11am - 11pm EST
Monday - Friday
Thank you for visiting Siebert Optics!
Serving Large Observatories and the
Amateur Astronomy Community alike.
200 Short Johnson Road
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Eyepieces From .965" / 1.25" / 2.0" / 2.7" / 3.0" / 4.0" / 4.3"
BT70 RA88 / Miyauchi / Kowa eyepieces
Lenses including: Modular and 4 element Telecentric magnification
1.25" and 2" Advanced Binoviewers From $649-$1999
OCA's and Accessories
Binoviewer Alignment and Supercharge Services
Scopes and ETX
and Small Non Illuminated and Illuminated Cross haired eyepieces.
Large and Small Binocular Cleaning and
Call or Email for details.
Adapters - Universal
Special binoviewer services and products you cant get anywhere else
ICP's Image Correction Prisms for Newts
Large refractor modular OTA's
Hood - light blocking
Themed Fleece Blanket
Accessory Links of
Welcome to Siebert Optics
are Limiting what products we are taking Orders for at this time.
Click here for details.
2.5" up to 4.3"
Click Here or below.<<<
2.5"/2.7"/ 3" 1.5x - 2.5x
Meet a Astrophotographers new best friend.
New Super CCD: (PALS) for short (P)hoton (A)cceleration (L)ens (S)ystem.
Simply connect it stand alone (No Telescope Needed) to the front Of your CCD camera and take
images of the sky at x5 and with 30 second exposures and get results just
like these. (Click Here)
The New 25mm
Black Night FMC.
Read the info within
and you will understand why Nothing even comes close.
Watch this video
Orthos Here Triple-S Series
here for the New 2" T-2 modular Barlows.
Supercharge your Stellarvue, Williams Optics and many others like it.
you want to share the same high End Binoviewing experience as those who
own expensive models from the Big Prism Binos (TV, Denk, Baader) at a
fraction of the cost. Do you already own one of the following binoviewers:
Williams Optics, Orion, Stellarvue, Burgess, Celestron, Moonfish and
Baader 23's etc..... Then you already have what you need to get started.
Why pay $900+ For the privilege of using low power wide field EP's
Click here for
Binoviewer services you can't get anywhere else)
quality, affordable Telescope Optics such as Eyepieces, Barlow Lenses, Image
Diagonals that focus.
Power Illuminated Focusable Eyepieces,
adaptors for all telescopes including the PST.
Adaptors so your filters fit your eyepieces Adaptors
so your Diagonals fit you scopes. and
a variety of different size of high quality Binoviewers
and OCA's for all Binoviewers (for comfortable two eye viewing) and
other binoviewer accessories.
More things of
interest Delrin 2" 1.25" T - 2 or T
thread End Caps.
free to check out our site. If you have any questions, please feel free
to ask either via email or phone (1-919-553-3980). Harry will try to answer any
questions you may have as promptly as possibly.
here to go to the OCA and binoviewer corrector page.
Universal 1.3x and Zero mag OCA's above. This means you can
use any binoviewer with little or no magnification added. Always see it
here first. This technology, although similar to the OCS technology,
has different characteristics and applications.
Here to go to the PST and H-Alpha bino corrector page.
Reviews on Black Night Binos
Check out the
Elite Series 2" binoviewers.
Siebert Optics 2" Binoviewer 's come standard with self centering
compression eyepiece sockets similar to TV and The older BW Optics
out this independent Diagonal calculator if you want too know more
APERTURE will buy you.
60 day money back guarantee on Black Knight units
are not taking new orders at this time
for Binoviewers/ OCA correctors/ Packages/
VP and Elite binoviewers and large
format Eyepieces/Diagonals at this time. There may be some items available
beside those items mentioned. So please email for availability of
We are now working on filling existing orders
already received. So if you already had an order in before (Oct 6 2013) it
will be filled in the order in which it was received.
We will now be clearing a portion of the
back log of 45mm Elite binoviewers and large format Eyepieces/Diagonals
now on order.
If you want to order something from this website
other then the items mentioned then you can put in an online order but you
will receive a notice that your order is on backorder and will be filled
at a later time when the items become available again..
We are sorry for the inconvenience but we are
trying to be fair to those that have already placed orders. We hope to be
back filling regular orders as soon as possible.
Harry SIebert owner of Siebertoptics.
Certificates are available for any amount you may wish.
email or phone and ask how you can obtain one.
Page for All OCA's including Low power" correctors
Baader, Burgess, WO, Stellarvue, Celestron, Orion,
BC&F, Binomate and the like. More info..
is the 2" Ultra barlows similar to the TV powermate.
Also look at
the new modular element barlows for 3 magnifications in one barlow.
Camera adaptors for
both 1.25" and 2" focusers and your most demanding
applications. These will work with any telescope-camera-eyepiece
series are unmatched for the price in performance. Edge is flawless at
F/5 and even below.
Ultra series are
the perfect blend of Eye Relief and Wide FOV. Sharp in fast scopes and
comfortable to look through. Try one you'll like them.
you need an Inch" Check this out. Zero
mag Camera Focus adaptor It will give you 1 inch of focus free of
magnification. And help with coma.