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Chriske

Building/printing Hubble telescope scale 1:7 (finished!)

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SaturnV (x4) scale 1:55 are done.

This time our director asked me to build a scale model of Hubble space telescope to be hung just above the entrance of our planetarium.
I actually will build two versions. One is 1:7 and the second will be 1:10 scale
Busy making the two tubes of the largest one. One is 600mm diameter and the other is only 420mm diameter.
Total length of that 1:7 scale model (open-door included) will be about 2.3meter.
In both cases only a few parts of the models will be printed.

Is there a specialist Hubble space telescope out there...??? I have a few questions about Hubble.
This is were I have most of the info from.

Zoomed in on the back of Hubble I see a few(4) vent-holes. Why are there vent holes at the back..in space..?


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A few more questions yet to come, thanks..!

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WOW!!  YOU sure go in for BIG projects Chris!  :thumbsup:

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All four tubes for this project will be made of hardboard 3.6mm thick.

During course, along time ago  before we started using trusses, we made our telescope tubes out of cardboard too.
In the beginning we used PVC tubes which were very heavy. In fact to heavy when we started building larger scopes. So we made our tubes out of cardboard instead.
Before we wrapped the cardboard sheets around a PVC tube we sprayed them soaking wet. Then we started bending the wet cardboard very slowly around a PVC tube and fastened the cardboard with buckles. These cardboard tubes are very light, strong and cost a fraction of the same size PVC tubes.

At he outside these cardboard tubes are very smooth and at the inside you have that nice rippled surface. Ideal in combination with black paint to flock the inside.

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In the past many things were made out of papier-mâché - wet paper and flour paste, and were very strong.  So I can see a similar composition being strong and light for telescope tubes.

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Oops...!

Need to correct something here.
Higher up I said we made telescope tubes out of cardboard back then. That's pure nonsense of course..:laugh2:
That should have been hardboard of course and not cardboard... silly me..!

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I gather papier-mâché can be as strong as wood.

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9 hours ago, Chriske said:


Is there a specialist Hubble space telescope out there...??? I have a few questions about Hubble.
This is were I have most of the info from.

Zoomed in on the back of Hubble I see a few(4) vent-holes. Why are there vent holes at the back..in space..?

A few more questions yet to come, thanks..!

Chris would one on those Haynes Manuals be useful, I believe there is one on the Hubble.

Haynes Manual - Hubble

Jim 

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I did but it's a bit small compared with what I'm planning to build.

Maybe I did miss something..?

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Something I might be interested in though.  I might consider making a smaller version than Chris but I have many projects on the books before I could get to that.

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This is a very good site, many detailed views, but no explanations or measurements, pity.
On that other site there are some measurements. It's probably enough for my project.

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What are these 'Scuff plates' for..?

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There are four of them.
I'm only guessing here : four devices to firmly hold Hubble in the the Shuttles cargo-bay during transport..?

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2 hours ago, Chriske said:

What did you have in mind, how small..?

Haven't really thought.  Maybe something I can print on my Giant 3D printer when I've got that working again.  Even that is sometime in the future after I finish my ASC, ROR automation and a couple of other things.

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Meanwhile another member of our observatory (Michel) joined me drawing HST parts. I'm very happy with him helping me of course.
We already did lots of preliminary drawing.

Edited by Chriske
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This is what we have drawn so far, more to come. Need to decide now what colour to use for these printed parts(pale blue in the drawing).

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One of the 'parts' hanging around HST is this little guy. Not top quality, but that has all to do with the speed I'm printing(100+mm/s)
Need to paint the helmet 'glossy-gold'.
Actually there will be a few of these 'astronauts' holding on to the metal handles.
I wonder, do they always grab the handles to 'float' from one point to another or are they secured by a 'rope'..?

I might add a cordless drill or a hammer to put in their hands(or a hacksaw...😁)

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Amazing print :thumbsup:

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Fantastic project!

On 28/01/2020 at 16:18, Chriske said:

I might add a cordless drill or a hammer to put in their hands(or a hacksaw...😁)

Or perhaps an eyepiece and frustrated look on their face? 😂

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Meanwhile all external HST's parts, that needs to be printed, are drawn. Most of them by Michel, he just started learning 3D drawing btw. He becomes rather good at it.
One of these days, when weather allows it, I'll start building HST's outer perimeters.The hardboard panels needs to be soaking wet to bend over a plastic(or other) tube.


 

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Started building HST's hull out of 4mm hardboard.
First parts is the lower -instruments- part

What I need :

Sun and wind, hardboard, belts, 600mm diameter barrel, water(lots of it)

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Makes a change from PLA but I know you haven't got a printer big enough 🤣

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