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imaging without motor drive?
- davema
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16 years 11 months ago #59985
by davema
imaging without motor drive? was created by davema
Heyho,
Is it possible to image using a webcam on a telescope without a motor drive?
What I mean is, if I keep the object centered as best I can manually, can registax take the fact that the object is not always in the exact same place into account when stacking frames? Or will it discard them?
I figure this would be unfeasable for objects at high magnification, but what about things like planets, that take a while to drift across the viewport at low magnifications?
I have a logitech quickcam webcam at work which I don't mind hacking up to try this, but I won't bother if it just won't work...
Dave
Is it possible to image using a webcam on a telescope without a motor drive?
What I mean is, if I keep the object centered as best I can manually, can registax take the fact that the object is not always in the exact same place into account when stacking frames? Or will it discard them?
I figure this would be unfeasable for objects at high magnification, but what about things like planets, that take a while to drift across the viewport at low magnifications?
I have a logitech quickcam webcam at work which I don't mind hacking up to try this, but I won't bother if it just won't work...
Dave
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- paulevans
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16 years 11 months ago #59988
by paulevans
Replied by paulevans on topic Re: imaging without motor drive?
Yes Dave, it works, I've done it many times with planets - figure out the direction of drift, start on one side and let the planet drift across - Registax will follow it pretty easily.
It does limit your capture to 30secs or thereabouts so your images won't be fantastic but it's great learning!
It does limit your capture to 30secs or thereabouts so your images won't be fantastic but it's great learning!
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- dave_lillis
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16 years 11 months ago #59995
by dave_lillis
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
Replied by dave_lillis on topic Re: imaging without motor drive?
Hi Dave,
Go for it, its very do-able, it just requires a little more work.
Go for it, its very do-able, it just requires a little more work.
Dave L. on facebook , See my images in flickr
Chairman. Shannonside Astronomy Club (Limerick)
Carrying around my 20" obsession is going to kill me,
but what a way to go.
+ 12"LX200, MK67, Meade2045, 4"refractor
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- davema
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16 years 11 months ago #60000
by davema
Replied by davema on topic Re: imaging without motor drive?
ok, thats good news - i think i'll give this a go.
How about this idea for taking longer exposures - I start recording, let the object drift, recenter, let it drift, recenter, etc... etc... eventually stop recording. I realise a lot of frames will feature shake/motion blur, but would it be able to pull out more good frames in this fashion?
I'm sure this would all make sense if I just try it out anyway
Dave
How about this idea for taking longer exposures - I start recording, let the object drift, recenter, let it drift, recenter, etc... etc... eventually stop recording. I realise a lot of frames will feature shake/motion blur, but would it be able to pull out more good frames in this fashion?
I'm sure this would all make sense if I just try it out anyway
Dave
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- Seanie_Morris
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16 years 11 months ago #60103
by Seanie_Morris
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
Replied by Seanie_Morris on topic Re: imaging without motor drive?
You will need short exposures when using (what I call) drift-capture photography. A small scope like e.g. the Skylux will allow you to take longer short exposures while the objects drifts by than a larger aperture instrument. But you are on the right track (geddit?) with your theory of align + stop -> capture + drift -> align +stop -> capture + drift, and so on. Remember, you want pictures, not streaks!
Seanie.
Seanie.
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
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- davema
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16 years 11 months ago #60108
by davema
Replied by davema on topic Re: imaging without motor drive?
Ok, so I have my webcam (one of the logitech quickcams, that looks like a golf ball) - do i need to modify it before hooking it up to my scope?
I saw one site where they removed all the optical components to leave a bare CCD, and then glued half a fuji film canister onto it to make it fit into the eyepiece hole....
Anyone got a link to a site that explains what i should be aiming to do?
I saw one site where they removed all the optical components to leave a bare CCD, and then glued half a fuji film canister onto it to make it fit into the eyepiece hole....
Anyone got a link to a site that explains what i should be aiming to do?
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