Harry Siebert Optics Standard 21mm

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Brand and Model:Harry Siebert Optics Standard 21mm
Price ($USD):$49.00
Type:Ultra Wide Angle
Focal Length:21 mm
Barrel Size:1.25 in
Apparent FOV:80.0 degrees
Field Stop Dia.:0.0 mm
Eye Relief:7 mm
Elements:3
Weight (lbs):0.3
Description:

Vote Highlights Vote
Harry Siebert Optics Standard 21mm
Says 80 degree? Im not so sure but is a really nice high definition eyepiece! for the budget minded its woth it!

Overall Rating: 8
Optics:8 Value:8
Weight: 10 (Trustworthy Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=109107

Harry Siebert Optics Standard 21mm
Hello,

I bought this, my first Harry Siebert, EP in Germany.
I'm use it with a 8" f/6 DOB and i'm very satisfied! This EP needs a lot of outfocus, I reaching nearly the end of my focusers way but it works. And it works great! Of course, some distortion at the rim of the mega FOV but more in the middle pinpoint stars and a really good look. I love it. The eye-relief is a little bit short, but no problem. Very good EP!

Willi Warkowski
warkowski@netcologne.de

Overall Rating: 10
Optics:9 Value:10
Weight: 6 (Veritable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=139852

Harry Siebert Optics Standard 21mm
first of all this is the fastest i ever
received a mail order. forget the meades/forget the telvues i"ve had them all nothing compares or comes close to the image quality of this eyepiece at this price he is giving them away had a 9mm nagler i'd rather take a space walk
for $40 than $360.thanks harry.

Overall Rating: 10
Optics:10 Value:10
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=58374

Harry Siebert Optics Standard 21mm
Very sharp ep, almost to the edge of field in my Pronto and DGM OA-4.

Very crisp images. In shaprness and edge correction, the ep kills my Meade 26mm Super Plossl, is equal to my TV 20mm Plossl (but has 80*AFOV compared to 50), just as sharp and nearly as contrasty as my 18mm Radian, and much sharper than my Konig MK-70 25mm. Due to it's sharpness and contrast, it has replace the afformentioned ep's in the collection I actually use.

Looking at the ep, you'd never know it has such fine optics. A real steal!

It's too bad the initial run of these ep's had poor field lenses (see earliest reviews). It's these early reviews that are bringing the average rating down-- most people have rated them 9 or 10. The optics have long since been changed and are far superior to the early version.

Overall Rating: 10
Optics:10 Value:10
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=55492

Harry Siebert Optics Standard 21mm
Had this e.p. for exactly one year and it is excellent. very rugged, holds up well in dark, cold desert sites. Was my first Widefield e.p., and I was amazed. Sharp all the way to the edge. Optics are a little dark for city-viewing, but great for finding small fuzzies at a dark-sky site. A great "hidden-value" - 21mm for 80 degrees apparent field at $40!

Overall Rating: 9
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43452

Harry Siebert Optics Standard 21mm
21 mm at 80 degrees!! wow !! great eyepiece!! as good as a nagler!! no it is better opticly. ive owned 7mm, 9mm, & 22mm naglers & am very impressed with this eyepice!! ill never spend $ 180.00 to $ 460.00 for a uwa again! why would you when you can buy one of these at 1/6 to 1/8 the cost for the same performance. very light & rugidly built. superior optics. will never ever go back to anything else but siebert optics. vpdwl@aol.com

Overall Rating: 10
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43451 

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Hmmm.....better than a Nagler?  All of these "anonymous reviews" sound a bit like advertisements. 

These EP's are definitely not as good as naglers.  They show lots of field curvature, have poor contrast, and exhibit lots of ghosting.

Anyone who has ever used a nagler can clearly see the difference. I have yet to see a Siebert eyepiece of comparable quality.

-G. Gagherty  

>21 mm at 80 degrees!! wow !! great eyepiece!!  as good as a nagler!! no it is better opticly. ive owned 7mm, 9mm, & 22mm naglers & am very impressed with this eyepice!!  ill never spend $ 180.00 to $ 460.00 for a uwa again!  why would you when you can buy one of these at 1/6 to 1/8 the cost for the same performance.  very light & rugidly built.   superior optics.  will never ever go back to anything else but siebert optics. vpdwl@aol.com
Harry Siebert Optics Standard 21mm
I bought this eyepiece about a month ago and waited to post until I had a chance to get used to it and view through other EP's like Naglers, etc.
What I have found is that I use this EP a lot as a big picture EP. My 32mm Plossel provides a bigger view but has less contrast and misses a lot of detail. I enjoy using this EP a lot but it is not pefect. For the price I would rate it a 10+ but eye relief vs. FOV makes the 85* technically accurate but not as you might wish. If you buy this EP don't expect 85* to be in view all at once like software programs Starry Night Pro show based on the numbers.
Don't be dissapointed either because what you wish for doesn't really exist for any price, for a given scope. I am greatful to Harry for providing this EP and wish he made a 32 to 40mm version. I only drop it to 9 from 10 because there is no threaded portion for filters. It DOES work with filters but it can be challenging to get it threaded straight.

Greatful to Harry for a great product,
Mike

Overall Rating: 9
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43450

Harry Siebert Optics Standard 21mm
Nice and sharp almost to the edge. Works well with barlow. Good color nothing that shouldn't be there. Very bright field with lots of contrast espescially good in dark sky areas. Seems to be well made and pretty rugged. At this price you really can't go wrong

Overall Rating: 9
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43448

Harry Siebert Optics Standard 21mm
Feb 4, 2001. I used the Harry Siebert new matched 21mm eyepieces that were included the Siebert Binoviewer [seen on EBAY for only $399 including the matched pair of 21mm SWAs] last night on my 17.5" 'fast' f = 4.1 Dobsonian. I was astonished -- very impressed, to say the least! The Siebert SWA 21mm eyepieces must have been improved (other reviews) because they were fantastic -- on the whole, IMO, every bit as good as using a pair of TeleVue Panoptic 19mm eyepieces in BinoViewer. This may be hard to believe, but I actually prefer the Siebert 21mm pair over 19mm Panoptics because of the annoying "blackout" problem with the Panoptics (the Panoptics are fussy about positioning the eye just right when looking into the eyepieces). Jupiter and the moon at 170X (1.15X Paracorr, 1.7X barlow inside Siebert BinoViewer and 21mm eyepieces) appeared equally sharp and detailed with the Harry Siebert 21mm and with the TeleVue eyepieces (HS 21mm SWA eyepieces produced a clear view to near the edge of the FOV while viewing the moon, I thought). Looking at the moon, the Siebert optics showed no false color, or the 'flare' seen with other optics I've used. Especially if cost is considered, Siebert is the obvious choice, even over TeleVue in this case. I just can't see spending several times more money for TeleVue EPs. IMO, the Siebert BinoViewer is recently much-improved too -- I did not see a difference in image quality from when I looked through a TeleVue BinoVue - that's saying a lot for H.S. optics.

Overall Rating: 10
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43445

Harry Siebert Optics Standard 21mm
I've been using this eyepiece for over a year and it's great! The views are clear to the edge. This and the Siebert 12mm are my favorites. I'd recommend these eyepieces to anyone.

Overall Rating: 9
Weight: 3 (Unreliable Vote)
Date:
By:
Link to this vote: http://www.excelsis.com/1.0/displayvote.php?voteid=43443

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