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Showing content with the highest reputation on 29/11/13 in all areas

  1. 7 points
    It looks as though ISON has stuck two fingers up to the Sun.
  2. 3 points
  3. 3 points
    A shot of Orion taken from my garden on the 26th November with a Cannon 1100D from a static tripod . 100x 4 sec exposures, F4, ISO400. Stacked in DSS, processed in PS CS4. Not the greatest but getting better. An artsy one for those who like spikes!
  4. 3 points
    Just warned the wife: if ISON survives then I have to break out the xmas 10x50's early to give this comet first light!!! It would be rude not to, wouldn't it?!
  5. 2 points
    I've tried turning my back on the moon but the tidal bulge of my stomach seems to be unaffected. Disgusted of Etoile St Cyrice.
  6. 2 points
    my scope time is unfortunately too limited to experiment (will be in Spain next weekend, yay, hope for clear skies and bits of Ison debris ! not planning to sleep...) But most of my earlier stuff is less than 30 minutes total exposure - think my favourite is till this one, 5x 3mins:
  7. 2 points
    Hi David I've found the Mellish technique works really well for adding detail to galaxies and nebula, when I started sketching with my old 200P galaxies were just a faint smudge so I could get away with using graphite pencils and just smudging it with my finger. Moving up to 12" aperture actually showed detail and I wanted to record that in the easiest way so those pencils were replaced by pastels which you can rub on a piece of sandpaper then use something to brush that dust on which gives you more control (in theory! ). I'd say the Mellish technique is a little more time consuming and can also be frustrating at times, pastel pencils can be a pain as they are quite soft and tend to break when sharpening, you also have more brushes etc which you can guarantee you'll drop and have to hunt around for in the dark!! Sketching onto black paper is good though, I really like going to the darkest sites possible and even a red light onto white paper seems too bright for me, the black paper doesn't reflect any light back at you so you can get away with using a brighter light. I use a Kindle reader light wrapped in red acetate which just clips onto the sketch pad. Funnily enough I don't really get cold hands, I find if I just keep my head and body warm really warm I'm ok. I've got fingerless gloves but rarely use them and find the only times they come in handy is when there is a really cold wind. The drawings don't take that long to do so maybe 20 minutes at most, sketching is really all about observing and I figure that as long as I'm looking through the EP more than looking at the sketch pad then I'm doing the right thing. In total each sketch/observation takes between 45 minutes to 1 1/2 hours it just depends how interesting the object I'm viewing is. I never rush, sketching is way to relaxing to rush it! The first pic below shows what I use now but probably half of that is for lunar sketching which you won't need for DSO's but these are the sort of things you'll need to get - Conte Pastel Conte pastel drawing pencils White ink pen Brushes ( I use 10mm/6mm/4mm ) Cotton wool buds Rubber Pencil sharpener ( Save yourself a lot of frustration and get a Dahle 155 like in the pic, everything else I've tried just doesn't work! ) Sandpaper I just google art supplies and go for the cheapest option after delivery. I'd try an open cluster first and just use a normal graphite pencil on white paper just in case you find sketching isn't for you. Hope that helps a little.
  8. 2 points
    My favourite quote so far : "It is now clear that Comet ISON either survived or did not survive, or... maybe both," Bruce Betts, director of projects for the Planetary Society, said in a Twitter update. "Hope that clarifies things." Battams said it's too early to write ISON off completely. "Right now it does appear that a least some small fraction of ISON has remained in one piece and is actively releasing material," he wrote. "We have no idea how big this nucleus is, if there is indeed one. If there is a nucleus, it is still too soon to tell how long it will survive. If it does survive for more than a few days, it is too soon to tell if the comet will be visible in the night sky. If it is visible in the night sky, it is too soon to say how bright it will be. ... I think you get the picture, yes?" Story here: http://www.nbcnews.com/science/comet-ison-vanishes-puff-mystery-it-goes-around-sun-2D11670914
  9. 2 points
    The sketch in post #4 is a brighter version of what I see with my 10" at a dark site. It's a real toughie from my backyard, needs a transparent moonless night to see anything at all. You can always pan down to M42 to get your 'nebula fix' Regards, Ed.
  10. 2 points
    Like I said last night, I think everyone was/is calling this far too early. To my untrained eye, the most recent image looks no less bright than ones taken on the 27th. The only real difference is that the trail hasn't had enough time to build up yet due to the sharp change of direction.
  11. 2 points
    Sent from my iPhone using Tapatalk
  12. 2 points
    I think a lot of people would have been to embarrassed to admit to making those mistakes. Good on you though for sharing, if it means other's don't get injured.
