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         Products:

Eyepieces .965" / 1.25" / 2.0" / 2.7" / 3.0" / 4.0" / 4.3"

Large and Small Binocular Cleaning and Alignment services $99 Call or Email for details.

BT70 RA88 / Miyauchi / Kowa eyepieces

Binoviewer Alignment and Supercharge Services

Advanced Barlow Lenses including: Modular and 4 element Telecentric magnification multipliers

1.25" and 2" Advanced Binoviewers From $649-$1999

 Binoviewer OCA's and Accessories

Adapters - Meade Scopes and ETX

Binoculars - Quality Modified

Large and Small Non Illuminated and Illuminated Cross haired eyepieces.

Astrographs/Telescopes

Camera Focus Adaptors

Camera Adapters - Universal

H-Alpha Focus Accessories

Converters

Special binoviewer services and products you cant get anywhere else 

Also can  >  Click here.   And here.

ICP's Image Correction Prisms for Newts

Diagonals

Extension Tubes

Large refractor modular OTA's

Eyepiece Comparisons

Focal Length Reducers

Miscellaneous

Planetary Fleece Blanket 

PST Accessories

Telecentric Barlow Lenses

Zero Magnification Adapter

Ladies Corner

Saturn Earrings  

Astronomy themed totes/purses

Free Domain Pictures

Astronomy Accessory Links of 

       products not offered 

       by Siebert Optics

Useful Astronomy Links

International Dealers

Astro photos

Non-Astronomy Items

      Fabrics

      Purses

Not bad for unedited and unstacked snapshots  These are through a PST and other scopes

And trust me I am a beginner in Astrophotography Click on Pictures below. If anything below is unclear Just Email or Call with questions.

These below are for F4 and Higher  Under F4 Click here.

Easy camera focus for For the P.S.T. + All Solar scopes: 1.25" 1.5x-2x Magnification Camera Focus Adapter. 

This device will allow focus in any telescope. It has T-2 or C-Mount to attach to your camera and has a 1.25" shaft to attach to your scope. The magnification starts at only 1.5x. 

 Starting at $149 - Click Here

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These are similar in appearance to my Binoviewer OCA series.

 (2") 1x Magnification Camera Focus Adapter for all Dobs and Refractors $279(1xsdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 3" free focus. More below.

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(2") 1.3x Magnification Camera Focus Adapter for all Dobs and Refractors $279(1.3xsdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 3" free focus.

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(2") 1.5x Magnification Camera Focus Adapter for all Dobs and Refractors $279(1.5xsdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 3" free focus.

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(2") 2.0x Magnification Camera Focus Adapter for all Dobs and Refractors $279(2xsdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 4" free focus.

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(2") 1x - 1.5x - 2x -  Magnification Camera Focus Adapter for all Dobs and Refractors $458 (1to2xsdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 4" free focus.

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Look for the special Refractor/Dob/PST Camera Focus Adapters below. 

 For all scopes except PST: 1.25" 1.25x Magnification Camera Focus Adapter. 

This device will allow focus in any telescope but the PST. It has T-2 or C-Mount to attach to your camera. On the other side it has a 1.25" shaft to attach to your scope.    The magnification is only 1.25x.  Increases focus 1" - 2"

$169 (1.25x-adp)  C-Mount or T2 attachment

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 (1.25") and (/2")

Zero Magnification Camera Focus Adapter for all Dobs and refractors. See below  Refractor  model 1.25" $169 (0xs-REF) Shown in pictures below. Dobs/Newts $169 (0xs-dob/tube) Dobs/ Newts requires extension tube. If you request the 2" model add $79. These are mainly for cameras and will not fully illuminate a low power 2" eyepiece out to the edge. Will work well with cameras with a 35mm chip size.

  Provides 1" of extra out travel focus for all your visual and Photographic applications.

In the picture below you see this little adapter that you thread into the front of your 1.25" Diagonal 

Great if your scope has limited in focus. For viewing or photographing applications including  H-Alpha.  It operates invisibly while flattening your field a little while it lifts out your focus. If you are not completely satisfied with it's performance return it within 60 days for a refund.  

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Combo model: Use it in you Newt or just thread it in to your Diagonal.

Shown installed below.

These are for Under F4 Down to F2.8

These are similar in appearance to my Binoviewer OCA series.

 (2") 1x Magnification Camera Focus Adapter for all Dobs and Refractors $349(1xLdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 3" free focus.

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(2") 1.5x Magnification Camera Focus Adapter for all Dobs and Refractors $349(1.5xLdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 3" free focus.

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(2") 2.0x Magnification Camera Focus Adapter for all Dobs and Refractors $349((2xLdob-Ref)xLdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 4" free focus.

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(2") 1x - 1.5x - 2x -  Magnification Camera Focus Adapter for all Dobs and Refractors $549(1to2xLdob-Ref) With C-Mount or T-threads camera attachment or 2"/1.25" eyepiece socket. It gives 1" - 4" free focus.

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