something else different..

Stuff that happens outside...

Postby Chomp » Wed Mar 26, 2008 8:36 pm

Thanks guys, you make me blush :roll: hehe

I know what you mean bman about the wobbly scopes, thats where I started - some time ago but the memory is etched :)

Thanks splatman, there are a few other projects I have done I am happy with but never took any piccies and the bits have moved on.. I plan to put any interesting stuff on my website, its only fair as I get so much from looking at other peoples work/ideas etc..

The arcade machine gets a lot of use, friends and their kids mostly! This is the second I built, my wife hated the first one because I didnt put much effort in to its appearance. This one looks much better but its not furniture and its in our dining room :lol:

Havent been in the workshop since my 10 week old boy was born. I still have a piece of work I was setting up on the mill looking exactly as it did before my wife went in to hospital. Want to get back there!

The next thing I might do is a new cockpit so I will put piccies up and post a thread later for all you il2 junkies..
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Postby Chomp » Wed Mar 26, 2008 8:41 pm

here we go, 10 weeks and counting. I will turn it in to something one day! but not with a drillbit, that just happened to be there..

Image
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Postby Chomp » Sat Oct 10, 2009 11:01 am

As you may have noticed, I have been out from simming for a number of weeks, thats how it seems to go for me as time allows..

I have done something though, I finished machining all the parts for my new telescope, so while this isn't a picture of the sky it's a picture of my new scope that will take pictures of the sky, heh..

It goes off for powder coating on monday yay.. There were a fair few hours gone in to the making of it..

Image
Image
Image
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Postby Agent X20 » Sat Oct 10, 2009 11:13 am

I'm gobsmacked! You built all that??!! :o :!:
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Postby Chomp » Sat Oct 10, 2009 11:28 am

Just the telescope. I was going to build the red mount that it is sitting on but there are some parts that need some specialised gear.

By the time you add up what you need to buy then the time/cost savings don't add up the same as they do for the telescope.. So I biught the mount the scope is on.

I probably won't have my CNC gear until early next year so it was all done my hand on the mill and lathe..
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Postby archbarch » Sat Oct 10, 2009 11:46 am

Jeez Chomp, this is the first time I've seen this thread, which was started before I joined Kiwisim. Seriously awesome!

I've had a look through your very well put together website too, is there anything you can't do? Do you wear a cape and perform CNC routing using lasers from your eyes?
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Postby R33GZ » Sat Oct 10, 2009 12:16 pm

man, If we ever go to war, Im coming to your house... I just know you've got blueprints for a cruise missile in there somewhere :lol:
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Postby Sloop » Sat Oct 10, 2009 1:44 pm

Seriously, Chomp, that telescope is a beautiful work of art _b
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Postby Chomp » Sat Oct 10, 2009 3:36 pm

Thanks for the kind words guys, it has been an interesting project and it saved me a _lot_ of money..

It would have been nice to buy it from a company called RCOS but this model is $21,400 USD . Thats about $36,000 NZD yep Thirty six thousand dollars NZ :shock:

I got the optics from the same supplier that sells to that company and built of for $5500 NZD, most of the cost was the optics..

It should be an awesome scope though, I like how it looks in the observatory.. Much bigger then the 4" refractor that was on it before.
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Postby Chomp » Sat Oct 10, 2009 3:41 pm

Arch, there's not a lot I haven't thought about building at some point!

Unfortuanelty while you save lots of $$$ doing things yourself you aren't immune to having to put in $$$ to get it done either and that's what usually stops me.

I need to start selling some of my things to fund others. Maybe make two at a time and sell one of them to pay for the other..

I would still like to get on and build the motion platform, the sticky thing at the moment is the linear actuators. They cost a fortune,I will probably have to build my own but the servos an controllers for those can cost a little bit as well..
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Postby PrimaryMan » Sat Oct 10, 2009 6:49 pm

Man that's one beautiful Scope, it's like no scope I've seen before though.
How does it work Chomp?. You say it's a reflector but I can't even see any mirrors!!
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Postby Chomp » Sat Oct 10, 2009 7:03 pm

Thanks Primary! The scope is a reflector and you are keen eyed to notice no mirrors!


This was just a quick trial run on the mount to take a picture :) Once it's been powder coated next week the optics will get installed.

It is a specialised type of cassegrain reflector, the optics are a lot harder to manufacture. The lights comes through the top and hits the 'primary' mirror at the back, it then is directed to the secondary mirror at the front which focuses it through a hole in the back of the primary where the camera is.

Here is a picture of the commercial $36000 dollar version.. As you can see, the design is very similar because this type of design doesnt have to cater for compound angles in the trusses so the making of it is simpler..



Image
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Postby Agent X20 » Mon Oct 12, 2009 8:09 pm

Here's how folks like Chomp make those amazing pictures (about which I'm super envious):

http://www.wired.com/wiredscience/2009/ ... ace-photo/
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Postby baddog » Mon Oct 12, 2009 8:58 pm

Thats quite something mate, you have some serious talent in building stuff thats for sure, wish I had 1/100th of your skills I can barely program a HOTAS... :(
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Postby Chomp » Tue Oct 13, 2009 2:10 pm

Heh, thatnks baddog.

Yep Agent, thats more or less the process we use. Some people use a colour camera so they dont have to take red, green and blue. I have a mono camera because it has so much more resolution then a colour camera.

People don't realise that a colour camera is really a B/W camera with a colour mask in front of it. Some pixels are dedicated to R or G or B. If a pixel is dedicated, it can't actually see any other colour so an algorrithm is used to determine what colour it is likely to be but that's not 100% accurate.

A B/W that uses filters uses all it's pixels for all the colour but you need three exposures - it's worth it though..

BTW, dropped the scope off to the powder coaters yesterday and got it today. Looks good!.
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