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For Standard 1.3x and Multi Magnification OCAs for Newtonian/Refractor for all 1.25" Binoviewers. Baader/TV/Denk/BW-Optics and all others. See Pic's 1 - 19

 Regular 1x and Multi Mag OCA's click here

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New 38mm CA 1x and 1.3x and Multi Mag OCA's click here

 

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Pic 1

 

Pic 2

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Pic 4

Pic 5

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Pic 7

 

Pic 8

 

Pic 9

 

Pic 10

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Pic 12

 

Pic 13

 

Pic 14

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Pic 19

 

 

 

 

 

 

 

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Larger Aperture 38MM OCAs 

Instructions 

IMPORTANT :If you purchased your OCA before February of 2018 these instructions have since been updated and simplified. Revisit them and look for the changes that have been made. They are now explained by Magnification of the OCA instead of model number. Also the #6 cell designation has been dropped and now all cells will be marked #4 and the magnification is also stamped on the cell.

 Use the sections below to set up your OCA. In the sections the numbers are the OCA threaded components that connect together. #1 would be the top of the OCA that connects to the binoviewer. The sections will reference pictures and videos that will give visual illustrations.

First ---Watch these orientation Videos:  (Video #1, Video #2, Video #3) Youtube versions >> Video #1 and Video #2Video #3 youtube
 #5 ring mentioned in the Video #3 is mistakenly said to be #6

Second
---Look at all the component numbers that make up these OCAs because they all include the same common components. These being Numbers #1,2,3,4,5 although not in that order.

1.3x OCA  for Dobs and refractors.
(Dobs/newt)
1.3x part order = 1-5-2-3-4 (4=optic cell) (#5 is the connecting ring).(See Pictures 1 and 2) And Video #1) or Video #1 Youtube.

(Refractor) 1.3x=(1- In EP holder)(4-3 - In nose of diagonal) See Pic. 7, 8 Video #2  or Video #2 youtube For shallow nose diagonals like Baader use Alternative setup (4-5 or 5-4  - In nose of diagonal)First See Pic 10b, 13 or Last See Pics 10, 11, 12 -- #5 is the connecting ring. Exclude other pictures not mentioned.

 1.5x OCA  for Dobs and refractors.
(Dobs/newt)
1.5x part order = 1-5-2-3-4 (4=optic cell) (#5 is the connecting ring).(See Pictures 1 and 2) And Video #1) or Video #1 Youtube.

(Refractor) 1.3x=(1- In EP holder)(4-3 - In nose of diagonal) See Pic. 7, 8 Video #2  or Video #2 youtube For shallow nose diagonals like Baader use Alternative setup (4-5 or 5-4  - In nose of diagonal)First See Pic 10b, 13 or Last See Pics 10, 11, 12 -- #5 is the connecting ring. Exclude other pictures not mentioned.

1x OCA  This OCA is not specifically recomended for Dob/Newt Type scopes**
(Dobs/newt) 1x = 1-5-2-3-4 (See Pictures 1 and 2) And Video #1) or Video #1 YoutubeWill require some intravel.

(Refractor) 1x = (1- In EP holder)(4-5 - In nose of diagonal) See Pic. 13 Also For increase out travel use Alternative setup (5-4 - In nose of diagonal)see Pics. 10,10b, 11, 12    Then watch (Video #3)  Or Video #3 youtube  #5 ring mentioned in the Video #3 is mistakenly said to be #6 --See also "Concept" Video #2) or Video #2 youtube
2x Multimag OCA

(Dobs/newt) 2x = 1-5-(2 or 3)-4 (4=optic cell) Remove excluded components.(See Pictures 1 and 2) And Video #1) or Video #1 Youtube

(Refractor)  2x =(1- In EP holder)(4-3 - In nose of diagonal) See Pic. 7, 8 Video #2 or Video #2 youtubeFor shallow nose diagonals use Alternative setup.(4-5 or 5-4  - In nose of diagonal) See Pic. 13 or Alt setup for short nose diagoanls See Pics 10, 11, 12  ("Concept" Video #2) or Video #2 youtube

 

 
 
 

Saved video links below
------------------------------------------

See the Videos below for more breakdown info.
They are for the Elite bino OCA but also in principle apply to All the 38mm CA OCAs


Video #1  http://tinyurl.com/kvrcel5   ---Dob/Newt

Video #2
http://tinyurl.com/nxvsho7 -
--Dob/Newt

Video #3 http://tinyurl.com/mobqpes ---Dob/Newt


Pictures below.

**The 1x OCA
is







**The 1x OCA is
not specifically recommended for Newtonian type telescopes. The reason is the device would need to be made longer then the default arrangement is set up for. The length of the OCA is optimized for the 1.3x OCA and more powerful. The more powerful the OCA the shorter it can be hence you can remove some components. The 1x would need add another 10mm-20mm to the OCA to be close to par-focal on Newt type scopes. This might also create an incursion in the OTA of the telescope. Not a problem in low power viewing but some people don't like it':)
 
If you really want to use the 1x OCA with a dob/newt let me know. A customized OCA can be made. Let me know what binoviewer and telescopes specs we will be dealing with. 919-553-3980 or harrysiebert@nc.rr.com

 

 

 

 

 

 

 

 

 

Pic. 1 below

 Click on pictures below to enlarge.

Pic. 2 below

 

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Pic. 10b

 

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Pic. 16 Click on picture below.

 

 

 

 

 

If a video in the sections









If a video in the sections are refered to as "concept" videos this means that the video is included to give you an idea of the concept of what to do. Use the pictures referenced for exact details and components information of the setup. If the word "Concept" is not used, the video will apply to that exact setup.

Video #2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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