Stellarvue Strehl

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DavidT avatar
Does anybody know what their Strehl is for a Stellarvue SV105T?
Lynn K avatar
I suggest call Stellarvue to get and acurant answer.

Lynn K.
DavidT avatar
Thanks, I tried that, they said they did not have that information?
Jared Willson avatar
On their most recent high-end lineup, the SVX scopes, Stellarvue claims a minimum Strehl of 0.99. Obviously, that's monochromatic not poly. As far as I know, that minimum does not apply to older scopes like your SV105T. Doesn't mean the older scopes were worse, just that you can't tell. The SV105T had imported optics figured by a sub contractor. The current SVX optics are figured in-house. 

It is possible that if you contact StellarVue directly and give them your serial number, that they have an interferometer test for your telescope and could tell you your number. Honestly, though, if you are happy with the telescope I would just drop the subject. Learning whether your scope is 0.94 or 0.98 or even 0.88 isn't going to change the views any–for better or worse–and it has the potential to make you love your telescope a little bit less.
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DavidT avatar
Thanks, I did call Stellarvue. They said they did not save that info.  You are right though, It is a great scope.  Just curious because there is an SV115T on Astromart now saying the Strehl was .967.
John avatar
i have a stellarvue myself,and  even its a doublet,they are very sharp and  show correct color.

some example. https://www.astrobin.com/yzduio/
Yuxuan avatar
If you want to find out, Pixinsight has a script called WavefrontEstimator that lets you estimate the Strehl yourself. The documentation is excellent and you can find out the Strehl of your scope in one night!
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DavidT avatar
Thanks, Yes excellent pics. I have 3 SV scopes and love them all. 

I ill try the Pixinsight wave front. Thanks