University Optics Orthoscopic 6mm

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Brand and Model:University Optics Orthoscopic 6mm
Price ($USD):$57.95
Type:Orthoscopic
Focal Length:6 mm
Barrel Size:1.25 in
Apparent FOV:42.0 degrees
Field Stop Dia.:0.0 mm
Eye Relief:0 mm
Elements:4
Weight (lbs):
Description:
Vote Highlights Vote
University Optics Orthoscopic 6mm
Just like my 4mm UO Abbe another great planetary ep. Very good light transmission,sharpness and contrast with no lateral color and comforable eye relief without my glasses. Another winner Mr Seyfried.


Stan Taylor Vancouver B.C.

Overall Rating: 10
Optics:9 Value:10
Weight: 10 (Trustworthy Vote)
Date:
By: steamer
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=492648

University Optics Orthoscopic 6mm
Excellent sharpness and contrast for higher powered planetary and lunar viewing. Eye relief is surprisingly comfortable compared to a 6mm plossl - I can see 75% of the FOV with my glasses on.

Like the highly praised 9mm U.O. ortho, this is an exceptional value that beats virtually all other higher priced plossls, modified plossls and far pricier eyepieces with the exception of FOV. But, that doesn't matter that much when your target is a planet.

Overall Rating: 10
Optics:10 Value:10
Weight: 5 (Veritable Vote)
Date:
By: PJBilotta
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=142947

University Optics Orthoscopic 6mm
Apparently there are not a lot of these U.O. 6mm Orthos out there. I think it's because the ad copy does not list them. Their web page and ads are all inconsistent regarding which focal lengths are available. In any case...,

The eyepiece is superb! Excellent edge correction, sharpness, contrast, superb light through-put, and good eye-relief (non-eye-glass wearer).

A lot has been discussed about how light through put differs between simple versus complex eyepiece designs. Well here's an objective measure.

A friend and I recently zoomed in on the Dumbbell Nebula with a 6mm U.O. Ortho and a 6mm Radian (telescope: 10" f4.5 newt). The Dumbbell has the bright apple core shape, and, with enough light gathering ability, the lobs on either side of the core also appear nebulous -- making the nebula look more like a football. When using the 6mm Ortho the core and lobs were readily apparent with direct vision. When using the 6mm Radian they disappeared completely leaving only the core. I have done similar tests on galaxies and splitting double-stars. In all cases the Ortho proved superior regarding light through put, sharpness of image and detail resolution. Discerning a difference between the eyepieces simply requires that the observer find the threshold of resolution for the "lesser" eyepiece.

Before anyone goes crazy about this post, I have both eyepieces and love my Radian. But there is no doubt that simpler eyepieces (well made ones) allow more light through put and more resolution of subtle detail; at least this has been my real world experience over an over again. This ability to allow more light through put is especially crucial for those using small aperture.

Of course the Radian is more comfortable to use; which may allow you to "see more" -- as some have put it. Eye-relief has never been something that bothers me because I don't wear glasses; if I did I'm sure I would use the Radians.

If your looking for the ultimate in light through put and contrast you simply cannot be an orthoscopic (University Optics or otherwise).

U.O. - $57.95 Televue Radian $228.00

Very Highly Recommended1

Overall Rating: 10
Weight: 3 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.58.223)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43901

University Optics Orthoscopic 6mm
This is probably the sharpest high power eyepiece I own, sharper my 7mm Naglet T6 but not by much and only on the clearest of nights. You give up FOV with this eye piece but nothing else. If your interest lie in planets or even the moon then you could hardly do better at 4 to 5 times the price.

Overall Rating: 10
Optics:9 Value:10
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.127.0)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=406154

University Optics Orthoscopic 6mm
Awesome EP. The eye relief is a tad short and I dont wear glasses either. Getting my eye in position is not an issue and the views are great. This is one of the few EP's that I still have from my "earlier" days in astronomy. I now have EP's from TV and Pentax and this little barn-stormer is staying put. If eye relief isnt an issue, you will love it.

Overall Rating: 10
Optics:10 Value:10
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.253.27)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=143030

University Optics Orthoscopic 6mm
Bright,tack-sharp views and well worth every penny,this eyepiece is must for planetary viewing.

Overall Rating: 9
Optics:9 Value:10
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.197.186)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=66828

University Optics Orthoscopic 6mm
Have one for my Pronto and like it very much . I keep it barlowed 2x for 160x , which is about as good as I can expect in my city viewing area . FOV is not a problem for me as when I use this combination , I am not looking for a wide view but a closer look at something specific , double stars , Moon craters , etc. For $ 60.00 bucks it's a 12 !

Overall Rating: 10
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.49.65)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43912

University Optics Orthoscopic 6mm
This is one of the recent "T" multi-coated models and has very good image quality in terms of sharpness, contrast, brightness, lack of ghosting, and color purity. Fairly narrow FOV, but consistent with other Abbe Orthos of this focal length. The image quality and eye relief are not quite as good, though, as in the 6mm Pentax SMC Ortho. However, it is a very good value for the price.

I've compared quite a few eyepieces in f/5.4 and f/5.3 refractors, and am basing my ratings on image quality, not FOV.

Overall Rating: 9
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.186.238)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43911

University Optics Orthoscopic 6mm
I'm not sure how this compares to any really expensive eyepieces, since I have never used any, but I can sure say this eyepiece is great. Using my MK67, the images are still very bright (300x, 50x per inch). I'm going to purchase the 5 and the 7mm models too. Eye relief and FOV are not a problem to me. Price is great too. The Orion Ultrascopic 7.5 is a great eyepiece too, but it's about $20 more.

Overall Rating: 10
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.34.70)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43910

University Optics Orthoscopic 6mm
One of the best eyepieces on the market today.
As a variable stars observer I am using this eyepiece
in my 6" refractors when a variable star is in dense
field of comparison and other stars.Typical example
is T Draconis when at minimum or T Herculis.
Outstanding sharpness and clarity of this eyepiece
helps to determine magnitude of these stars when
around magnitude 12-13.

miroslav variable stars observer

Overall Rating: 8
Weight: 1 (Unreliable Vote)
Date:
By: Anonymous (xxx.xxx.131.110)
Link to this vote: http://excelsis.com/1.0/displayvote.php?voteid=43909

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