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Mars too bright
- Seder
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12 years 8 months ago #93616
by Seder
Mars too bright was created by Seder
Hey everyone! I have Nexstar 5 (127mm, f=1250), microsoft LifeCam Cinema HD, Baader UV-IR cut filter. When pointing telescope at mars I see just bright point. I was trying to change settings og th camera but it does not help at all. Did anyone get same problem? Many thanks for your attention
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- dave_lillis
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12 years 8 months ago - 12 years 8 months ago #93623
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: Mars too bright
Hi, you might need to use a barlow for this to bump up the planet size.
Also, do keep in mind that Mars is never large compared to the likes of jupiter or saturn in a scope, its the toughest of the 3 planets to image.
Also, do keep in mind that Mars is never large compared to the likes of jupiter or saturn in a scope, its the toughest of the 3 planets to image.
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
Last edit: 12 years 8 months ago by dave_lillis.
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12 years 8 months ago #93624
by Seder
Replied by Seder on topic Re: Mars too bright
Yes, using barlow lenses 2x and 3x are not enough. here is a picture of what I'm getting
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- dave_lillis
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12 years 8 months ago - 12 years 8 months ago #93625
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: Mars too bright
hmm, maybe out of focus or collimation ?!? I dont know if your scope can be/is collimatable.
maybe try reducing the brightness settings on your capture software also.
maybe try reducing the brightness settings on your capture software also.
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
Last edit: 12 years 8 months ago by dave_lillis.
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- Seder
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12 years 8 months ago - 12 years 8 months ago #93626
by Seder
Replied by Seder on topic Re: Mars too bright
No, it's perfectly collimated and focused. I've tried different settings, but it does not help That's why I'm asking for a help here
Last edit: 12 years 8 months ago by Seder.
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12 years 8 months ago #93628
by mjc
Replied by mjc on topic Re: Mars too bright
If the jpg is faithful to the capture ADU values then it does appear over exposed.
Peak pixel value in red channel is 255 (maxed out)
in green its 191
in blue its 113
So looks like its over exposed.
It might be the capture s/w that you use.
I've had similar problems in the past.
Can't remember the S/W I was using.
Maybe try alternate s/w - IRIS comes to mind
www.astrosurf.com/buil/us/iris/iris.htm
From menu
video / AVI capture
It also does all sorts of processing / image reduction.
Haven't used it in anger - but I did download it and had a quick play because I was frustrated at the problem that you appear to describe.
Mark C.
Peak pixel value in red channel is 255 (maxed out)
in green its 191
in blue its 113
So looks like its over exposed.
It might be the capture s/w that you use.
I've had similar problems in the past.
Can't remember the S/W I was using.
Maybe try alternate s/w - IRIS comes to mind
www.astrosurf.com/buil/us/iris/iris.htm
From menu
video / AVI capture
It also does all sorts of processing / image reduction.
Haven't used it in anger - but I did download it and had a quick play because I was frustrated at the problem that you appear to describe.
Mark C.
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