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About rockystar

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    Sub Dwarf

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    Bury, Lancs, UK
  1. WADAS forum 4

    It did look lovely out there when we got home at 11:15, but after a couple of beers and feeling tired, it was bed for me It also looked lovely at 2:15 when I had to go pee. Imagine what that sky would have looked like in Galloway... :whimsical brian cox emoji:
  2. WADAS forum 4

    you going to finish off that horse's head you started last week? Is it the Leonids meteor shower this weekend too? @Ryan P do you reckon they were a couple of early Leonids that we saw last week?
  3. Surely there must be a mistake.......

    If it stays clear today, I'd have had 3 clear nights and not been able to use any of them: Thursday - took daughter to an early Astronomy Club Meeting, but total cloud cover, brought her home with the plan to go back to the grown-ups meetings, home disaster prevented me getting back out - crystal clear from just after 8pm! Friday - nothing special, just missed out on the clear skies because i didn't look! Saturday - good forecast again for this evening, but we've got a rare night out planned... Oh well; for me, it is just a hobby and you can't let it get in the way of life.
  4. Jupiter and venus are currently early morning objects, if you're an early bird; and very easy to find In the east
  5. WADAS forum 4

    Just me and @Ryan P last night (though I'm lead to believe that Damian went without setting up, before I got there). It was a good night with some lovely skies. Found M33, M34 and M1 for the first time. Also had a look at a couple of other regulars (M31/32/110 and M81/82). And there were a couple of shooting stars too. Not a big list of targets but it was nice to be out, even though it was cold with that wind. And good chatting with Ryan.
  6. WADAS forum 4

    Cheers Mark, I'm on my way up there
  7. WADAS forum 4

    Is there anyone up at winscar at the moment? I was just about to set off - wife cooked a roast dinner, i couldn't leave that behind.
  8. WADAS forum 4

    Wife has cancelled her plans, so if there are a couple of you heading out, I'll join you at about 7:30-8
  9. WADAS forum 4

    I also have conflicting child care duties, so won't be able to join you anyway
  10. WADAS forum 4

    Doesn't look too bad on MeteoEarth: http://www.meteoearth.com/#/,0.93,54.05,20.21,8,1,1,0,0,0,time=1510527226 I might be up for a trip to Winscar (need to run it past the missus first, and check that she isn't going out), Sutton Bank would be too far though for me. I'll keep an eye on the thread, see if anyone is heading out. Anyone know if the roadworks on Woodhead Pass have finished?
  11. Moon filters

    I on the other hand do prefer to use a filter; I just find it a bit uncomfortable observing the moon without one. I use variable polarising filter, that way you don't need to choose, you can have both, and many more values as well If you want a fixed value one though, I'd say the lower value one; you only want to take the glare away. But, as you have seen above, check that you actually need one first. And don't buy a really cheep one that will make the moon look green.
  12. Success...

    And now you've had the good stuff you'll start planning on where to move to next Try the ring neb again from your garden, now that you've seen it you may just find it now appears - it won't stands out like I your dark sky unfortunately
  13. Gravity v Velocity v Time

    Check out the muon; their rate of decay says they should never reach the earth's surface. But we detect them all the time - this is because they travel at near the speed of light; from our perspective the muon's clock is running slow and from the muon's perspective the distance to the surface is shorter than we measure it. It's all very bizarre, because we don't experience the universe at that speed, but fascinating all the same.
  14. Gravity v Velocity v Time

    To quote Dr Neil deGrass Tyson: "nature is under no obligation to make sense to you"
  15. George has the answer there - it's to do with turning around. Even if the acceleration were minimised as much as possible, they are still changing direction and actually entering a different frame of reference, whereas the person on earth maintains their frame of reference throughout. With the clocks on the train and the platform, you are correct in that both observers would experience each others clocks running slowly. In the case of the traveler to another star, when they change direction they actually "see" the clocks back on earth speeding up and over taking their own until they get back up to their relativistic, constant speed - but there is General Relativity involved her, and that's complicated This is an excellent course to help understand it: https://www.coursera.org/learn/einstein-relativity/home/welcome it's a bit on an investment in time, but well worth it if you have a genuine interest.