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Tasco 11TR Star Test

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#1 bremms

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Posted 21 January 2013 - 11:46 PM

Well, after a installing a good quality diagonal, modifying the diagonal mount and fixing/ modding the tube I finally got it out for some good viewing. Looked at Jupiter and the moon of course and I was shocked at the crispness of the images.
Did a final collimation on the primary and I was treated to some fine images. Did a couple of star tests and the diffraction disc is nearly perfect in and outside focus. I was really shocked at the quality of the mirror. Jupiter looked about the same as my 4" F15 Jaegers and it is a good lens. Image was actually a little brighter than the Jaegers. Detail was about the same. The scope just snaps to focus. It deserves a better focuser at least.

#2 CharlieB

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Posted 22 January 2013 - 07:32 AM

These little reflectors often surprise me. We often think these are toys. I have a 100mm f/10 Royal Astro that give images I don't get from my 6" refractor. I have read that many of those great mirrors came from Carton Optical, but who knows?

#3 magic612

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Posted 22 January 2013 - 10:15 AM

When the weather warms up, I'll be building a new, more stable tripod for my 11-TR (similar to the TE, just a red tube, but still Japan-made). To me, that's their one shortcoming; the unsteady tripods the were put on. Otherwise, the 11-TE / TR's have always tossed up some nice images for me.

#4 bremms

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Posted 22 January 2013 - 12:09 PM

I have a second 11TR OTA I picked up for $13 on the bay. That one is going to be modded even more and will be a grab and go type scope. The 11TR with the mount is my son's scope. Is the that one mine daddy?? I like it.. Sure, why not. He's three and made me take his scope out to look at the moon and Jupiter. I'm going to put a little larger diagonal on the other, a 1.25 focuser, and a Vixen dovetail plate. That way I can get a wider field.

#5 magic612

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Posted 22 January 2013 - 01:48 PM

I have a second 11TR OTA I picked up for $13 on the bay. That one is going to be modded even more and will be a grab and go type scope. The 11TR with the mount is my son's scope. Is the that one mine daddy?? I like it.. Sure, why not. He's three and made me take his scope out to look at the moon and Jupiter. I'm going to put a little larger diagonal on the other, a 1.25 focuser, and a Vixen dovetail plate. That way I can get a wider field.


:waytogo:

#6 rmollise

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Posted 23 January 2013 - 07:45 AM

These little scopes can do a heck of a job. That said, I wouldn't expect a perfect star test--the primary mirrors are spherical.

#7 bremms

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Posted 23 January 2013 - 01:32 PM

That's what I thought. The one I have may be an anomaly but it is parabolic from what I can tell at ~180x on star images. I do have a second OTA maybe I can look at that one at some point. It's certainly better than most of the SCT's I've star tested. Maybe one day I'll find a good SCT..






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