Re: t.r.]
      #3433611 - 11/06/09 07:32 PM

Depends on what the use is. Visual vs AF. Tak will be shorter OTA and lighter as well. Longer FL on SV and is triplet with less 'colour'. More accessories needed with Tak.

--------------------
SV90BV(F) on Gyro DX
CPC1100
12" LightBridge
Round Table platform
8"F6 dob
LXD75
Today anyway!


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Jared
Carpal Tunnel
*****

Reged: 10/11/05
Posts: 2534
Loc: Piedmont, California, U.S.
Re: TAK Skypro 90 II or SV90T new [Re: jnewton]
      #3433680 - 11/06/09 08:12 PM

Quote:

Has anyone had experience with both of these scopes,and, if so, any thoughts on which is better overall or advantages/disadvantages of each?

Thanks in advance.




I haven't owned either, so I won't offer any opinions that would require first-hand knowledge. Even so, there are some differences you can find just from comparing specifications and forums like this one:
  • The Tak is smaller
  • The Tak is lighter
  • The Stellarvue is a triplet with the resulting pros and cons that we have all been debating for years; by contrast, the Tak is, of course, a doublet
  • The Tak uses Fluorite crystal as its abnormal dispersion element, while the Stellarvue uses either Fluorite or fluoro-crown glass (Ohara FPL-53) depending on which trim level you are looking at; some believe Fluorite has an almost magical effect on image quality
  • The Stellarvue has a choice of two different two-speed Crayford focusers while the Tak comes with a 2" rack and pinion; I can highly recommend the 2" Feathertouch from personal experience on other telescopes
  • It is well documented that the Tak can come out of collimation if knocked around too much--consider how you will be transporting the scope and whether it will ever be shipped
Anything else I might add would require that I actually look through the scopes you are asking about

--------------------
- Jared Willson
  • TMB 152 f/8 Apochromat
  • Fluorostar FLT-110 w/ TEC optics
  • Stellarvue SV80S
  • Astro-Physics Mach1 GTO
  • Takahashi Teegul SP Mount
  • STL-11000



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