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ukcanuck
Vendor (Skylight Telescopes)
Reged: 11/07/06
Posts: 738
Loc: London, UK
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The eyepieces are .965". I've seen the longer focal length versions before on various Japanese scopes too, but have never come across anything like these high power orthos before.
Collimation is still not perfect, but the star image is pretty good, but with wicked diffraction spikes (although I haven't looked through anything with vanes for awhile, could be I've just forgotten!)
As I recall, the intra focus diffraction rings were pretty clear, while the extra focal rings were almost non-existant...just a black void. Although it could have been the other way around! I'll look again tonight.
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Richard
A few nice telescopes.
...but most importantly, a beautiful son who fills my days with sunshine, and my nights with stars.
THE SKYLIGHT F15
Skylight Gallery
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DaveTinning
member
Reged: 01/03/09
Posts: 44
Loc: Central England
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Hi Richard,
I saw your scope on ebay and like you was fascinated by it..I couldn't find anything on the net either, and the vendors' description of it as an "astrological" scope  didn't encourage me to ask them questions about it!
In the end I passed as I have bought other scopes recently and am in the serious "doghouse" with SWMBO!
The scope certainly looks solidly built and should give you some good views..I recently made my first venture away from refractors (  ) and bought an OMC140 Mak OTA. At 140mm aperture F14 I have been impressed with its' lunar and planetary (Jupiter, Io transit) views, and your Mizar at 150mm when properly collimated (have fun with that  ) should be similarly impressive.
Would be interested to hear about your detailed first light opinion.
By the way, congratulations on your new Skylight refractor, a thing of beauty and I'm sure creating a lot of interest in the UK Astro community.
best wishes,
Dave
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Tal 125R F9 refractor on CG-5
Tal 100RS F10 on Bresser Meade Mon-2
Meade AR6 152mm F8 refractor
Topic (Towa)D80mm F1200mm F15 Refractor 1970s
Tasco 14-Te Refractor 1969
Prinz Astral 500 D60mm F910mm Refractor c1980
I like refractors..:-)
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AaronM
super member
Reged: 02/02/06
Posts: 340
Loc: NRW, Germany
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This old Mizar AR mount looks ident to the actually GSO SkyView mount - So I guess, Mizar has sold the constructionsheets to GSO ?!
CS Michael
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desertrefugee
Pooh-Bah
Reged: 08/06/07
Posts: 1212
Loc: Arizona
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Quote:
This old Mizar AR mount looks ident to the actually GSO SkyView mount
I agree. I was thinking that it looked a lot like an Orion Sky View Deluxe mount that I had.
I'm sure the resemblance is no cooncidence.
No matter the mount, the OTA is still intriguing and the information supplied by Ross (deSitter) bears out the unusual nature of this piece.
Hope you've gotten it collimated now.
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"Illimitable ocean, without bound, Without dimension, where length, breadth, and height, And time, and place are lost." - Milton
-Darrell
Reflectors - 76 to 305mm (f4.7 to f9.2)
Refractors - 50 to 120mm (f5 to f16.7)
Binoculars - 6x15 to 22x100
N. Phoenix, AZ
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ukcanuck
Vendor (Skylight Telescopes)
Reged: 11/07/06
Posts: 738
Loc: London, UK
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Quote:
Hope you've gotten it collimated now.
Nope, it got sidelined...I'm actually looking at it now.
Collimation is actually not too bad, but signs are that there's something either wrong with the optical train, or it's a poor mirror. Given the maker, both seem unlikely, but I was hoping Galakuma had some thoughts on this...
It could be someone has gotten their hands dirty on it in the past...
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Richard
A few nice telescopes.
...but most importantly, a beautiful son who fills my days with sunshine, and my nights with stars.
THE SKYLIGHT F15
Skylight Gallery
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dougspeterson
Pooh-Bah
Reged: 09/01/04
Posts: 1041
Loc: Murrieta, CA
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I believe University Optics imported these a decade or more ago. My recollection was that it was an all-spherical cassegrain with corrector lenses that was offered as a cheap alternative. The star test sounds like a lens is missing or reversed, either at the secondary or in the focuser.
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18" Dob
12" SCT
8" TMB F6 + Chromacor
6" F6 APM/LZOS Fluorite triplet, 32", 32lbs
2ea. 6mm singlets, one blind
"--Granted, that's a worse case scenario. The destruction might in fact be ... limited to our own galaxy."
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