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About Wiu-Wiu

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  1. LED pollution

    as for safety factors... Burglars need light to work and flee, so turning off the light will force them to make light, and stand out. They don't really like that Numbers show that crime does not rise when the light is turned off. For traffic: when it's dark, people tend to drive slower (or better: when fully lit, people tend to drive faster). If lighting would stand for safety, well, I guess there would be no accidents anymore... Yet... there are. Accentuating the dangerous places would make drivers more careful that a dangerous spot is coming up...
  2. Dobsonian Dew Control

    I had some problems with my shroud obstructing the lightpath of my truss dob. Especially when it was dewed up, the stretch was nowhere to be found and it became saggy. So I installed a flexible dew shield on the inside of the trusses. It has velcro so I can make a perfect fit. Last month I tested under severe dew conditions, where 8 (!!!) other dobsonians were all fogged up or they had to use hair dryers to unfog their primaries, mine only fogged up after 3 nights in the last hour (about 5 am, when all others were already inside) WITHOUT once even using my cooling fans on the primary. I did use my secondary heater quite a bit, as that part is not protected from the elements. I am thinking of buying a second shield so I can chuck the shroud, this has proven to be an awesome solution.
  3. LED pollution

    You could ask the local authority to make sure the LED lights are less than 3000K. and the lamps are installed correctly. Over here, we see they just replace lamps without further notice of installation guidelines, making that there are as many lights as before, shining brighter, and still not pointed where they should. It should be punishable by law. As sky glow might diminish, because LED fixtures are usually aimed to where they should shine, not ALL stray light will be capped off, and you'll have to deal with the glow of white light in stead of orange light.
  4. A golden harp, a smiley, and a famous logo

    Thank you! Software used is photoshop. 600 dpi scan to jpeg, clean background from smudges and artefacts, invert, new fill layer on top to make the black frame and text, levels adjustment for background, sometimes I dot some color in the stars if they stood out.
  5. NGC 1502 - The Golden Harp Cluster I added a bit of red into the background, as this one was made from home, where the circumstances are aweful. The day before, I only made a few field sketches: NGC 743 (136x) Markarian 6 - on the edge of the Heart Nebula, its appearance rang a bell, and wondering if I should sketch it, I thought: Just do it!
  6. Bright PN and a fuzzy ball

    Some field sketches, as I don't get to spend a lot of time at the eyepiece lately... All done with a 12" dobsonian under moderate skies. NGC 6543 - Cat's Eye Nebula. It's a bit elongated, but clearly bright and big. Nice object! NGC 7009 - Saturn Nebula Also a bit elongated, no further details as the object was standing too low, and in a messy lightpolluted area. M 72 A small and faint fuzzy ball, not resolved into stars, but clearly round and directly visible.
  7. Last nights session

