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getting in video astronomy

Fri Jun 8, 2007, 6:07 PM
journal-enhancement_1

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Recent journal entry:

Okay, long time no Journal xD ...some things have changed:

1. I take meds against depression and fear and it's working kinda great ^^ therefore:

2. I'm living in my flat now for about 3 weeks and I'm feeling very well here.

3. I have a balkony, so now I'm able to set up my scope permanently, that's a great help.

4. I don't have a DSLR anymore, the one I used belongs to my father and since I've moved... :/ ...so no higher quality astroshots until I can afford a DSLR...and no other shots too, I guess. (Well, I'm usig a cheap film-SLR right now but I've only got a 50 mm lens for it .)

5. BUT I modified a webcam so that I can capture planetary images using the default videoastronomy techniques. My equipment and workflow isn't optimized yet, but it looks like I've got some results. ...well...they aren't comparable to what you other guys can do (especially :iconchrissyo: ;) ) but...hmm...whatever :XD: .Well, I'm using a simple Newtonian to capture planets, maybe that's not toooo optimal :P . I'll give the small refractor try too...

6. Soon I will continue with my telescope making stuff...I think I will work in the kitchen...have you ever seen a fusion of kitchen and work-room? "Hey, where's the mixer?!" "Ah, erm...just take the huge dilling machine over there..." :XD:


So...here are my very first planetary images using a webcam:


error

Saturn, yesterday, prior to deconvolution, baaaad seeing (average of best 1% out of 2700 images @ 1/20 second exp.), exposure is too long and planetary disc ist too small...I've overworked the settings/equipment for Jupiter below.



error

Saturn after deconvolution...still bad... :/



error

Jupiter, tonight, like Saturn it's not far from the horizon, unfortunately :( . When it comes out of the stacking program it looks like this (average of best 1% out of 500 images @ 1/60 second exp.)



error

...after some basic histogram corrections...



error

...after deconvolution...I'm pleased with the deconvolution result since the base image is an average of just 5 webcam frames at highest sensitivity...next time I'll be quicker to capture much more frames :excited: .






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My photography in mathematical terms:





macro³





weather² + macro





astro³





My top favorites from friends and other artists!
(if you like what you are seeing, you should check out their galleries)





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Featuring own animation projects:


This is an animation I made for the trailer of a movie, it's reduced in size (0.5x) and the compession is very strong (XviD quality 89) so the image quality is terrible...you need a DivX codec to run it but I'm sure you already have this ;P ). Left or right click on the image to do whith the animation whatever your browser supports:


moutnains and lakes


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12 inch project:
This is a 3D-model of the desing I use for the tube, I will enhance this model while making progress whith the project:


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I bought the missing 2 aluminum pipes, now they are all complete and I just have to find time and the will to work on them.

Material listing:
8x 25 mm x 25 mm x 2000 mm aluminium pipes.................................about 164 $
screws with nuts (100x), M5x40 mm..............................................................11 $
shims (250x).................................................................................................7 $



8 inch project:


8 inch mirror and tool


The 8 " mirror ist spherical now. Phase 1 of 3 ist finished, I'm now up to smooth it out until it's smooth enough for polishing and parabolisation.

I've detached parts of telescope, washed and cleand the pieces several times with a solvent. I cleaned the metal from fat, dirt and the solvent using ammonia solution and a ton of tissues, I didn't touch the metal except with gloves, sprayed the grounding on the telescope parts, sprayed the black colour on the grounded telescope parts...and then?!? It partially peeled off while/after drying!! Here are some of the parts, 3 are missing because colour and grounding peeled off together (the bright spots on the black parts are highlights - the colour was still wet during the shot):


8 inch tube, screwed up


Here are some other parts, in this case it didn't pelt off but after I sprayed the second layer of black colour on it, it became wrinkly. :cries:
That indicates that it would have pelt off after a while anyway... :cries:


8 inch tube, screwed up


Why is it impossible to get colour on aluminium?!? Do I make the layers too thick??

  • Mood: Content
  • Listening to: Yoko Kanno
  • Watching: Elfenlied, Naruto, Death Note, Boston Legal
  • Playing: Oblivion
  • Eating: much :)
  • Drinking: much :)

Devious Comments

love 0 0 joy 0 0 wow 0 0 mad 0 0 sad 0 0 fear 0 0 neutral 0 0
:iconcurtition:
Congratulations, sven!
:D

sometimes there is just one chemical missing from our brains, and it influences all our personallity!

