University Optics Konig MK-70 25mm

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Brand and Model:University Optics Konig MK-70 25mm
Price ($USD):$179.95
Type:Misc Wide Angle
Focal Length:25 mm
Barrel Size:2 in
Apparent FOV:70.0 degrees
Field Stop Dia.:0.0 mm
Eye Relief:0 mm
Elements:6
Weight (lbs):1
Description:

Vote Highlights Vote
University Optics Konig MK-70 25mm
This is just a super eyepiece. Nice dark back ground, pin point stars. Contarst is right on.I use it in my 11" sct and it really works well for me. If it has a down fall at all, it's edge
of field. The last 5 or 10 % kind of falls off a bit. Like they say, I'm not looking at the edge. Compared to a Nagler,
well it's not, but it's so close I'll take it over one any day of
the week. The price justifies that I do. The differance of the
two is not near enough to make me fork out the extra $300
bucks for the Nagler. I'll say the same about the 40mm Konig
too.

Overall Rating: 9
Optics:9 Value:10
Weight: 13 (Trustworthy Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=289207

University Optics Konig MK-70 25mm
great quality, great optics, great value!
a little soft at the edges but only about 30% the rest is really good. highly recommended!

Overall Rating: 9
Optics:9 Value:9
Weight: 10 (Trustworthy Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=109124

University Optics Konig MK-70 25mm
really nice eyepiece! good on planets with a barlow, galaxies,& star clusters are outstanding!! i own a meade 12.5" 4.8 dob and am very impressed with the performance of this eyepiece! looks good & performs extremely well. stars are sharp to about 70 to 80 percent of the 70 degree field, it dosnt get any better than that at 4.8!!! dont pass this one up!. highly recommended! less than the tv panoptics, radians, & naglers & stacks up well in every area against them!! try one of these truely wonderful eyepieces, you wont be disapointed!

Overall Rating: 10
Weight: 4 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43486

University Optics Konig MK-70 25mm
I have read comments that run the gammout on this EP and I bought it thinking I was getting a EP of great value and great performance. Here's what I found.

I have a MN-71 f/6 in a carbon fiber tube on a GM 8 mount. Thats a 7" Mak Newt with a pyrex main that is 1/8 wave and a strehl of .96. The Secondary is astrocital ("zero" expansion ceramic substrate) and was hand tested and certified by Mike Paleramiti. Not bragging but just letting you know its not a $400.00 Orion reflector. (of which I also own.)

This was my first 2" occular and I was very impressed. It has great resolution and contrast in the center FOV and the stars are truely pinpoints...in the center FOV. Towards the edge its really starts to suffer. Its at about the 30% of the outer edge the stars have little tails...which at the time was tolerable. Barely..I did pay $180 plus shipping.

Then I put in a Nagler......oh my..... 80 degree FOV and tack sharp to the VERY EDGE. I split the double double and let it track out of the FOV....the double was a clean split right off the edge out of view. Bought a Pentax smc XL and same thing. Perfect split at 110 X and watched it track out of view and the split was perfect until out of view. Truely tack sharp across the entire FOV.

The point of all of this yacking.... The mk-70 is a good/OK Ep, but a TV or Pentax wide FOV its not. It appears from the other postings that if you have a slow scope, say f/10 or greater, then it might be OK. Bottom line is, use one in your scope to make sure it works for you. At nearly $200 its not cheap EP. (for me anyways). You can get brand new Pentax's for just about the same price and the performance is night and day. The Panoptics by TV are about twice that and their performance is flawless as well in my scope. Not plugging for Pentax or TV, just giving you my honest opinion and hopefully some good info. Id give it a true 8.5 if possible.

Clear skies,
erich

Overall Rating: 8
Optics:8 Value:8
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=143027 

p.s. I have a 6mm UO orthoscopic and its a killer EP. Delivers wonderful views and competes with any EP of this focal length at any price. UO does make some really great EP's that are worth 2-3 times what they charge.
University Optics Konig MK-70 25mm
Wonderful eyepiece! The only complaint I have is that it is threaded both ends for 49mm filters and accessories instead of the much more common 48mm thread!

Overall Rating: 9
Optics:9 Value:9
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=142912

University Optics Konig MK-70 25mm
I've been using this eyepiece now for about four months and have been consistantly pleased with it's performance. On my F-10 SCT w/ 2350mm focal length ( approx 94X ) edge performance is still very good. Light transmission is also very good. The fact is, this is probably my most frequently used eyepiece. Also, it's worth noting that University Optics provides great service, and prompt shipping. If they don't have it in stock...THEY TELL YOU! Now how's that for a novel concept. Also, Jan has discourged me from purchasing items he doesn't feel are a good match for my optical tube...and his recommendations have been spot on to this point. Not a whole lot else to say, good product at a fair price, great service, fast shipping, and you get to talk to someone who knows what they are talking about! This is my fourth purchase from Jan @ University and I've yet to be dissapointed.

Overall Rating: 8
Optics:8 Value:9
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=136718

University Optics Konig MK-70 25mm
I have 30 years experience in astronomy. The UOptics abbé style orthoscopic eyepieces are really excellent and I was persuaded to test some of the 2" barrel UOptics konig eyepieces.

The Mk70-25mm is a beautifully constructed and visually pleasing eyepiece with a large eyecup (same as the 34mm Axiom eyecup - a camera hood!) and a solid chromed barrel threaded to hold filters. It is rather heavy as would be expected, but half the weight and cost of a Panoptic 35mm.

Optically, the eyepiece is so-so. UOptics advertising a wide field of view, one would expect the stars to stay focused to the edge. They don't. Images become distorted in the outer third of the field of view, making this eyepiece less useful for wide-field viewing than eyepieces of similar cost, such as the Axiom 34mm by Celestron.

This is basically an erfle-type eyepiece and although beautiful to look AT, it is not great to look THROUGH. I don't recommend it and you will see many "konig" eyepieces for sale on the used market...

Michael J. Spicer,
Royal Astronomical Society of Canada
Hamilton Centre

Overall Rating: 6
Optics:6 Value:5
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=111860

University Optics Konig MK-70 25mm
[webmaster note: vote moved from description]

Just a great eyepiece on deep-sky objects like emission and diffuse nebulae and as well as globular clusters. in my 10f/9 dob scope it showed stars clear and sharp to the edge of the fov. it is very lightweight for a 2inch eyepiece and i got it very fast in 3 days. Great service and product.

Overall Rating: No Vote
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=93945

University Optics Konig MK-70 25mm
Another great value from uo! wonderful widefield views! clear to the edge in a 8" f10 scope. crisp views. highly recommended!

Overall Rating: 10
Optics:10 Value:10
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=66463

University Optics Konig MK-70 25mm
Its a keeper . in my 10f/9 scope the stars to the edge are pinpointed with no astigmatism or coma seen. Its a great emission and diffuse nebular eyepiece as well as for globular clusters. Its very light at 15 ounces and the eye relief is not bad for non -eyeglass users. i feel just as good in performance as a TV-27mm Panoptic especially any scope over f/8 and slower f/ratios. Service is the best too with jan as the owner. Thanks telescope8@hotmail.com

Overall Rating: 10
Weight: 1 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43487

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