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  1. After a year of occasional trial and error I have my first meteor image, not of one of the several Perseids I saw on the morning of August 9 but a fainter sporadic in Cassiopeia. The sky was beginning to lighten with the dawn. Not very impressive but I guess we all have to start somewhere. It's very tempting to leave the camera out all night shooting away by itself and then review the images afterwards, but how can meteor trails be unambiguously distinguished from artificial satellites without visual confirmation? For one, the previous and subsequent images had no evidence of a satellite, also there are bursts of brightness in the trail. Are there other ways to distinguish a meteor trail from other objects? I understand this may be an old topic Equipment: Canon 450D, 24mm f 2.8, 10 sec exposure at ISO 1600.
  2. Thanks for the comments, it helps to know I'm on the right track. I've thought briefly about writing a script to do the calculations, but it would take a fair bit of work - would love to be able to get round to it. Cheers, Martin
  3. Trying to work out when the variable star Algol was suitably placed for observing in the UK I ended up producing the chart attached below. It shows a graph of nautical twilight start and end over the year overlain by the times at which Algol is at an altitude of greater than 10 degrees, calculated using an online planisphere. At these limits the star may be a difficult object to observe, but I am erring on the side of caution. I have not seen anything like this from my online searches. Using the chart makes it easy to identify visible minima of Algol, however I am keen to know what anyone here thinks of it, good or bad. Best wishes, Martin algol_visiblity.pdf
  4. Gosh. Thanks for all that, and thanks for the ideas, I'll try and include them soon, when I can get round to it. Thanks DP, just trying to keep you on your toes :-)
  5. Hi, I'm Martin Palmer-Smith and I've just started a new website which gives users a calendar of astronomical events. You can browse by object, month or event and print out the list generated - sticking it to your pinboard/noticeboard is one way I see it being useful. It's up and working but one or two bugs and typos have already been pointed out, so I'm still very much developing it. Any comments or criticisms will be welcome. See it at Astronomical Calendar home page Many thanks, Martin Palmer-Smith
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