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Equipment Discussions >> Electronically Assisted Astronomy

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euphony
member


Reged: 12/02/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5566941 - 12/12/12 02:58 AM

Both of those look promising, especially considering the price this little camera is!

Be interested to see what results are achieved when it's modified!


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yaesu77
member


Reged: 11/04/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: slipfit]
      #5575039 - 12/17/12 12:37 AM

Quote:

Not bad. What were the settings that you were using?




Agc off,sens up 256X,exp. manual,az mount.Filter ir remove.
I am sure that the next acquisition will be better.

Edited by yaesu77 (12/17/12 02:55 PM)


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yaesu77
member


Reged: 11/04/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: yaesu77]
      #5577617 - 12/18/12 05:23 PM

Better not?



Edited by yaesu77 (12/18/12 05:24 PM)


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euphony
member


Reged: 12/02/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: yaesu77]
      #5578320 - 12/19/12 02:37 AM

That is very good! Is that just a single shot of the screen?

Edited by euphony (12/19/12 02:38 AM)


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nytecam
Postmaster


Reged: 08/20/05

Loc: London UK
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: yaesu77]
      #5578460 - 12/19/12 06:31 AM

Quote:

Better not?


Nice M42 result - here's my similar M42 crop via my Canon 1100d in 30s exp

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yaesu77
member


Reged: 11/04/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: euphony]
      #5579921 - 12/20/12 12:42 AM

Quote:

That is very good! Is that just a single shot of the screen?




Thanks guys, for now I am very pleased.
It 'a 28-second video processing with registax and photoshop, it's just a few adjustments

Other processing:



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mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580048 - 12/20/12 04:15 AM Attachment (119 downloads)

HALF second M42

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mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580053 - 12/20/12 04:19 AM Attachment (97 downloads)

1 second M42

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mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580058 - 12/20/12 04:20 AM Attachment (129 downloads)

4 second M42

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mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580063 - 12/20/12 04:38 AM Attachment (64 downloads)

The half second, one second and 4 second M42 images are actual LNTECH screen shots taken with my SLT A33 (the screen was a 7" older LCD ) .
No filters of any kind , just scope , reducer and camera .
More importantly, the images are taken with a modified LNTECH camera .
For now the mod consisted only in disabling the AGC functionality that adjusts the A/D converter gain and replacing it with a circuit that allows manual adjustment of the gain in small increments.
The way this camera model was used by people (unmoddded) is with the AGC off (gain set to 6dB, which is minimum) .
OTher setting for the unmodded cam result in washed out images.
In these images the gain was up to about 36dB with 6dB more to go and no sign of color washing out .
At this stage I wasn't interested in lugging a laptop outside for pretty pics, all I wanted to determine was if the camera has potential and if the major drawback of using it as minimum gain could be circumvented .
That's why I didn't try to increase the signal to noise by doing a wider field . That and the fact that I was in a hurry and couldn't find the correct spacer between camera and reducer .

Next step is adding a temperature regulated Peltier and a few other odds and ends such as a higher resolution output .S-video is on the way after Peltier .After that I will integrate a USB interface for image capturing if the S-video shows enough improvement over composite .This is fun .


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mclewis1
Thread Killer
*****

Reged: 02/25/06

Loc: New Brunswick, Canada
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580289 - 12/20/12 09:30 AM

Very nice.

Those modified 1-4s exposures do indeed show real promise. I look forward to what some noise reduction (cooling) will do.

Will you consider documenting your AGC disabling circuitry (and any other mods)?


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barbarosa
scholastic sledgehammer


Reged: 04/11/10

Loc: "lamorinda", CA
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5580752 - 12/20/12 01:56 PM


I wish you great suceess with the mods. I like this little cam, but the firmware limits are annoying. Your work shows the potential for a high performance to cost ratio. My skills might not be up to doing the mods, but I do hope that you share in detail.


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yaesu77
member


Reged: 11/04/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: barbarosa]
      #5580766 - 12/20/12 02:05 PM

I hope to do further tests in the coming days on an object more difficult.
I am very pleased with the small camera.


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euphony
member


Reged: 12/02/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: yaesu77]
      #5580779 - 12/20/12 02:16 PM

Mine arrived today

Although I am not going to be able to use it for at least a week according to the weather forecast!:(

Looking forward to having a little play with it


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mattflastro
Vendor - Astrovideo Systems


Reged: 07/31/09

Loc: Brevard County , FL
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mclewis1]
      #5581477 - 12/20/12 09:19 PM

Quote:

Very nice.

Those modified 1-4s exposures do indeed show real promise. I look forward to what some noise reduction (cooling) will do.

Will you consider documenting your AGC disabling circuitry (and any other mods)?




The mods are a work in progress right now . A partial list includes cutting some board traces under a microscope , soldering surface mount fine pitch parts , downloading some code into a microcontroller .
However, this breadboard is just a proof of concept .
I will add cooling and depending on how these all perform, a remote control , S-video and USB for computer capture .
I'll keep the forum posted as to the tests and work progress .


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GlennLeDrew
Postmaster
*****

Reged: 06/18/08

Loc: Ottawa, Ontario, Canada
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5583024 - 12/21/12 06:58 PM

Any idea of the cost of additional components, and the number of hours of work required? I wonder how this would compare to purchasing something ready-made like the Mallincam Jr. Or a cooled MC, if cooling is added here.

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euphony
member


Reged: 12/02/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: GlennLeDrew]
      #5583635 - 12/22/12 06:50 AM

I had a quick play last night as there was roughly half an hour gap between clouds. Seeing was terrible as there was a lot of moisture in the air and that seemed to be emphasizing the moons glow across the sky. Anyway, it showed promise, so am looking forward to a moonless night.

The one thing I was struggling with was the colour. Everything had a tinge of red (even the noise! )
So I tried to adjust it and the blue looked too much then, I couldn't get a decent balance.
What have people on here used as the colour settings? Whatever I tried didn't look natural at all.


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James Cunningham
Post Laureate
*****

Reged: 08/07/10

Loc: Maryland
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: euphony]
      #5583662 - 12/22/12 07:54 AM

Try getting the color close during the daytime on a terrestrial object.

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euphony
member


Reged: 12/02/12

Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: James Cunningham]
      #5583736 - 12/22/12 09:04 AM

Oh yeah, I never thought of that! D'oh!

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John59
professor emeritus


Reged: 11/06/11

Loc: Round Rock,TX
Re: 17 sec (x1024) Camera Sony 960h Exview HAD CCD2 new [Re: mattflastro]
      #5583825 - 12/22/12 10:25 AM

mattflastro, I am really impressed with how you are working with this camera to improve upon its abilities. I am very happy with mine and have found the limitations as you have mentioned to be annoying as well. However in really dark skies I found that it was exceptional. It's ability to perform in light polluted skies is very degraded especially when using AGC. Please keep up the great work and keep us posted.

Thanks again I always believed this had great potential ever since I found this smaller model a while back. (Earlier posts)


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