Soldato
Noob question regarding the gas planets. So being gas, does that mean you could never land on a surface? Would it be just like flying through one big very dense cloud until you come out the other end?
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Well hopefully that's what Juno will tell us
It's possible that gas giants like Jupiter have a solid core, but until we get data back from Juno it's mostly just guesswork. Even if it is solid i doubt you could ever 'land' on it, the gravity would crush you before you got anywhere near, if the atmosphere didn't get you first.
Thanks for your thoughts Mik3.
AP does indeed interest me although I need to walk (crawl actually) before I run. To that end I was going to get a wedge in a few months or a year or so. I need the instrument to be portable to carry 400m on a cart to the back of where I live and the CPC 925 fits that bill nicely. Maybe the CPC 800 instead. Do you think 1.5 inch of aperture is such a big deal for portability?
Why should the FL matter?
KS
Ah yes you could get a wedge. 1.5" wont make much difference. Focal ratio makes a hugh difference to exposure times in AP, say you had a F5 telescope and a F10, to capture the same amount of data in the F10 as the F5 it will take 4x as long, so for every hour spent with the F5 you will need 4 hours with the F10. It wont make a difference to the brightness of the image visually though, but if you are thinking about DSO AP later you might want to consider a telescope with a lower F ratio.
I would ask for advice from http://stargazerslounge.com/ before you commit to buying anything, you will get the best advice from there.
I would ask for advice from http://stargazerslounge.com/ before you commit to buying anything, you will get the best advice from there.
Associate
Another thing for your consideration is that you can always buy something like a 0.8x Focal reducer which will effectively convert your telescope from f10 to f8.
Man of Honour
Soldato
I have the CPC 800 and it is just about portable with man handling, I've picked up a 925 in the past and I would say you will definitely need the cart (make it well padded
) you mentioned.Question! (probably a silly one)
What would happen if you were to reduce the mass and distance between all the celestial bodies of our solar system by a half. So basically everything is made smaller, but every ratio is kept constant, would everything still act as it does now?
What would happen if you were to reduce the mass and distance between all the celestial bodies of our solar system by a half. So basically everything is made smaller, but every ratio is kept constant, would everything still act as it does now?
Soldato
Doubt it, theres probably an inverse square law or somsuch thing.
I should be able to answer that question!
It's too late at night though, I think it won't work as you would need to quarter the mass of everything and not half.
There are too many equations involved, circular motion, gravitation field strength etc.. Whoever made the Universe must have been a maths genius. Oh yes and when Energy gets involved it gets much worse.
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Associate
I'm really not a fan of the forced stereo revolution but if you have some old red/cyan 3d glasses lying around I recommend you all take a look at this guys work:
http://astroanarchy.zenfolio.com/anaglyph-red/cyan-3d-astronomical-movies
http://astroanarchy.zenfolio.com/anaglyph-red/cyan-3d-astronomical-movies
Man of Honour
Man of Honour
Man of Honour
Permabanned
Unlike the universe, this 'official' thread has too few stars
I tend disagree I think there are plenty of stars in this thread , keeps me coming back.
http://stargazerslounge.com/imaging-deep-sky/162933-pelicans-elephants-space.html
I think the "holy mother of god" comment sums that up nicely. So tempted to get the SGL calender
I think the "holy mother of god" comment sums that up nicely. So tempted to get the SGL calender
Man of Honour
Man of Honour