My just completed Jaegers 6-inch f/10
Posted 19 November 2012 - 11:20 AM
Posted 19 November 2012 - 12:53 PM
Beautiful paint job and overall nice job! I also like the handle/finder mounts made out of aluminum square tubing. Great idea!
I was going to say exactly the same thing. I really like how that turned out! What an elegant way to turn a rather spartan, even ugly square tube into something attractive while still being very functional! Gives me some ideas... ...like how about putting hardwood inserts inside the tube, fer instance!
Love the red tube, too!
Posted 19 November 2012 - 01:02 PM
Is the 127mm lense? What size tubing did you buy for the dew sheild?
Posted 19 November 2012 - 01:30 PM
The tubing for the shield is 8-inch; the main tube is 7-inch, for the 6-inch lens. Dan Crawford originally thought he'd be able to make the cell take a 7-inch dew shield, but later wrote to say that 7.5-inches was the smallest he could get it. In the meantime, I had ordered and started finishing a 7-inch shield. I've attached a photo. If someone wants it, I'd be glad to pack it up and send it for the shipping cost. It's a 7-inch outer diameter pipe, with a .060 inch thick wall; nine inches long. Unpainted inside and out, but sanded with 320 grit. The cap was also made to use the solar filters I made for my 5-inch scopes. The photo doesn't show it, but the cap is made from a thin ring of birch plywood, with a thinner piece glued on the front.
Posted 19 November 2012 - 01:58 PM
I like the idea of hardwood inserts, and will give that some thought. However, the opening in the handle actually seems to work as a rough finder; sort of a very poor man's Telrad. I plan to buy a G-11 to put this on, and I tend to push to objects. I want to see if I'm right about rough alignment with the handle (skies are supposed to clear tomorrow).
This reminds me of another idea I had for a zero-power finder. And it might work in this case, too. I make a lot of my tubes out of plywood, so they're polygonal. Even with just a semi-gloss polyurethane on them, I can sight along the tube and line up on a bright star or planet by getting its reflection to converge with the sky view. So, you could probably do the same with your square tubing, even if you were to put inserts on the inside, by sighting along the outside faces.
Posted 19 November 2012 - 02:01 PM
- Bomber Bob likes this
Posted 19 November 2012 - 05:20 PM
Posted 19 November 2012 - 06:38 PM
Posted 19 November 2012 - 09:25 PM
And, Ron, I just sent you a PM.
Posted 19 November 2012 - 09:31 PM
Posted 20 November 2012 - 12:22 PM
Posted 21 November 2012 - 02:14 AM
Posted 21 November 2012 - 01:40 PM
I went out today and bought the materials for a case to hold it, and will hope that the clear skies that have been forecast for three days will actually happen soon.
Posted 21 November 2012 - 04:52 PM
Posted 21 November 2012 - 08:01 PM
Posted 01 December 2012 - 05:53 PM
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Posted 01 December 2012 - 06:02 PM
I also bought a new diagonal for it. I only had a cheap one from the Surplus Shed. When I tested it using the cheap diagonal, views became mushy by 200x. I only had a short time of clear skies, so could not raise the tripod and use it straight through. I'm hoping the new diagonal will allow me to go higher. I guess it could have been the seeing. It also might need collimation.
Another question is whether the tape spacers that came with it from the Shed are the right thickness. Can anyone point me to information on just how thick the spacing should be? I don't want to mess with it if I don't need to.
Of course, I could also have bought a lens that is just not that great. I hope not, and will assume not, for now.
- mitsos68 likes this
Posted 09 June 2015 - 01:24 PM
I referred to this old thread in another post earlier today, and went through it again. I see that I never came back to update my last comment about the views through it. I had a friend help me collimate it (both the focuser and the lens) and it really helped. I was very happy with what I saw of the moon and Jupiter, but still wondered if it could get a tiny bit better. It needs further testing, and possibly some adjustment of the elements, but seeing is usually so bad here that I haven't gotten around to it.
It's not my most used scope because it is pretty unwieldy. It's also so nice that I don't want to damage it. I often do my viewing while doing public outreach, and this scope usually stays home. I'm working with my school district to build a school/public observatory, which should be finished this summer. This is one of the scopes I'm donating to it, so it will soon be getting plenty of use!
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