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Canterbury Astronomical Society


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Showing most liked content since 09/22/2017 in all areas

  1. 4 points
    Orion 8" f/3.9 Newtonian, Canon 700D Full Spectrum, Baader MPCC III, Baader UV/IR Cut Filter: 40 @ 180sec ISO 800
  2. 3 points
    Bloody hell. Rain on the way now then for sure. Glad you waited for the open nights to finish first :D
  3. 3 points
    Is it the plans for the new Deathstar
  4. 2 points
    Santa came early this year ... or will do in the next week or so :)
  5. 2 points
  6. 2 points
    Well I spent the last few days ripping apart my CGEM and rebuilding it using the Hypertune kit from Deep Space Products. I'll do a more in depth review for the newsletter but the basis of the hypertune was extreme stickiness of both axis, so much so that I couldn't balance the mount properly, plus really noisy motors and while the mount was guiding using PHD2 ok, the graphs were not smooth which suggested further sticking was occuring. I think it even has a word .. stiction! The Hypertune service that DSP offer is great if you live in the USA but for us kiwi's its better to buy the kit and DIY rather than ship the mount to Arizona! I will say this though.... don't try this unless your really comfortable with mechanics! By that I mean able to use hand tools (and have a good set) , work with bearings, understand how to properly remove stuck bolts, how to disassemble something quite complex and re-assemble it, working how where things need tweaked etc and unless your really struggling it's not going to turn your CGEM into an Astro Physics mount! ... Just in case you were hoping!! The kit comes with the tools needed inc some specialised bearing removal tools, new ceramic and teflon bearing kits, lubricants/polish and 2 amazingly good DVD's that show Ed (DSP owner) breaking down a mount bolt by bolt, cleaning, and reassembling the mount and then resetting motor mesh and backlash. Plus downloads of mount break downs, calc sheets for working out the clearances of bearings and loads of tips and tricks to fix up the CGEM and improve it tills its way better than new. The kit isn't the cheapest but the DVD's are a gold mine if you ever have to take apart your mount - I think I could happily take apart any CGEM now and know how it goes together! The hypertune process is a little laborious inc some hours of sanding and re polishing the ring gears, which you get over quite quickly! And it took me 3 attempts to get the polishing and clearances right to get the mount smoothness I wanted. But now the two axis are buttery smooth and so free so they balance really easy. I'm sure with a bench buffer and some time I could have improved it further and I may revisit it in the future now I have the DVDs and know how to disassemble it. Next step is to do some PHD2 tests, redo the PEC and then do some test images. So far so good and given how free the axis are now I can't see too much of an issue. I'll post some more words for the newsletter :) Cheers Simon
  7. 2 points
    The problem is that between Simon's new toy and others I think that he may have plans on, and our delivery of eyepieces, cameras and such, we should be grateful if we're gonna see the stars this year.
  8. 2 points
    Option is now in place to compare this year's CAMS data with those of previous years. When you click on "Past Data", a new window tab appears showing the CAMS data obtained in past years. By picking the same date and going back and forth between the windows, you can bring out new meteor outbursts: Global meteor shower activity: LOCAMS network
  9. 2 points
    well. that is a good pic; at least everyone will see what it's like!
  10. 1 point
    Where Can I See the Orionids? It's called Orionids because the meteors seem to emerge or radiate from the constellation Orion. A First Quarter Moon will make this meteor shower easy to see in both the Northern and Southern Hemisphere. While you can easily see a shooting star looking straight up, the table below shows the exact direction of the Orionids from your location.
  11. 1 point
    Last night (18th Oct) was a good night with over 50 meteors detected by the Canterbury setup. We are now fully automated, so you can see our detections by going to http://cams.seti.org/FDL/index-NZ.html
  12. 1 point
    There may be more ringed objects in the outer solar system than anyone knew. This week, researchers revealed that the egg-shaped dwarf planet Haumea - one of four known diminutive planets that circle the sun from beyond the orbit of Neptune - is surrounded by a ring of material roughly 43 miles in width. Although rings are well-known around Saturn (obviously) as well as Jupiter, Neptune and Uranus, the new discovery represents the third time in just the last few years that scientists have found a ring around a solar system object that is not a planet. https://i.stuff.co.nz/science/98029240/beyond-the-orbit-of-neptune-a-dwarf-planet-is-found-to-have-a-ring
  13. 1 point
    woohoo cant wait to see it i have a 100mm acro refractor on a home made tracking mount Hope to get a glimpse of uranus tonight after tha cas meetign Ifs ever clear
  14. 1 point
    Being a northerly constellation, Andromeda is, at best, only visible for a few hours each night. From the South Island, the most northerly parts of the constellation do not rise above the horizon. Alpheratz, α And, is about 24° above the horizon at its highest as seen from Auckland. From the extreme south of New Zealand its maximum height is 14°. Most of the rest of the constellation is lower. In terms of time the galaxy is above the horizon for about 4 hours 40 minutes from Christchurch. Thus there is only a fairly brief window of opportunity to see the galaxy during the night. For New Zealand, it is due north, and highest, at about 10:30 pm (NZDT) in mid November, an hour later at the beginning of the month and an hour earlier by the end of the month. By the latter date it will be running into evening twilight. For each month before November, the galaxy will be at its highest two hours later. This means it is visible from New Zealand during the hours of darkness from about the beginning of July to the end of November.
  15. 1 point


