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Equipment Discussions >> ATM, Optics and DIY Forum

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BarabinoSr
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: Chuck Hards]
      #5721284 - 03/08/13 09:53 PM

Mel, I'm glad to see that you're back in the game!! I can't wait to get back to Riverview for some good observing this year. I'm hoping that your 6" f/10 is as good optically as advertised. Good Luck
. Looking forward to more posts on your work my brother. That 6" f/10 Jaegers will be an AWESOME instrument. Clear Skies, GB/VSC-1

Edited by BarabinoSr (03/08/13 09:56 PM)


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5722903 - 03/09/13 07:56 PM

Great recommendation, bremms! I have done the same with other components I have painted during the fall and winter seasons. Since the tube is now much easier to to handle, I will consider letting the tubes do a little sun bathing to get it outgassed much sooner. Getting that rock hard finish is a must.


Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: Chuck Hards]
      #5722908 - 03/09/13 07:58 PM

Hey that may be an option for my next project, Chuck! Waiting for paint to dry can make the best us loose valuable patience.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: BarabinoSr]
      #5722954 - 03/09/13 08:32 PM

Quote:

Mel, I'm glad to see that you're back in the game!! I can't wait to get back to Riverview for some good observing this year. I'm hoping that your 6" f/10 is as good optically as advertised. Good Luck
. Looking forward to more posts on your work my brother. That 6" f/10 Jaegers will be an AWESOME instrument. Clear Skies, GB/VSC-1




Thanks Bam! Getting to this point was difficult with all of the other matters I have been dealing with. But, I am getting it all done, and I consider it a blessing.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) [Re: dawsonian2000]
      #5735123 - 03/15/13 10:19 PM

UPDATE: I checked the tubes today and their outgassing is nearly complete. I will give them another week or two. Then, I hope to get assembly on the road.

Mel


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martym
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5740219 - 03/18/13 08:25 AM

Mel, it may prove more difficult assembling the GJD while traveling down the highway then doing a stationary build in a garage. LOL

marty


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: martym]
      #5741598 - 03/18/13 08:06 PM

True, true...

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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5751134 - 03/23/13 02:23 AM Attachment (30 downloads)

I accomplished another baby step in the build of the GJD refractor. With the out-gassing of the main tube and dew shield nearly complete, I performed a test fit of the two tubes along with the hammer-finished painted transition piece to see how the components would fit together. I was impressed with the fit and trim of partial assembly! Here is a shot of the assembly from a short distance. It will be disassembled for further out-gassing of the tubes.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5751136 - 03/23/13 02:24 AM Attachment (29 downloads)

...here is a closer view. Considering the tubes were painted by means of a spray can, the finish turned out great!

Mel


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neo
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5751512 - 03/23/13 10:37 AM

Superb looking refractor , very nice finish!
Why so much out-gassing though? Do you think it could damage the lens?


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: neo]
      #5752721 - 03/23/13 09:06 PM

Quote:

Superb looking refractor , very nice finish!
Why so much out-gassing though? Do you think it could damage the lens?




Hi neo!

No, I do not think it would damage the objective at all. The reason I am allowing so much time to allow the tube to out-gas is because it develops a rock hard finish. Over the years, I have noticed that even though my painted projects are dry to the touch, the durability of the paint has the consistency of hard rubber in density. Therefore, being a very patient individual allows me to let the tube fully out-gas until I can hardly smell any fumes emanating from its surface. I hope this clarifies my reasons for thorough out-gassing.

Mel


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bremms
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5753097 - 03/24/13 01:16 AM

Yes, Spray paint takes weeks without baking to harden. Paint is soft, adhesion is poor. two part paints are great but you need a gun to put them on.

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neo
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5753296 - 03/24/13 05:44 AM

Aha now it makes sence . Thanks Mel for clarification. Didn't know that spray paint takes so much to cure .

Once again gorgeous looking scope!


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: neo]
      #5754308 - 03/24/13 03:35 PM

You are quite welcome, neo! I guess it all depends on how you are going to use the painted item. If an item is handled little, I can see you putting it to work within a week after painting. But, since a refractor's tube is handled quite a bit during a normal observing session, I presume letting the tube out-gas as long as a month or more; depending on temperature and humidity conditions.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: bremms]
      #5759173 - 03/26/13 09:00 PM

Quote:

Yes, Spray paint takes weeks without baking to harden. Paint is soft, adhesion is poor. two part paints are great but you need a gun to put them on.




Hey bremms!

I wish I had the right setup to do a great two-part paint job. Epoxy base paints are fast curing and ultra hard.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5783288 - 04/07/13 08:27 AM Attachment (24 downloads)

With the main tube's out-gassing complete, I purchased and test fitted all of the hardware on the lens cell and focuser components, which both will possess collimation capability. Most of the hardware is metric-M6, with the exception of the Phillips-head screws attaching the focuser to its collimation ring being metric-M5's. All are stainless steel.

My next step will be to make a pair of handles for maneuvering the scope.

Mel


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dawsonian2000
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5791159 - 04/10/13 07:57 PM Attachment (22 downloads)

Using some scrap pieces of 3/4" solid red oak, I fabricated a couple of supports for the stainless steel bar handles that will be attached opposite one another at the focuser end of the main tube for maneuvering the scope. For better stability of the bar handles, I drilled recessed holes in the oak supports for them to sit in. Once I have sanded the oak supports and seal them with marine-grade spar varnish, the assemblies will be mounted to the main tube from the inside.

Mel


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martym
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: dawsonian2000]
      #5791863 - 04/11/13 07:50 AM

Yes, I like the idea of grab handles on a refractor. I also put one on my 6" f/15 folded refractor and my 5" f/8 refract.

marty


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neo
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: martym]
      #5791972 - 04/11/13 09:19 AM

Looking good Mel!

I almost forgot about a handle on my baby Jaegers . I have to do something about it while I still can


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mikey cee
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Re: Jaegers GJD 6" f/10 Refractor Build (VSC) new [Re: neo]
      #5792096 - 04/11/13 10:50 AM

Yeah Mel you gotta' have grab handles on a refractor. It's the law of the land! Mike

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