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My just completed Jaegers 6-inch f/10

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#1 PaulEK

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Posted 18 November 2012 - 10:39 PM

I bought the lens in August, when they were on sale at the Surplus shed, and I got an email offering me an additional 30% off anything in the store. I had also just sold something on eBay for more than I thought I would possibly get. I couldn't pass it up.

I immediately ordered a cell and focuser from Crawford Machine (Crowmach). I had read very good things about Dan from posts here on CN. I don't know of anyone else doing custom work like he does. It took longer than either of us thought it would, but it was more than worth the wait. The cost was more than reasonable, and they are built very solidly.

I got the tube and dew shield from Hastings Pipe, another place that was a pleasure to deal with. Very friendly and helpful.

I had the tube, shield, and a couple of parts powder-coated by a local company here in southwestern Wisconsin.

I'll post photos in the order I took them, as the process went on.

#2 PaulEK

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Posted 18 November 2012 - 10:43 PM

Here's the jig I made for my router to make circles. I used it to cut circles for the cradle, rings for the baffles and for the front of the dew shield. In this photo, you can see a very thin ring that I made to adapt the 8-inch dew shield to the 7.5-inch cell. I decided it was too thin, and just used felt strip.

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#3 PaulEK

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Posted 18 November 2012 - 10:46 PM

Here's the handle for the cradle, and an attachment for mounting a guide scope. I made them out of stock aluminum that I had in the garage. I get some kind of satisfaction when I can use what I already have. I made them using a band saw and a belt sander.

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#4 PaulEK

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Posted 18 November 2012 - 10:49 PM

Before ordering the tube, I made a 'telescope on a stick'. I put the lens in it to measure just how long the tube needed to be for me to use it with my eyepieces, diagonals, and cameras. Here's one view.

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#5 PaulEK

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Posted 18 November 2012 - 10:49 PM

Here's another.

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#6 rguasto

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Posted 18 November 2012 - 10:50 PM

. I made them using a band saw and a belt sander.


Really? Very nice!

#7 PaulEK

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Posted 18 November 2012 - 10:51 PM

Here's the tube and dew shield cleaned up and ready for powder-coating.

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#8 PaulEK

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Posted 18 November 2012 - 10:52 PM

Here are some of the other parts ready to go. You can see Halloween was approaching.

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#9 PaulEK

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Posted 18 November 2012 - 10:55 PM

Here are all the parts laid out after the powder-coating was completed. I covered the tube and shield in paper, then sprayed them inside with flat black paint. This was taken yesterday.

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#10 PaulEK

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Posted 18 November 2012 - 10:56 PM

Here's the cleaned up lens in its cell. This was taken today.

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#11 PaulEK

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Posted 18 November 2012 - 10:57 PM

And here's the scope on my Atlas, which is just equal to the strain.

#12 PaulEK

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Posted 18 November 2012 - 10:57 PM

Oops! Forgot the photo.

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#13 PaulEK

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Posted 18 November 2012 - 11:04 PM

Here's another photo.

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#14 PaulEK

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Posted 18 November 2012 - 11:05 PM

Here's one more.

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#15 PaulEK

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Posted 18 November 2012 - 11:06 PM

A close-up of the cradle.

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#16 PaulEK

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Posted 18 November 2012 - 11:06 PM

The focuser.

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#17 PaulEK

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Posted 18 November 2012 - 11:09 PM

The cap. I made this with the router jig, too, and designed the front end so I could mount the solar filters (visual and photo, with AstroSolar film) that I had made for my 5-inch, f/6.4 refractor.

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#18 PaulEK

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Posted 18 November 2012 - 11:09 PM

Here's the filter adapter.

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#19 PaulEK

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Posted 18 November 2012 - 11:12 PM

And the mounted filter.

I'd be grateful for any comments, and welcome questions. And thanks for the comment way up there from rguasto!

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#20 PaulEK

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Posted 18 November 2012 - 11:16 PM

Of course, now I have to wait for clear skies to actually test the completed scope out. I mounted the telescope on a stick to just test basic functionality, but without a tube there was little contrast. Still, the views were quite sharp when I aimed the scope at a TV tower about half a mile away. But then I lost the instruction sheet for which way the front element should be place, and got some help earlier today here on CN.

#21 herrointment

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Posted 18 November 2012 - 11:44 PM

She's a real beaut!

#22 glennnnnnn

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Posted 19 November 2012 - 08:42 AM

Going the traditional route: This kind of telescope will always be a classic!
You are also a craftsman and the work looks excellent!

#23 Gord

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Posted 19 November 2012 - 09:45 AM

Wow, what a beauty! And in Tasco Red no less!

Do you have a paint code for that?

How did you find the hastings tube for prep? Were there many defects (dents, etc.) that had to be taken out?

Again, really nice! I like the 6" F10 size. They are still manageable (although not small) and have the nice classic long refractor look. If you don't have one already, I recommend a long FL Plossl (Meade 56mm, TV 55mm, etc.). They work really well, give huge fields, well corrected and not to large an exit pupil.

Clear skies,

#24 Mirzam

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Posted 19 November 2012 - 10:54 AM

Beautiful paint job and overall nice job! I also like the handle/finder mounts made out of aluminum square tubing. Great idea!

I have a Jaegers cemented 4" f/10 lens in a homemade tube and it is an excellent performer. False color is not objectionable, and the reasonably short tube is very easy to deal with.

JimC

#25 PaulEK

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Posted 19 November 2012 - 11:14 AM

Thanks, guys!

The color is actually orange (for some reason, it's called 'sparkle bomber orange'). I don't know if it's because it is powder-coating rather than traditional paint, but it has a lot of depth, and a certain amount of prismatic effect. I took the photos not long before sunset, so that may have made it look more red. If you look at the focuser photo, it shows the true color better.

As for the square aluminum tube, I was very pleased myself with how easy it was to shape, and the overall look when I was done with it. I wanted a metal handle between the wooden cradle rings, but didn't want to pay what they cost at Home Depot. Once I decided to use what I had, the design sort of followed from the shape of the tube, and my wanting to cut away the holes I had drilled in the square tube for some old project.






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