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Space Science and Astronomy thread

Dave have you any photographs you've taken?
Lots!
This was the partial solar eclipse in 2022, taken with a white light filter. I was a split second too late with the (what would have been a fluke) shot. I looked at my camera screen and suddenly saw a plane silhouetted across the sun, along with the moon. But I got the vapour trail:
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Another Jupiter, not as clear, but did get the great red spot:
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Some of the moon:


There is a limit of 3 images!
 

Lots!
This was the partial solar eclipse in 2022, taken with a white light filter. I was a split second too late with the (what would have been a fluke) shot. I looked at my camera screen and suddenly saw a plane silhouetted across the sun, along with the moon. But I got the vapour trail:
Logon or register to see this image


Another Jupiter, not as clear, but did get the great red spot:
Logon or register to see this image


Some of the moon:


There is a limit of 3 images!
Vapour trail one is class!
 
Vapour trail one is class!
I was proud of that. Missing the plane was disappointing though. The alignment had slipped on my telescope so I was just trying to line it up again and all of a sudden the screen went mostly black with an odd shape across it. Then I realised I was looking at the engine of a plane. This was a scope set up to view something 150 million km away, so seeing a plane probably only at 15,000 feet still climbing out of Gatwick, looked seriously big. The pause while I thought "what the hell is that" was enough to miss it.

It would have been similar to this (not my photo!):
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Lots!
This was the partial solar eclipse in 2022, taken with a white light filter. I was a split second too late with the (what would have been a fluke) shot. I looked at my camera screen and suddenly saw a plane silhouetted across the sun, along with the moon. But I got the vapour trail:
Logon or register to see this image


Another Jupiter, not as clear, but did get the great red spot:
Logon or register to see this image


Some of the moon:


There is a limit of 3 images!
Canny good :lol:, sorry joking aside, superb detail. The moon one is a few steps up from what I managed in my early trials, sharpness, clarity, lighting 👍. Then I move on to filters: Would you recommend use? A solar one especially, I've looked at them a few times & wondered because having one would open up far more scope use.
Vapour trail one is class!
Totally agree
Missing the plane was disappointing though. The pause while I thought "what the hell is that" was enough to miss it.
Reminds me of the time a shooting star crossed my eyepiece, total fluke. I thought have I just seen that? I couldn't possibly set myself up [10mm eyepiece] to catch that view again.
 
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Canny good :lol:, sorry joking aside, superb detail. The moon one is a few steps up from what I managed in my early trials, sharpness, clarity, lighting 👍. Then I move on to filters: Would you recommend use? A solar one especially, I've looked at them a few times & wondered because having one would open up far more scope use.

Totally agree
I bought a set of coloured filters (they came with an eye piece set) but I have not used them much. I have been meaning to try them again.

The solar filter I made myself from what is essentially special foil, and was one of the cheapest astro things I have bought:

There are loads of guides online for how to make them. I used masking tape and a cornflake box, then had a sheet of acetate I put across the front just to protect the foil. I had plenty left over so I made some solar viewers. That was a sheet of A4 card folded in half, a letterbox cut out and a bit of film put between the two sides before taping it up. Hold it in front of your face and you can see sunspots.

If you do make one, be very careful. If you have a finderscope which is essentially a small telescope, it will focus the sun on your head and burn you, so remove that. A red dot finder is fine as it does not focus light, but do not look though it. Getting it aligned without looking at the sun can be tricky. I 3d printed a solar finderscope I found online, but for years before I did that, I used to bluetac a match stick vertical to the top end of the scope. When the shadow makes a line down the middle of the scope you know you have your east and west sorted. Then move up and down until the shadow of your scope tube on the ground is as small as possible and then it is likely you have the sun.
 
I bought a set of coloured filters (they came with an eye piece set) but I have not used them much. I have been meaning to try them again.

The solar filter I made myself from what is essentially special foil, and was one of the cheapest astro things I have bought:

There are loads of guides online for how to make them. I used masking tape and a cornflake box, then had a sheet of acetate I put across the front just to protect the foil. I had plenty left over so I made some solar viewers. That was a sheet of A4 card folded in half, a letterbox cut out and a bit of film put between the two sides before taping it up. Hold it in front of your face and you can see sunspots.

