30th May Moon and Jupiter
- JohnMurphy
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18 years 6 months ago #29050
by JohnMurphy
The Celestron 102SLT (F6.5) is a relatively cheap achromat - so chromatic abberation is a given (The first time I looked at Jupiter I thought I had bought a monkey, but since it's risen I can put most of that down to seeing. I don't know how familiar you are with the Pixel Plus (Toucam) - a lot better than me I suspect, but it automatically gives you a setting for outdoor shooting, or allows you to control the red and blue channels manually (Green for some reason isn't an option (but neither is it in the Registax RGB settings). When you do adjust R&B manually you can get much more detail by playing about with the settings, the default outdoor setting ends up with my previously posted red image with detail all washed out. You never mentioned is the second image better? - I appreciate all the advice I can get.
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Replied by JohnMurphy on topic Re: 30th May Moon and Jupiter
I can imagine that reducing the red channel might help, if it was a perfect solution then nobody would be getting the IR blocking filter.
As for the blue, thats unexpected, do you think the scope suffers from chromatic abberation? are you seeing a blue line around the planet visually?
The Celestron 102SLT (F6.5) is a relatively cheap achromat - so chromatic abberation is a given (The first time I looked at Jupiter I thought I had bought a monkey, but since it's risen I can put most of that down to seeing. I don't know how familiar you are with the Pixel Plus (Toucam) - a lot better than me I suspect, but it automatically gives you a setting for outdoor shooting, or allows you to control the red and blue channels manually (Green for some reason isn't an option (but neither is it in the Registax RGB settings). When you do adjust R&B manually you can get much more detail by playing about with the settings, the default outdoor setting ends up with my previously posted red image with detail all washed out. You never mentioned is the second image better? - I appreciate all the advice I can get.
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
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- dave_lillis
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18 years 6 months ago #29054
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: 30th May Moon and Jupiter
The colour in the second image is definitely better, not fully there yet but definitely going in the right direction.
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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- JohnMurphy
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18 years 6 months ago #29061
by JohnMurphy
Any tips on what to try next?? Maybe the IR blocking filter will help?
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Replied by JohnMurphy on topic Re: 30th May Moon and Jupiter
The colour in the second image is definitely better, not fully there yet but definitely going in the right direction.
Any tips on what to try next?? Maybe the IR blocking filter will help?
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Please Log in or Create an account to join the conversation.
- dave_lillis
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18 years 6 months ago #29070
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: 30th May Moon and Jupiter
The IR blocking filter takes away some ofthe glare and helps definition, but it sounds like there is more then that going on here.
Lets assume that your webcam Vrecord screens are the same as for the toucam, set your webcam settings to the folloowing and see what happens.
goto the video format section, in image controls set your gamma to half, the saturation to full and brightness to half, make sure that the control "full auto" is not selected.
In Camera controls, set colour balance to auto, slide the shutter speed to as low as possible, in this case 25fps, adjust the gain until a reasonably bright image is on the screen, if its too bright then increase the frames per second, obviously make sure the auto exposure button is off.
In the capture tab, there is a max fps, go to it and unselect "use frame rate"
Let us know how you get on.
Lets assume that your webcam Vrecord screens are the same as for the toucam, set your webcam settings to the folloowing and see what happens.
goto the video format section, in image controls set your gamma to half, the saturation to full and brightness to half, make sure that the control "full auto" is not selected.
In Camera controls, set colour balance to auto, slide the shutter speed to as low as possible, in this case 25fps, adjust the gain until a reasonably bright image is on the screen, if its too bright then increase the frames per second, obviously make sure the auto exposure button is off.
In the capture tab, there is a max fps, go to it and unselect "use frame rate"
Let us know how you get on.
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
Please Log in or Create an account to join the conversation.
- JohnMurphy
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18 years 6 months ago #29080
by JohnMurphy
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Replied by JohnMurphy on topic Re: 30th May Moon and Jupiter
Thanks Dave I'll give those settings a try.
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
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