  13. 1 point
    So I'm up in a caravan rural Cumbria trying to follow the excitement of Ison's passage with only a 3g dongle in my cheap Chinese tablet. That 500Mb allowance is getting some hammer. So I took a break to see if the solid overcast had dispersed. And it had, mostly. The milky way arched almost from horizon to horizon. I grabbed my 10x50's and had a quick look for Comet Lovejoy. I have a great northerly horizon from the caravan decking but that's the only direction I get light pollution as I'm looking directly towards Penrith. Anyway, there was a band of cloud right where I didn't want it. So no Lovejoy. M31 was easy naked eye so thought I'd have a look for M33, something I've tried many times to find and failed. But that was from my light polluted back yard. This time I nearly fell over it. Quite easy and obvious in the bins. There was clearly some shape to it but I as my eyes got better dark adapted high clouds slid in and ended by session. I really need to get my old 6in Newtonian up here sooner rather than later! Sent from my ZT ICS using Tapatalk 4
  14. 1 point
    You would need to find something VERY precious indeed to make mining it from the Moon economic. The figures don't add up at the moment. The motives must be as a technology demonstration and for the PR value.
  15. 1 point
    I would just leave it be, my workshop was over size 25' by 16' with a apex roof about 12' at the pich, but figured it can not be viewed by any other propertys so i knocked down the old garage and built my workshop on the same spot, in the process of building i needed a hand to move a large hired cement mixer wonders of down the close and there's a guy 4 doors away in his garden, said hello ect, can you give me a hand, yes he says and off we go, he inquires what i'm building ect, turns out he is the parish planning office, to quote " your new building looks smaller than the old one, any problems refer them to me" a narrow escape i must say....
  16. 1 point
    I think I would agree - don't stir it.
  17. 1 point
    I tried the pair in some 100mm bins and they were fine. My eyes are 72-73 mm apart, so I am very tolerant.
  18. 1 point
    You might need to this pair to diet before using them in binoviewer
  19. 1 point
    With the ASI120 cameras I'd suggest you're aiming for a focal ratio of between f/20 and f/25. A true 2x barlow would probably be ideal, or if you could find one that did 1.5x and perhaps use an extension with it? If you have the Revelation barlow already and you can get a decent image and frame rate without pushing the gain really high then I'd certainly give it a whirl. There's probably no benefit in using such a large focal length, but if it's not doing perceptible harm then that may well work for you. I used the 2.5x barlow and extension with my 127 Mak when I was using the SPC900, but dropped back to just the barlow for my ASI120 because the image was too poor otherwise. That's still a little excessive, but it's far better quality than my 2x barlow, so compromise is the order of the day James
  20. 1 point
    I don't know what you are talking about but it sounds blumming impressive!
  21. 1 point
    Entirely reasonable. You may need to open that single malt you were saving for Xmas to keep the cold air off you too
  22. 1 point
    Hey guys, sorry I haven't been around much recently - have finally qualified as a GP and have been up to my eyeballs in work. Finally settling down, and wondering when the next meet at Blaenavon will be. Rhys
  23. 1 point
    Absolutely mate. I just gotta wait till these $%%^^ clouds melt away..
  24. 1 point
    You have to take into account SOHO is nearly 30 years old and a fairly knackered spacecraft. The high gain antenna is broken as are all the gyroscopes. If it was a car it would be on the back of an AA lorry. Also it is not the only thing out there needing a down link.
  25. 1 point
    Well the Sun gravity is 28G (28 times Earth gravity) at it's surface. Not sure how much reduced it is at the comets nearest approach, but it's probably not much less. You wouldn't really feel it though if you're on a fly-by orbit. The reason comets can break up is because they are so weakly bound together that it takes very little force to break it.
  26. 1 point
  27. 1 point
    Easily done that! We're not alone
  28. 1 point
    Now you're just getting mean Grumpy, next thing you'll expect us to start drinking beer at room temperature .................. oh the horror of it !!!!!
  29. 1 point
    You can use JPEG - although not the best format. you should have got something. Unfortunately I can't view the original zip file (work security blocks it). when I save a stacked image from DSS I save it both embeded and not embeded and then continue using GIMP.
  30. 1 point
    You'll be needing a 3" extension at least. I've used them with a refractor and an Orion Optics Newt without problems. Without a rotating focuser you're going to have to revolve them to view. Not only that , but you're going to need double eyepiece purchase to get up to a useable x100-x120. I 'd see if you can try them out anywhere, they don't suit a lot of folk. A good ep goes down well at Christmas and you'll use it every session, Nick.