If you do make one, be very careful. If you have a finderscope which is essentially a small telescope, it will focus the sun on your head and burn you, so remove that. A red dot finder is fine as it does not focus light, but do not look though it. Getting it aligned without looking at the sun can be tricky. I 3d printed a solar finderscope I found online, but for years before I did that, I used to bluetac a match stick vertical to the top end of the scope. When the shadow makes a line down the middle of the scope you know you have your east and west sorted. Then move up and down until the shadow of your scope tube on the ground is as small as possible and then it is likely you have the sun.
I'd watched some YouTube stuff about viewing the Sun, making a solar filter & about projecting onto some card. The dangers slightly put me off because there was a short article on it in a book I bought to go with a warning section with the info that came with the scope. One YT vid showed someone starting a fire with his scope lined up to the Sun.
 
Photos for sure. Anything that's realistic. Not looking at chucking huge money at it to start with but definitely would love to see what's possible
Long post alert!! Short version, expect to pay £500 upwards to get into astrophotography and it gets expensive very quickly!

Two basics you need to know about telescopes. The telescope has two lenses, one at the front and one at the back. The front one is the aperture and it's job is gathering light. The bigger it is, the more stuff you can see. The eyepiece gives the magnification and these are usually interchangeable. But there is a limit into what is useful. If you buy a high magnification eyepiece for a small telescope they there just is not enough light coming in to magnify. Generally telescopes come with two suitable eyepieces to get you started. The bigger the aperture the better the scope, but the price goes up.

Next there is the mount. There are two types. You have an altz-AZ mount which is really intuitive to use. It goes up and down, left and right so feels natural. But the earth is rotating and although you don't really notice how much the sky changes, stick a telescope on a distant star or planet, and you will soon find it drifting out of view. With an altz-AZ mount, you will have to keep moving it both right and up or down to keep it in view. Where as an equatorial mount, you set at an angle for where you are in the world and it turns in an arc equal to the curve of the earth, making it much easier to keep things in view, but it takes a lot of getting used to, to position the telescope to look at the target you want.

Then there is the other aspect of mounts. Motorised or not motorised? With a motor, it is more expensive and you need to think about power (batteries, power tank, extension lead etc). But it allows the scope to automatically track the stars (both kinds of mount). Being computerised, almost all have GoTo database features. Basically once it is set up and aligned, if you want to see the Andromeda galaxy, you tell it on the keypad and it will move for you. It also means that if you are taking images it keeps the object in the field of view for far longer. An altz-AZ mount is fine for things in our solar system (it is what I have) but not very good for deep sky imaging (star clusters, galaxies and nebula). For that you will need a motorised equatorial mount.

Next there is what you take the pictures with. If you have a DSLR camera then you can put this on your scope, essentially using the scope as a lens. With an equatorial mount you can do long exposures. If you do multiple long exposures of the same thing, then you can use software to "stack" them. Basically that processes images and finds the most clear bits from each image, throwing away any bad bits (atmospheric turbulence means you rarely get 100% clear views). The other option is to get a high frame rate camera, which takes videos and then the software will pull the video apart making each frame into it's own image and then stack those. That is how I took my Jupiter pictures. But you will need a laptop or something to drive the camera with.

Or there is a newer game changer, the smart telescope. You don't look through these. You can put them on a table, control them via a smart phone, view images on the phone and take stacked photos from there:

What I would do is talk to a specialist, and I have found Rothervalley above to be really good. Telescope house is also good. If you look at the link above, down the left you have a "collections" section for things like "General observing £200-£500". I would filter for computerised and these three are good options for lunar and planetary imaging and viewing:

Another option is to find a local astronomy society, mail them and ask if you can join them. People will let you look through their telescopes and you can get a feel for what you see and see if you think you will like it as a hobby. Some people look at a view of something like Saturn and think wow. They are hooked after that. Others see it as a small circle and are disappointed it is not like the Hubble images and give up.
I'd watched some YouTube stuff about viewing the Sun, making a solar filter & about projecting onto some card. The dangers slightly put me off because there was a short article on it in a book I bought to go with a warning section with the info that came with the scope. One YT vid showed someone starting a fire with his scope lined up to the Sun.
Yes, never line your scope up without the filter on. You will likely damage it and the focussed heat through the eyepiece will be intense.
 
