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Canterbury Astronomical Society


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Showing most liked content since 03/23/2018 in all areas

  1. 4 points
    Nice video on spaceweather today of fast moving aurora taken by Oliver Wright.
  2. 3 points
    RCW 58 sits in Carina, ~13,000 ly away. Like many other annular type of nebula, research has suggested that RCW 58 is formed from stellar ejecta "blown" open by wind from a hot star. In this case, the star is an energetic Wolf-Rayet type (WR 40) that is easily visible in the center of the HII ring. Photo stuff: 52 frames @ 180s ea. ISO 1600 Canon 60Da on the RCX400 16" f/8; with .67 focal reducer and H-alpha filter
  3. 3 points
    The Carina Nebula, where the South Pillars region exists, has an incredible array of fascinating objects and processes. In this image, for instance, we see pillars - also known colloquially as "elephant trunks" - of dust in which stars are being born. The best example in this photo is in the lower left quadrant. Recent research (McLeod et al., 2016) has suggested that such pillars are likely to disappear once the star comes into being due to a process known as photoevaporation, in which the powerful stellar wind from the new star literally blows away its cocoon. Photo stuff: 20 frames @ 180s ea. ISO 800 Canon 60Da on the RCX400 16" f/8; 0.67 focal reducer
  4. 2 points
    Hi, Nice night from home. limiting mag from here around 4.8. An old favorite ngc 4945. 12inch meade at f10. no filters 86 x 30sec. unguided. Atik4000. Original is nearly to mag 20
  5. 2 points
    Orion 8" f/3.9 Newtonian, Canon 700D Full Spectrum, Baader MPCC III, Baader UV/IR Cut Filter: 20 @ 180sec ISO 800 , 20 @ 180sec ISO1600 A better target for a scope with a wider field of view. I was just testing my new Moonlite focuser and sequence generator pro.
  6. 2 points
    Taken using an 8 inch Dob and a basic ASI120MC camera. No tracking, No barlow. They may not be as good as Simon's awesome image of Jupiter, but they do show what can be done with basic gear. Saturn and Mars were about 35 degrees above the horizon, early morning, and Jupiter was very high. Seeing was moderate. Good enough to visually see glimpses of fine detail on Jupiter at 180x, but mostly a bit fuzzy and wobbly. All images are the same scale. Mars is still quite small and far away. Only 8.2 arc seconds across. It will get 3 times bigger over the next few months as earth gets closer. At it's closest on 1st August, it will be almost 2/3 the size of Jupiter and 50% bigger than Saturn (the planet, not the rings). Even at this distance, dark markings can be seen on the surface, and the night side can be seen on the edge, showing a gibbous phase. This year Mars will be the closest since 2003, and it wont get this close again until 2035. Earth passes Mars roughly every 2 years and 2 months, as we catch up with the slower moving Mars, but because the orbits are not perfect circles sometimes the pass is closer than other times. It will be awesome in any telescope this July/August! The images are a stack of the best 100 or so frames from 500. Stacked using Autostakert, captured using Sharpcap, and sharpened using Registax. A Bahtinov mask was used for focusing. Since the dob does not track I only got about 500 frames before the planet drifted out of the frame. Without a Barlow, the images were captured at f/6, so there was plenty of light, and not much noise. Sensitivity was 11% for Jupiter and Mars, and 24% for Saturn. Exposure time was about 5ms for Jupiter and Mars, and 27ms for Saturn. Saturn is much dimmer. A barlow would make aiming quite difficult, and would only allow about 200 frames. Since a barlow dims the image, I would use longer exposures for Jupiter and Mars, but I would need more sensitivity for Saturn, so more noise and more frames would be needed, so multiple runs. Without tracking objects move about 1 arc second every 66ms, and that starts to become noticeable. Also the wobbling atmosphere moves the image in this time, blurring the image more.
  7. 2 points
    Spent last night chasing Jupiter as its bright and higher in the skies now by mid evening. I captured some video and stacked it when it was about 30 deg above the eastern horizon and it looked not bad But I returned outside at 2am .. (yes 2am!) and it was insanely bright and crisp - there was no wind and no cloud but a bright moon yet Jupiter was shining out bright so I captured some more video which I stacked this morning. I did get up again at 0500 to see if I could get a run on saturn but there was a lot of high cloud and some mist around and seeing wasn't so great. This is def one for binoculars and small scopes as you can really see it very clear just now and its only going to get better. Really is going to be a great season :)
  8. 2 points
    Hi All, in "The Guardian Weekly" of 23-29 March 2018, there is an interesting article about the late Stephen Hawking on page 8, and a three page obituary on pages 33-35, regards, Malcolm.
  9. 1 point
    This image pairs a couple of colourful groupings in the Large Magellanic Cloud. On the left is the bright Dragon Head Nebula (NGC 2035), which is situated in the center of the much larger N59 gas complex. The two objects on the left are the reflection nebula NGC 2020 (blue) and the emission nebula NGC 2014 (red). In astronomical scales, all these objects similar distances away; about 160 kly).
  10. 1 point
  11. 1 point


    Hi, I would like to attend also as I'm looking at becoming a member. Thanks, Robert
  12. 1 point
    After a successful first astronomy course at the Heathcote Valley Community Centre last term, I can announce a second course entitled “Exploring the Solar System”. It is a seven week 2-hour course on Thursday nights (7 – 9 pm) starting 10 May 2018. This is NOT a CAS event, but it will be of interest to CAS members (thinking especially of new CAS members) who want to get up-to-date about all the exciting objects in our Solar System and hear about the latest space missions. Regular course cost is $105 but CAS members will pay $70. My teaching is not commercial but I do need to recover some of the direct costs. The course will be posted sometime soon on the HVCC website, but while it already is short notice, just email me at ngawheturesources@gmail.com when interested. Find out more about my vision, motivation and course content on http://ngawhetu.nz. Cheers.
  13. 1 point
    Here is the link to the course description: https://hvcc.org.nz/2018/04/11/astronomy-2/
  14. 1 point
    Hello all - Luc has asked me to post his message about new versions of DeepSkyStacker - specifically there is now a 64 bit version Quote The installers can be found here: 64 bit version - https://github.com/L...64Installer.exe 32 bit version - https://github.com/L...erInstaller.exe 64 bit version as a ZIP file - https://github.com/L...64Installer.zip 32 bit version as a ZIP file - https://github.com/L...erInstaller.zip (The ZIP versions are provided if your web browser blocks exe file downloads) I (Tonk) will pick up any issues reported here - but Luc would prefer (if possible) for bugs to be reported on the DeepSkyStacker yahoo group - or if not possible you can also use the GitHub issues page found here - https://github.com/L...fier/DSS/issues Regards Tonk pp Luc Coiffier
  15. 1 point


    Thanks Simon. That sounds good, I’ll come along and lend a hand. Kind regards, Lara
  16. 1 point
    Great pic, glad that after the chase you caught it. Well rewarded. Thanks for sharing. I shall be looking out for it from now on.
  17. 1 point
    Taken on a Celestron Edge 11 - CGX mount and ASI224MC camera - 5000 frames stacked in Autostakkert. Image taken at 0200, Greendale, Darfield.
  18. 1 point


    ...not on April 2nd. Last night moved to following Monday.
  19. 1 point
    Binos map for Nova Carina 2018
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