H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Frankenscope? Let's see it!***be advised that NOTHING in this forum has been safety tested and you are reading and using these posts at your own peril. blah, blah, blah... dont mess around with your eyesight when it comes to solar astronomy. Use appropriate filtration at all times...
User avatar
marktownley
Librarian
Librarian
Posts: 31044
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 4476 times
Been thanked: 1978 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by marktownley »

Love it! I enjoy a bit of modding and building like that myself.


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Hi Mark,

Me too ... because man / woman knows what you have. :D

The last adapter comes on Wednesday ..... waiting. :movie
C-ERF 135mm.jpg
C-ERF 135mm.jpg (615.08 KiB) Viewed 6164 times
Half Bino.jpg
Half Bino.jpg (1.18 MiB) Viewed 6164 times
Zenit.jpg
Zenit.jpg (1.37 MiB) Viewed 6164 times
Coffeetime.jpg
Coffeetime.jpg (965.61 KiB) Viewed 6164 times


User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Still waiting ..... My metalworker only managed to make the adapters after Easter ..... a very lucrative order came in between.

:movie


User avatar
Rusted
Almost There...
Almost There...
Posts: 627
Joined: Fri Jan 19, 2018 11:00 am
Has thanked: 1647 times
Been thanked: 414 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Rusted »

Is there any difference between these specialist, bino diagonals and nested pairs of "normal" star diagonals?


http://fullerscopes.blogspot.dk/

Baader 160mm D-ERF, iStar 150/10 H-alpha, Baader 35nm H-a, Beloptik KG3, PST etalon, Lunt B1200S2, Assorted TS GPCs, ZWO ASI174.
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

What do You mean with "normal star diagonals" ?

The Mirror-System ?

http://ems-bino.com/ems-product-line-english/

Yes, a big difference.
The image is like a pair of binoculars, upright and sideways ..... very important for our brain.


User avatar
Rusted
Almost There...
Almost There...
Posts: 627
Joined: Fri Jan 19, 2018 11:00 am
Has thanked: 1647 times
Been thanked: 414 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Rusted »

Solar-Cologne wrote: Fri Apr 10, 2020 8:59 am What do You mean with "normal star diagonals" ?

The Mirror-System ?

http://ems-bino.com/ems-product-line-english/

Yes, a big difference.
The image is like a pair of binoculars, upright and sideways ..... very important for our brain.
Thanks. I saw these mentioned years ago on CN and by Dave Trott.
I believe they were described as "lazy diagonals."
A high degree of precision seems to be required.
If you have to ask the price you can't afford them. ;)


http://fullerscopes.blogspot.dk/

Baader 160mm D-ERF, iStar 150/10 H-alpha, Baader 35nm H-a, Beloptik KG3, PST etalon, Lunt B1200S2, Assorted TS GPCs, ZWO ASI174.
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Tatsuro Matsumoto in Japan builds very high precision.

It is not for nothing that Markus Ludes / APM and Matthias Wirth use often this EMS 60 ° two-mirror system.

https://www.cloudynights.com/topic/6654 ... 1200-bino/
https://www.apm-telescopes.de/de/ferngl ... o-152.html
http://www.astro-messe.de/AME2018/neuhe ... eiten.html

sunny Greetings
Achim


Solar B
Ohhhhhh My!
Ohhhhhh My!
Posts: 185
Joined: Mon Jul 27, 2015 9:29 am
Location: Dunfermline , Scotland
Has thanked: 22 times
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar B »

Now your talking this looks like a great quality rig Achim :bow to

The PST BFs are actually 6mm it was only the very first ones from 04 that were 5mm.

I case you don't already know you may well have to apply some heat to your PSTs threadlock

with a good hairdryer to loosen it.

Brian


" Gentlemen only ever use Refractors "
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Hello Brian,

Nothing works with my hair dryer.
I'm looking for a hot air gun and big water pump pliers.

sunny Greetings
Achim


User avatar
marktownley
Librarian
Librarian
Posts: 31044
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 4476 times
Been thanked: 1978 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by marktownley »

Solar-Cologne wrote: Sun May 03, 2020 6:57 pm I'm looking for a hot air gun and big water pump pliers.
I like your style ;)


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
Solar B
Ohhhhhh My!
Ohhhhhh My!
Posts: 185
Joined: Mon Jul 27, 2015 9:29 am
Location: Dunfermline , Scotland
Has thanked: 22 times
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar B »

Best of luck Achim ... I had a PST EP holder and spacer loosen in my hands this evening ,

the threadlock just fell to the floor .... and it is my original PST from 2005 😃

Brian


" Gentlemen only ever use Refractors "
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Hello friends of the sun.

I went on vacation for several weeks in the German Eifel, near Laacher See.

After several attempts to solve the second PST etalon, I finally found a locksmith that has all the tools necessary to solve Locktite bonds.

The locksmith told me that we need at least 300 degrees Celsius for Locktite.
I got a little scared.
So we clamped the PST box in a large vice and I heated the etalon all around with a digitally adjustable hot air dryer.
We then took a pair of rough pliers and tried to loosen the etalon ..... no, no chance.
2nd attempt, warmed up again and tried with an approx. 80cm pipe wrench ..... finally the bond came off ....