So lads and lasses, whats this asteroid thats about to orbit the earth for a couple of weeks our lass keeps telling me that she heard on the radio on Monday
 
Always been fascinated by the space-time continuum, the multiverse theories and the questions of have we been here before and do we exist in parallel worlds?
 
Always been fascinated by the space-time continuum, the multiverse theories and the questions of have we been here before and do we exist in parallel worlds?
Me too.

Just think SAFC tops the Premier League and have been European Champions for the past five years in one of them. (Knowing my luck I will probably turn out to be a Mag supporter in that one),
 
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Reactions: MSC
Always been fascinated by the space-time continuum, the multiverse theories and the questions of have we been here before and do we exist in parallel worlds?
It depends on what definition of parallel world you go by.

Some definitions say that every decision gives a parallel universe, for example one where I didn't reply to this thread. But that means there is an infinite number of universes, with one for every eventuality of everything in the past 13 billion years, and therefore the growth will be exponential.

An interesting thought about that is, if you consider the typical time travel question of could you go back and kill Hitler as a baby, then it would mean that it did actually happen somewhere and rather than change the past, you just move or observe one of the universes where that did happen. So you don't actually need to time travel to change the past, you just skip sideways.
 
It depends on what definition of parallel world you go by.

Some definitions say that every decision gives a parallel universe, for example one where I didn't reply to this thread. But that means there is an infinite number of universes, with one for every eventuality of everything in the past 13 billion years, and therefore the growth will be exponential.
Can't see that being likely. More the question of our particular energy source popping up elsewhere in the universe reformed when spent here.

Reverse Time travel is surely impossible or we'd have met them I'd argue however it's possible to travel forward in time if we could get away from earth at a fast enough speed and back again the earth would for example have moved on 100 years but the traveller will have only aged 14 years. Figures and speeds make this theory variable.
 
That's too far fetched that mate.
No honest I probably began to follow them after they beat Livepool 5 - 0 in the 1974 FA Cup Final having become horribly disillusioned with the Lads the year before when Stokoe's side were decimated by Leeds at Wembley. Who would have thought that a third division club like Leeds could have beaten the First Division Champions as simply as that?
 
With a high frame rate camera (Zwo make some good and reasonably priced once), you might be able to get something decent without tracking. Start a video when it is at one side of the view and stop it when it reaches the other. Depending on your field of view, you might get 20 seconds. Most of the stacking applications will auto align (for things like the moon you can set some alignment points like bright bits on crater edges), so you will likely get away with it.

Although uncommon, I can't see a reason why you can't join say 5 videos together to have around 100 seconds of frames. That will give you 100 seconds of data.

I really need to get out with my scope. I have hardly done anything in the last year. Last winter was so crap weather wise and because of building work and things going on, I've not had a clear place on my patio to set up. I should probably get a decent groundsheet for the lawn, but this year my lawn was waterlogged until late may, and then we were into light nights.
Depends on what software you're using for aligning & stacking, but most of them will let you load multiple video files - so there's no need to join them...
Lots!
This was the partial solar eclipse in 2022, taken with a white light filter. I was a split second too late with the (what would have been a fluke) shot. I looked at my camera screen and suddenly saw a plane silhouetted across the sun, along with the moon. But I got the vapour trail:
Logon or register to see this image


Another Jupiter, not as clear, but did get the great red spot:
Logon or register to see this image


Some of the moon:


There is a limit of 3 images!
Nice! I managed to take this below of the Moon last year after I upgraded my camera to a higher resolution ZWO... it's a composite of 13 videos stacked to individual panels and then sutured together using Microsofts ICE - something I've found very useful for blending images together (weather astroimages or even normal photo panoramas).... Using an 8" Celestron scope...
 
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Depends on what software you're using for aligning & stacking, but most of them will let you load multiple video files - so there's no need to join them...

Nice! I managed to take this below of the Moon last year after I upgraded my camera to a higher resolution ZWO... it's a composite of 13 videos stacked to individual panels and then sutured together using Microsofts ICE - something I've found very useful for blending images together (weather astroimages or even normal photo panoramas).... Using an 8" Celestron scope...
Stunning image that.
 
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