Is anyone 3D printing telescope accessories? I got back into printing and I have printed a few useful parts like a solar finder, finder bracket shoe, accessories for my raspberry pi setup, and 2" desiccant dust caps. I already have a bunch of bahtinov masks but I was wondering if anyone has printed anything useful for their telescope equipment.Chris
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Is anyone 3D printing telescope accessories? I got back into printing and I have printed a few useful parts like a solar finder, finder bracket shoe, accessories for my raspberry pi setup, and 2" desiccant dust caps. I already have a bunch of bahtinov masks but I was wondering if anyone has printed anything useful for their telescope equipment.Chris
Is anyone 3D printing telescope accessories? I got back into printing and I have printed a few useful parts like a solar finder, finder bracket shoe, accessories for my raspberry pi setup, and 2" desiccant dust caps. I already have a bunch of bahtinov masks but I was wondering if anyone has printed anything useful for their telescope equipment.Chris
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Is anyone 3D printing telescope accessories? I got back into printing and I have printed a few useful parts like a solar finder, finder bracket shoe, accessories for my raspberry pi setup, and 2" desiccant dust caps. I already have a bunch of bahtinov masks but I was wondering if anyone has printed anything useful for their telescope equipment.Chris
--
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George,
I was getting about one night’s use from a set of batteries in my Telrad, because either I forgot to turn it off, or it accidentally got turned back on. I mod-ed my Telrad to run on 12vdc, which I have readily available on my scope. Chas Rimpo helped me with component selection (two items, less than $10, I think). I figured out how to connect them from the data sheet.
Some soldering required. Once upon a time I could solder like nobody’s business, but picking it up again after decades of not doing it, it was almost like starting over. Skills are so-so now, but I managed to pull it off.
Image attached. I can round up more details if you’re interested.
~Jim
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Garry,
I can see no difference between my Telrad as it is now on 12vdc power and as it was on 3vdc AA battery power, so it seems to be working ok.
I had no idea that there was such a thing as tantalum and electrolytic capacitors but you have piqued my interest. Can you explain why the electrolytic capacitor is better for this application?
~Jim
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Well, the caps Meade uses aren’t reliable. I don’t thing Tantalums are all unreliable as a type.
Meade used under spec’d parts. They should have used 50V caps rather than 25V caps. They may have also used really cheap, poorly made caps.
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I think Jim and I ran ours from a 12VDC supply since that’s pretty much what we had available. However, this method should also work with the 5V available on a USB cable if that what you have. The main hassle with that is the cost of a USB female bulkhead mount jack and cutting a rectangular hole for it.
The main difference in my implementation vs. Jim’s is that I drilled two round holes for female RCA jacks in my Telrad and daisy chained both jacks together. Then I plugged the 12VDC power into one and ran a 2nd RCA male-male cable from the Telrad to my Dew heater.
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Chas is correct, 12vdc is what I had readily available to tap into on the scope. I would add that I put an Anderson PowerPole connector on the end of the pigtail coming out of my Telrad, because I had an extra outlet on the scope to plug it in to.
~Jim
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