Living alone! That's a great step for you! :D :D :D

Hey, even though you have little to work on, you still get amazing results from it!

I hope you get better hardware soon.

Big :hug:

--
"In darkness there is death.
It was the first thing they had taught him and he never forgot it. He could move unobserved in daylight, too; in other ways. But the night was his special friend."

:diny: :ninja: :heart:

Check out my favourites! ;)
:iconrhavethstine:
Wow, for a webcam, that's pretty damn impressive! :)
:iconhector42:
Thank you ^^

Yes, I see it the same way...it's just about chemics...but it's difficult to follow logical conclusions when you don't feel like it. However, the situation wasn't standable and I asked some people about what these meds do with your personality and it's much more harmless than I thought. I'm not a different person now. Also I realized that a depressive/fearful person simply lacks serotonine and noradrenaline (due to some unlucky feedback-loop of frustration and expectation) and therefore it's more unnatural to be depressive than taking meds which get these substances sorted.
After a long time, my "system" will be reconfigured to hold enough serotonine and noradrenalin on its own. It's a matter of forgetting and conditioning.
But it sounds like you already knew all of fthis...?

It's a great step for a man, but small step for mankind :rofl:
Well, without all these strange fears it's very easy because I already boiled my own soup when I was living with my parents. So...I already knew how to operate a washing machine... ;P

Thank ya ^^ I'll see if I can improove the webcam stuff...I'm sure that I can get it better, that's the reason why these images are in my journal and not uploaded as Deviations. My focuser is none of the good ones and focusing via a motor drive would be a great help...I'm going to try to attach a servo or something...so many expensive things to buy :cries: . When I will have survived the upcoming denstist session cluster, my brain will be free to look after a job seriously.

Hope so too :P

re-:hug:

--
*nnff*
:iconhector42:
Thank you ^^
Hmm, what do you mean with "for a webcam"? Webcams or webcam-like Astrocams are optimal to capture the planets because they can make many images in a short period of time. You can tell the computer to take just the very few ones for stacking, on which the air turbolence is minimal. This technique is very efficient and obvioulsy the deconvolution technique works much better on this than on my chemical images. That makes me kinda feel good :boogie: . I hadn't thougt that a stack of just 5 images can be deconvolved like this without producing much noise.

--
*nnff*
:iconcurtition:
I'm happy for you.

And good luck on finding work! :D

--
"In darkness there is death.
It was the first thing they had taught him and he never forgot it. He could move unobserved in daylight, too; in other ways. But the night was his special friend."

:diny: :ninja: :heart:

Check out my favourites! ;)
:iconrhavethstine:
I say that because webcams are typically made of very cheap materials and aren't exactly known for their quality. ;) Thus, I am impressed by the images you were able to achieve with such a small resolution. :) It's pretty cool, whatever that case.
:iconhector42:
Hmm, yes, that's right...but quantity, in this case, makes up for the low quality. The resolution for astronomical imaging - especially for planetry imaging - isn't of such great importance. The most important thing here is to minimize the exposure time because otherwise the air turbolece blurrs the image. Using a webcam for 70 $ enables the todays amateur to take shots that are better than the best shots from the great observatories 10 or 20 years ago.

Thanks again for your appreciative words :hug:

(I'm right now processing the 3 try, Jupiter once again...I adjusted the main mirror and got rid of a slight astigmatism...with a tremendous effect on the sharpness...man, Newtonians are really sensitive to not perfectly adjusted optics... O_O ...the pre-deconvolution image looks very fine so far...much better than the jupiter in mz journal above :excited: )

--
*nnff*
:iconrhavethstine:
Cool, that's good to hear. I look forward to seeing what else you come up with.

On a somewhat related note, have you checked out Astronomy Picture of the Day Archive? I'd think you'd be interested in most of the images there. I know I am. :D
:iconhector42:
Wow...the whole archive O_O !
Many years ago - when I didn't even had a modem to link to the web - one of my teachers used to print these images and hung them on his office door. I was always looking if he changed the pic but he updated it just very rarely :( .

--
*nnff*

Schould I remove my name and dA adress from my prints? 

33%
2 deviants said No.
33%
2 deviants said Dunno.
17%
1 deviant said Yes!
17%
1 deviant said Doesn't matter.

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~quicksimon:iconquicksimon:
Rock n Roll Sven :headbang:
Mon Oct 9, 2006, 8:09 AM

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