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SharpStar 94EDPH for visual + binoviewer MOD

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#1 denis0007dl

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Posted 25 October 2023 - 07:55 AM

Decided to try out that one for visual.

 

Very nicely made telescope.

 

 

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#2 denis0007dl

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Posted 25 October 2023 - 07:56 AM

Look at objective...

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#3 denis0007dl

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Posted 25 October 2023 - 07:57 AM

With binoviewer mode, Im just barely able to reach focus in straight view.

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#4 denis0007dl

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Posted 25 October 2023 - 07:58 AM

I also get original reducer to try fo visual.

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#5 denis0007dl

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Posted 25 October 2023 - 07:58 AM

Reducer lens...

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#6 denis0007dl

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Posted 25 October 2023 - 08:00 AM

To be able reach focus with binoviewers natively without GPCs etc, and with any diagonal, I cut/shorten 9.5cm tubus.

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#7 denis0007dl

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Posted 25 October 2023 - 08:00 AM

New thread made on shortened tubus...

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#8 denis0007dl

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Posted 25 October 2023 - 08:03 AM

Finally tubus shortened and here is how looks scope when dew shield retracted.

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#9 denis0007dl

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Posted 25 October 2023 - 08:06 AM

Focuser in original setup is good.

 

After I lubticated it with Nyogen 767A in focuers mechanism, now focuer works fantastically, and its super strong, and no need of bottom locking screw at all.



#10 denis0007dl

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Posted 25 October 2023 - 08:07 AM

Finally adding binoviewer with 2" diagonal...

Very happy with result.

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#11 denis0007dl

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Posted 25 October 2023 - 08:21 AM

Head by head with my TS-CF 130mm APO.

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#12 KrisJot

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Posted 25 October 2023 - 08:52 AM

Hi Denis,

nice set, I like this deep red color of the clamps🙂. About the reducer, based on my best knowledge this reducer also serves as a field corrector. It is astrophotography dedicated where the distance from the rear corrector lens to the camera matrix plane is strictly defined. Then it fulfills its role and correctly corrects the field curvature. However, when using bino, you will significantly increase this distance and cause deformations of the field plane. This effect will be most visible near the edge of the field of view. When building the Planetary Newton, I faced a similar difficulty. I found another solution that allowed me to compensate all the backfocus needed for bino. Finally after talking to Harry Siebert, I ordered a 1.0 and 1.3x optical path corrector, which works great. In your case, You will not need as advanced one as mine (can work with the Newtonian reflector and refractor). For You I think simpler one with mode 1.0 should be enough.


Kris

Edited by KrisJot, 25 October 2023 - 08:53 AM.


#13 denis0007dl

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Posted 25 October 2023 - 09:06 AM

Hi Kris,

 

corector works good with monoviewing straight mode. With binoviewer, Im still playing to see what results I can achieve.....



#14 RAKing

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Posted 25 October 2023 - 10:48 AM

Nice work, Denis!  waytogo.gif

 

Ron



#15 denis0007dl

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Posted 25 October 2023 - 10:54 AM

Thanxs Ron!
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#16 denis0007dl

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Posted 31 October 2023 - 09:52 AM

Replaced/upgraded 2" telescope end with Baader Ultrashort one.

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#17 denis0007dl

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Posted 20 January 2024 - 12:53 PM

https://www.cloudyni...ons/?p=13094801




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