    Saturday was by far the best night in weeks (well, at least over here...), looks like you did manage to get some decent sketching done, I only managed some field sketches. As for the internal struggle: astronomy is my way of letting the stress out... although I do feel the need to book some progress in checking off items off my list, when this doesn't quite work, at least I can be at peace knowing that they will still be there next week, next month, next year,...
  8. True. When portability is not much of an issue (or money ). I think the AVX is a good deal, maybe I am Lucky with mine, but I have to say that since I curbed PHD and switched to MGEN my guiding has been WAY better. I have chosen to invest my budget to upgrade my scope, when I have enough experience I might consider an upgrade for my mount. it is as you say: setup and walk away... apart for the occasional check of cables and focus, I can pretty much leave it and do other things. After that.. I might get an acute case of Aperture Fever.
  9. As for maximum load for an AVX: I have mine bearing a 5" apo triplet (the maxvision series), with upgraded moonlite focusser, and an Orion shorttube guidescope, and although I have reached the limits of my mount (I had to get a second counterweight to balance it off), I get better guiding results than with a lighter telescope. They are not 100% though, and I only make 5 minute subs. I usually have to get rid of about 1 sub per hour worth of lights. if I get another mount, it will be because of sturdiness or even more precision, not because it fails me (probably because I wanted a bigger scope) Most people who have this scope have upgraded the focuser already, so it is full frame ready. No flattener included though. I'm looking into that for when I'm ready to go full frame myself. but I bet this is a good value scope and if you can find one second hand, it will fit quite a bit of your demands. good luck!
  10. They look like regular satellites, I think they won't flash like that anymore.
  11. In June, I was observing when suddenly something caught my eye. It looked like a wishing balloon, but following the movement, it grew like a string of lights. Then suddenly it struck me: there was a launch of 10 new Iridium satellites a while before, and what I was looking at was this 'train' of satellites and the launch vehicle. I even managed to spot it through my telescope, showing a string of bright spots, but with smaller spots in between them, just a bit 'offset' of the line. Now there's a view you don't see every day! well.. Spacex just launched another 10 of them! So keep your eyes open, they may fly over your head tonight! I looked for flight data, but it might be too soon to track them. If anyone finds them, please let us know!
  12. The 80 stands for the aperture: 80mm. ED stands for the type of glass: Extra low dispersion glass. (in short: it makes for a better color in the image) The difference in price comes from the telescope having 1, 2 or 3 lenses. The Esprit is a triplet, I think the KB is a doublet, but I don't know the specs of the latter.
  13. Still being a newbie myself, I can still give you some noob advice: Start out with a modest scope like an ED80 - I started with the Esprit myself and haven't had one second of regret about it - and work your way up as you progress in guiding, combining subs and calibration frames, post-processing,... A good and sturdy mount will last you years to come, scopes can come and go - if you know what I mean IF you can spend the extra buck, I'd strongly suggest looking into an MGEN autoguider. It has a guidecamera in the package and it controls your guiding. No need for a laptop in the field, and man, this thing has been a gamechanger for me. You can guide straight through the finderscope. Any questions, feel free to ask around, it'll save you a bunch of time, money and frustrations - the only things that come free with astrophotography
  14. M13 & M92 first ever sketches

    Impressive first sketches! You have taken very hard objects! As you said, sometimes it's hard to translate to paper exactly what you are seeing, I think you did a great job! You certainly got the fine glow right! If you could draw your stars in with a fine black pen, you'll be able to make them "pop" out more of the nebulousity. My first M13 on paper looked like what I saw, but looking at the sketch afterwards, it looks... weird. Inverting isn't cheating There's lots of things that make your sketch look more alive and still accurate. Inverting a sketch does make it more realistic. Looking forward to your next sketches!
  15. What Advice Do You Have For A Newbie?

    Some things I try to remember myself when making a sketch: I use different sized fineliners to draw the stars. Start with the brightest stars, then work down to the smallest, then draw in the object and AFTER all that, just look at the object's finest details and try to adapt to the dark again. Then draw in the details and the stars missed because of the red light (with a fine pencil) Practice makes perfect!! I started out just copying a moonscape from a picture in a book, or an open cluster,... then I just started placing stars on my observation notes and making field sketches. I now see I have the urge to sketch everything 'too' good, even on my field sketches. Also: get to know your tools: Doodle away! Imagine a galaxy, a comet, a cluster with some nebulousity,... Nothing better than your imagination, it will help you when trying to replicate the real thing! (smudge, feather, erase,..) Both are perfect for the times it is cloudy.. So we all know you'll get plenty of practice time There are people who take time to make a sketch, with notes, and do it all over on a clean piece of paper the next day. As much as I like those sketches, I don't think they are exactly what you see, like you said: you have to resist drawing things that you think must be there. Last but not least: keep at it! you'll get better and even when you think your sketch is bad, keep it! one day you'll revisit and compare, and you'll be glad you can see your progress. Same with bad skies and better skies: nothing more interesting than being able to compare what you can see MORE under a good sky! Sketching has made OBSERVE, rather than WATCH. And it makes me appreciate the hobby even more. Have fun!