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DaveNicko

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About DaveNicko

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    Leeds, UK

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  1. Well done! I got the scope out for the first time in a while only to be scuppered by the awful Leeds light pollution. :-(
  2. I think some confusion arises with the cleanliness of mirrors due to the human mind trying to equate a telescope mirror to a (for example) bathroom mirror. When you look in a bathroom mirror you see an image of yourself. If you look at your left eye, the mirror is reflecting the particles of light in that region of the mirror alone - the rest of the mirror is redundant. If you were to place black card over the rest of the mirror (except your eye) you would still see the reflection of your eye at the same intensity as if the card weren't there. Conversely if you were to block the mirror with bl
  3. I've been on Holiday for a week! Sad news. It might be worth going to a local astro society to see if they can help. It's strange that it works on some peoples 130p but not others... Maybe there is something simple we've all missed? Dave.
  4. Thanks! My future plans include: Mount, imaging scope, and CCD for what will likely be variable star observing rather than pretty pictures. Followed by (possibly at the same time) a diffraction grating. This won't be for a few years though - at first I plan on starting getting some visual variable star observing in. But at the moment I'm just enjoying my new scope (200mm dob)! Dave.
  5. Nice spectrum! Are you using a diffraction grating? (I say this as someone who knows very little about astro spectroscopy). I guess the spectrum is directly horizontally right of the SN in the image? At some point a long time in the future I would like to get into spectroscopy - but not for a while! Dave.
  6. Yes it is very difficult. Even though I could (just) see it directly, the brightness changes when you look at another star, and the star dims when you look directly at it! I just tried switching quickly between stars and SN to try and compare it. I only looked at the three stars in a line pointing to the SN, and then went inside to look at the chart - so both those points will introduce further error. It still looks to be increasing in brightness though - hopefully it will reach Mag 8 so it will be visible in Binos... Dave.
  7. I got 11.25-11.5 last night. There are some links to light curves/magnitude charts in this thread: http://stargazerslounge.com/topic/206148-m82-supernovae-light-curve/ It seems to still be steadily increasing in brightness at the moment... Dave.
  8. The second link seems to be broken now. But you can go to the following link: http://www.aavso.org/vsp/ And enter "sn 2014j" to get the chart. I had another look tonight and estimate mag 11.25-11.5, which is quite some variation! But to be fair it's the first time I've ever noted the magnitude of an object..
  9. Lots of gamma rays I imagine :-)
  10. No problem :-) I imagine you could read by it at night and see it during the day of were on a planet orbiting a neighbouring star. Much like the crab nebula in 1054 (although that was a core collapse Supernova, not a type 1a).
  11. *points of light - wish I could edit posts!
  12. Actually the size is a bit of an illusion. The supernova is actually a tiny spot of light - like all stars - and only seems big because of the airy disc which occurs due to diffraction of photons. The only things in the night sky which don't appear as points if light are the planets - they appear as discs. And also some of the larger closer stars (like Betelguese) I think have been resolved as discs photographically... Hope that makes sense, hopefully someone will correct me if I'm wrong... Dave.
  13. Thanks all for the comments! I managed to see the S/N too, so three firsts last night! This being the first time I have seen it I don't know. However I think the seeing had some say in it last night... Dave.
  14. OK. I know it's not a variable star, but the following is a link to the light curve of the recent supernova in M82: http://www.aavso.org/lcg/plot?auid=000-BLG-310&starname=PSN+J09554214%2B6940260&lastdays=20&start=2456678&stop=2456698&obscode=&obscode_symbol=2&obstotals=yes&calendar=calendar&forcetics=&grid=on&visual=on&r=on&fainterthan=on&bband=on&v=on&pointsize=1&width=800&height=450&mag1=&mag2=&mean=&vmean= Obviously there isn't much data yet, but it will be interesting to follow over the coming weeks. A
  15. Yes, got it! Just about to go to bed and I looked outside - gaps in the clouds. And there it was. Brilliant, three firsts tonight (along with GRS and Io transit on Jupiter) :-D
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