Coronado....did a very good job.

My joy was very great, however, some mechanical traces were visible on the etalon, but it remained intact. :bow

Now we have a cloud period here ..... laugh.
It is always the same before a "first light".

Now I have to attach the second C-ERF (160mm) in front of the second refractor and wait for our sun .....

Sunny Greetings
Achim
Etalon-01.jpg
Etalon-01.jpg (605.29 KiB) Viewed 1418 times
Etalon-02.jpg
Etalon-02.jpg (604.87 KiB) Viewed 1418 times
Etalon with Adapters.jpg
Etalon with Adapters.jpg (590.96 KiB) Viewed 1418 times


User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Well, finally, adapt the 160 C-ERF to the 6 "lens.

It is an aluminum lightweight construction by Matthias Wirth.

I attached two small plastic washers to one of the retaining screws so that the ERF does not sit flat on the lens to avoid internal reflections.
Since the frame is a bit larger, I cut four spacers and fixed them in the frame by 90 °.
Then package tape had to be used again ...... laugh.
It works very well.

Now the Bino is complete and we are waiting .......for our lovely SUN. :D
160er C-ERF-01.jpg
160er C-ERF-01.jpg (235.58 KiB) Viewed 1263 times
160er C-ERF-02.jpg
160er C-ERF-02.jpg (289.02 KiB) Viewed 1263 times
160er C-ERF-03.jpg
160er C-ERF-03.jpg (271.58 KiB) Viewed 1263 times
160er C-ERF-04.jpg
160er C-ERF-04.jpg (207.27 KiB) Viewed 1263 times


User avatar
marktownley
Librarian
Librarian
Posts: 31044
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 4476 times
Been thanked: 1978 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by marktownley »

Nice to hear things are developing with the project!


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

Hello Sun Friends.

The H-Alpha Bino is finally done.

The Bino won no beauty award ..... :)

It works ......

but the look insight into all tested eyepieces is much too restless with the PST Blockingfilter and the Zeiss-Abbe Barlow.
It is not possible to observe with two eyes ..... too bad.

I am a little frustrated.
Bino fertig-01.jpg
Bino fertig-01.jpg (291.39 KiB) Viewed 1191 times
Bino fertig-02.jpg
Bino fertig-02.jpg (516.96 KiB) Viewed 1191 times
Bino fertig-03.jpg
Bino fertig-03.jpg (533.69 KiB) Viewed 1191 times
Bino fertig-04.jpg
Bino fertig-04.jpg (467.78 KiB) Viewed 1191 times
Last edited by Solar-Cologne on Mon Jul 13, 2020 12:26 pm, edited 1 time in total.


User avatar
Solar-Cologne
Ohhhhhh My!
Ohhhhhh My!
Posts: 119
Joined: Tue Nov 10, 2015 8:57 am
Location: Cologne-Public-Observatory / Germany
Been thanked: 11 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Solar-Cologne »

I tested another variant on Sunday.

I temporarily installed my Lunt BF 1200 Blockingfilter on the left side.

Wouw .... the view is much calmer and you can directly see through the eyepiece without Barlow.

Now I have to save to buy a second Lunt BF 1200 Blockingfilter.


Or does someone of you have another Idea or a Tip for me ?


Sunny Greetings :movie
Achim
Bino fertig-05.jpg
Bino fertig-05.jpg (292.49 KiB) Viewed 1190 times


User avatar
marktownley
Librarian
Librarian
Posts: 31044
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 4476 times
Been thanked: 1978 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by marktownley »

Looks good. Why won't it work with 2 eyes?


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4922
Joined: Thu Sep 05, 2019 12:19 am
Location: Edneyville North Carolina U.S.A.
Has thanked: 3008 times
Been thanked: 2543 times

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by DeepSolar64 »

It looks really nice, Achim. I hope you can get it to work well. This should beat any binoviewer.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
ZWO ASI178MM monochrome camera
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
Rusted
Almost There...
Almost There...
Posts: 627
Joined: Fri Jan 19, 2018 11:00 am
Has thanked: 1647 times
Been thanked: 414 times
Contact:

Re: H-Alpha Double-Refractor 120 / 135 / 150mm Aperture ?

Post by Rusted »

A fascinating project! Good luck in finishing it to your complete satisfaction. :bow

I always use the B1200 for surface detail and the original PST BF5 for proms.
The difference is quite dramatic if I use the "wrong" BF for the wrong job.

The B1200 passes much less light than the PST BF.
Which demands lots of gain when minimum gain is desirable to avoid noise around proms.

On surface detail the contrast with the B1200 is far better than the PT BF.
There is quite a difference in power between my examples.
Which requires considerable refocusing.


http://fullerscopes.blogspot.dk/

Baader 160mm D-ERF, iStar 150/10 H-alpha, Baader 35nm H-a, Beloptik KG3, PST etalon, Lunt B1200S2, Assorted TS GPCs, ZWO ASI174.
Post Reply