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Bad optics or bad eyesight?
- Keenan
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18 years 5 months ago #30765
by Keenan
Replied by Keenan on topic Re: Bad optics or bad eyesight?
I have already had a look at Jupiter. I could see 3 moons and fancied I could see 4. Also had a look at Saturn a few weeks ago.
I have been out a couple of nights in winter - I have a solution for the cold nights - a patio heater. It keeps the frost off the scope and the observer!
I use the binoculars most of the time. It's so much handier than dragging out and setting up the scope, plus a lot easier to use.
Thanks for all the tips.
I have been out a couple of nights in winter - I have a solution for the cold nights - a patio heater. It keeps the frost off the scope and the observer!
I use the binoculars most of the time. It's so much handier than dragging out and setting up the scope, plus a lot easier to use.
Thanks for all the tips.
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- ftodonoghue
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18 years 5 months ago #30768
by ftodonoghue
Cheers
Trevor
Replied by ftodonoghue on topic Re: Bad optics or bad eyesight?
Just one other tip Keenan
If you are using a patio heater near the scope it will probably lead to an unsteady local atmosphere and cause shimmering of any images in the scope.
If you are using a patio heater near the scope it will probably lead to an unsteady local atmosphere and cause shimmering of any images in the scope.
Cheers
Trevor
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- Keenan
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18 years 5 months ago #30776
by Keenan
Replied by Keenan on topic Re: Bad optics or bad eyesight?
Thanks everyone for all the tips so far, maybe I'm getting hooked!
I've been looking at those photos again and I'm puzzled. I can see stars, looking like I would expect 9pinpricks of light), but then there's a big reddish-brown blob with a green halo which is the object in question.
This image is a typical example, one of a dozen where the same object appears, albeit looking different in each one - allowing for camera-shake and newbieness, is this capella?
The proportions look all wrong to me - any ideas?
Several other photos at www.propertyfile.net/astro [/url]
I've been looking at those photos again and I'm puzzled. I can see stars, looking like I would expect 9pinpricks of light), but then there's a big reddish-brown blob with a green halo which is the object in question.
This image is a typical example, one of a dozen where the same object appears, albeit looking different in each one - allowing for camera-shake and newbieness, is this capella?
The proportions look all wrong to me - any ideas?
Several other photos at www.propertyfile.net/astro [/url]
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- dmcdona
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18 years 5 months ago #30780
by dmcdona
Replied by dmcdona on topic Re: Bad optics or bad eyesight?
Keenan, I suspect that what you think are stars are in fact 'hot' pixels - electronic noise within your camera and nothing to be ashamed of
The only 'true' image recorded seems to be a bright star, albeit smeared over a small portion of the frame.
In order to diagnose it better, can you tell me what camera you're using and what was the exposure time?
Cheers
Dave
The only 'true' image recorded seems to be a bright star, albeit smeared over a small portion of the frame.
In order to diagnose it better, can you tell me what camera you're using and what was the exposure time?
Cheers
Dave
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- michaeloconnell
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18 years 5 months ago #30781
by michaeloconnell
Replied by michaeloconnell on topic Re: Bad optics or bad eyesight?
I think what Dave is saaying may be correct. My guess is that the camera has difficulty focusing as there's nothing to focus on , hence the blur. Also, as the sky is relatively dark, the exposure becomes long and the cmaera shakes in your hands while the shutter remains open.
Just my hunch...
Just my hunch...
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- dmcdona
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18 years 5 months ago #30783
by dmcdona
I didn't think of that Keenan - can you set your camera to manual focus on infinity? That'd help - autofocus would probably get very confused...
Replied by dmcdona on topic Re: Bad optics or bad eyesight?
IMy guess is that the camera has difficulty focusing as there's nothing to focus on
I didn't think of that Keenan - can you set your camera to manual focus on infinity? That'd help - autofocus would probably get very confused...
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