  31. 1 point
    After quite a bit of reading about the types and quality and IPD of binoculars etc and after a bit of worrying I decided to just take the plunge and get the Apollo 15x70's and I have to say, very awesome! They have certainly impressed friends and family even from a light polluted back garden but took them out to a dark site last night (albeit the moon was sometimes popping out from behind clouds) but incredible just how much extra detail you can see with them. The moon craters look especially impressive against the dark side of the moon Not sure I can hold them up for a long time though, heavier than I thought they would be so getting a Manfrotto 628b monopod will grip ball head on it. Play with this a while I think and then look for an astrophotography setup.
  32. 1 point
    Excellent work,keep it up,glad you enjoyed your visit,well worth the trip up north i think you`ll agree,hope you can make next year, Regards Mike
  33. 1 point
    23:30 is up from C3. A nice bright object continuing to clear the Sun.
  34. 1 point
    Good stuff there Kieran.You said I was busy round my scope which I definitely was by the looks of it.
  35. 1 point
    Seconded ! Great day and evening, took away all the (financial) pain heard from my dentists this am. runing well into 4 figures :(
  36. 1 point
    That was excellent Kieran ...nicely edited too ...very cool! Mike
  37. 1 point
    Have to agree, that was a really good movie.
  38. 1 point
    You've the fever bad Mike
  39. 1 point
    you will have lots of fun with that set up i have the same my self... roll on clear skys
  40. 1 point
    It may have shed a few pounds in the sauna
  41. 1 point
    Found the American Article on using the slide off shed http://www.airplanesandrockets.com/astronomy/observatories/telescope-sky-official-observatory-construction-page.htm Looks a readymade solution
  42. 1 point
    Don't, it will be next to the Sun, very dangerous to look at that time! It's a bit late now to try and see it before it reaches the Sun. If you wait, assuming it survives it will re-emerge maybe with a good tail and be visible on its return from the close encounter - I think 3rd Dec onwards would be good to view it, where it will go right across the sky towards Polaris and beyond. That's if it survives, there's a good chance it will not, but it might...
  43. 1 point
    Hi I recently built a very similar box to the one you are intending to build. I used a similar battery and Stanley tool chest (they was on offer in B&Q) I insulated the bottom with HD polystyrene, and used MDF to fashion a base. My wiring from the battery goes to a n isolator from there through a 30Amp fuse to a distribution box, from there to a 6 way fuse holder and from there to the outlets. Also all 12V plugs for all equipment is also fuse, belt and braces I know, but you can never be to careful. I also included as part of the build a 12V battery conditioner, keeps battery topped up at all times. at this end of the box I fitted a 12V fan and vent just in case any battery fumes would build up. I am currently working on a 4 way dew controller which which will be fitter above the outlets. I have attached some pictures, I hope this may be of some use to you. Outlet side of box, 5 x 12V outlets individually fuse, and a Volt Meter plus main on off switch Rear of box showing fan outlet plus on/off switch for fan Inside top of box, battery conditioner plus storage for laptop and bits and pieces
  44. 1 point
    If you don't have Stellerium download it and then choose a area of sky that you have good view of, set the filters in Stellarium to show Messier objects and work your way through them the South is the better FOV as ever thing you can see will over the following year pass through this area. There are free Telrad map to download these show the Messier objects and while a Telrad would be good they work just as well with out and can be aligned to the Telrad circles in Stellarium for star hopping..
  45. 1 point
    Correct! Since there's been some discussion about it, here is how it fits: It's just some baader solar film made into a disc which in turn is attatched to a cardboard tube which I measured to fit into the scopes cover hole thing. It's not the nicest to look at but it does the job. Or it used to anyway. I just want everyone to remember to never ever point there scope at the sun without a cover on. Otherwise your eyepiece will turn into a photon powered incinerator.
  46. 1 point
    Agreed and it's a possibility but the conical nature of the device led me to challenge that assumption. Not that it really matters. I'm just pleased that Azure wasn't hurt. I was rather hoping we could possibly include it in a safe solar observing sticky.
  47. 1 point
  48. 1 point
    Mizar and Mizar B, Alcor . Mizar and Alcor the slight refractors on Mizar is Mizar B Mizar and Mizar B
  49. 1 point
  50. 1 point
    I thought I'd try killing some of the blue cast and gradient on M81/82 and a bit more of a stretch and high pass sharpen:
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