    I attended Sze-leung's talk yesterday morning and it was fantastic! It was very informative as to what sort of outdoor lighting our district councils should be using among other things. I was unable to listen to Kevin's talk as I had to go and help set up at the observatory ready for the public viewing but I heard a lot of people talking about it and I was so glad we were hosting him and Sze-leung this Tuesday.
  16. 1 point
    Almanac 2018 is both a Solar and Lunar calendar. Each monthly grid includes the phases of the Moon, the rise and set times of the Sun and Moon, planetary phenomena, meteor activity, solstices and equinoxes, public and school holidays, religious festivals, historical astronomical events, a Maori calendar and ancient star lore pertaining to each month. The planet rise and set is back by popular demand. The Almanac contains dozens of spectacular full colour images of celestial objects It also includes full colour charts of the Night Sky through the seasons. An information page explains how to use the Almanac and charts. The Almanac is produced for the Phoenix Astronomical Society by Richard Hall, Kay Leather, and Charlotte Hird. You can purchase copies directly at http://www.stonehenge-aotearoa.co.nz/shop-online.html
  17. 1 point
    SOLD .... not to a CAS member sadly
  18. 1 point
  19. 1 point
    still for sale - I'd take 850 :)
  20. 1 point
    What about unguided? Have you measured the before and after peak-to-peak?
  21. 1 point
    feeling pleased - the mounts doing well after hypertuning so much easier to balance .. much quieter and no huge excursions in tracking job done!!!
  22. 1 point


    I like the way the pages are all set out, great illustrations. Easy to follow, with upcoming events. Well done Webmaster, and thank you.
  23. 1 point
    in the CAS dome? I would suggest our eq8.
  24. 1 point
    I have a Skywatcher 100mm Esprit here, and a AZEQ6 mount, although I had to send the mount back as it had factory damage....buhumbug So can't use it yet......frustrated Got a ZWOASI1600MM with filter kit (Kit C) for more wide field and a ASI290MM plus the ASI290MC for smaller objects and tracking. Whilst I've been waiting I just built a Night Vision rig with a P8079HP tube, fitted with the ZWO290MM camera Still testing and setting this up for near field object spotting. Here is my first two attempts, the 15 min video is interesting. My videos on new tube link below. Smokey Joe Based in Lincoln
  25. 1 point
    You can listen on YouTube save you opening it. Voyager Golden Record - Wikipedia
  26. 1 point
    It is the disk that was attached to Voyager. Pretty clever of them to retrieve it for you :)
  27. 1 point
  28. 1 point
    Hi Everyone, I've got the scope all back together now, and here are some photos... The scope has detachable wheels/handles for easy movement, and breaks down into top and bottom sections plus poles. The wood is well sealed marine ply, and is very solid. I don't have the "push to" electronic running again yet, but am happy to give it a go if anyone is interested. The coming week is going to be a bit busy, but if anyone wants to have a look at it next weekend I should be around and am more than happy if you want to get in touch to arrange something. If there's no interest by the end of next weekend it'll go on TradeMe. Cheers, Rod
  29. 1 point
    It tells you on the side :D
  30. 1 point
    Shoot thats a big photo lol. Let me try again
  31. 1 point
    Hi Fellow Astronomers, there is an interesting article in the latest issue of New Scientist (16 September 217, no. 3143): "After Cassini" pages 29-43 Regards, Malcolm Carr.
  32. 1 point
    Osiris-Rex is not a dinosaur! It's a space probe on a mission to the asteroid Bennu. After a year in deep space it flies by earth tonight for a gravity assist to put it on course for a Bennu encounter next year. If you're up early tomorrow morning you may be able to catch it whiz past! It will be roughly magnitude 10 at closest approach and will be moving at almost 2 degrees per minute! NASA want you to take a photo of it: FAQ: Spot the Spacecraft - OSIRIS-REx Mission http://asteroidmission.org//wp-content/uploads/2017/09/OSIRISREx-EGA-Observation-Instructions.pdf Spot the Spacecraft - OSIRIS-REx Mission A DSLR with a reasonable zoom may well catch it, without a tracking mount. Maybe even a stock 18-55 at 55mm. Visually a 4" telescope may catch it if you have a dark sky. Use the lowest power, about 1 degree field or more. You can use JPL's Horizons website to locate Osiris Rex (OSR) from your location HORIZONS Web-Interface To make it easier I've created a chart based on West Melton for the closest approach around 4:41am when its brightest. Find the star and wait for the spacecraft. It could easily be half a degree away or more. It's also worth noting that it passes NGC55 at 3:36am, and Iota Sculptoris at 3:06am around magnitude 11-12.
  33. 0 points
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