Jump to content
Canterbury Astronomical Society


Popular Content

Showing most liked content since 11/14/2017 in all areas

  1. 3 points
  2. 2 points
    Thanks Simon and Terry I have built a simple mirror magnetometer using a laser diode and a first-surface mirror attached to neodymium magnets about 9 metres distant. Very fiddly to set up and currently only shows By. It has a resolution of about 0.025 degrees so very clearly picks up the regular diurnal cycle in deviation (something I only learned about by playing with this toy). Once I have that reasonably well characterised along with any temperature sensitivity, I hope to be able to subtract it and perhaps more easily reveal disturbances in the solar wind/magnetic field. Obviously it all has to be well away from ferrous metals :) Alas, it's not data-logging (yet) so there's not too many readings 11 pm - 6 am!! best wishes G
  3. 2 points
    Spring/Summer is always busy for us with animals etc so the last months have really been a focus on updating the AP setup. I now have the EdgeHD 11 now and finally got all the Moonlite focuser and stepper motor / controller to allow me to install autofocus options from SGP. The stepper is controlled from a small USB interface that is driven from SGP without much fuss. I managed to aquire a focal reducer for it .. damm that things lumpy!!! I also updated my CGEM, sold to another CAS member, and bought a new CGX mount which I am blown away by, really been a superb purchase. And the new belt drives in the CGX really lovely. The whole mount is even bigger than the CGEM and it's now going on a pier in an obs as I can't totter round the garden with this! I had one mishap with it - during some trials it was living under a cover over a weekend and a NW blew up and relocated my picnic table that I operate from. That lodged itself against the CGX and knocked it over! (lucky with no OTA on!!!) - It bent the CW arm and a saddle knob :( Jamie kindly bent out the CW arm - and in the meantime I asked Celestron for a replacement which was sent FOC to NZ ! Can't complain at that!! Speaking of which the CGX has a Bintel 2 yr RTB warranty and return shipping inc'd - really was a no brainer given the costs from the US for a Losmandy G11 or HDX110. I had one surprise - the CGX is slightly different to the CGEM in that it has no through axis polar alignment which means the Polemaster didn't mount! I bought an extra dovetail for under OTA mounting and an ADM Polemaster adapter - so now the Polemaster mounts on the front of the Edge11. During the winter I decided I wanted to look at new cameras and filters - particularly as I wanted to do some narrowband imaging - sick of moonlit nights I hope NB imaging will help with that to an extent. After some deliberation I bought an ASI1600MM-Cool camera, an EFW8 filter wheel and after a HUGE amount of reading, a set of Astronomik LRGB filters + 6nm Ha / Oiii and Sii filters! So next stop is to get the obs and pier done before winter - first job is to finish a field shelter for the horses and then I can crack on Kind of looking forward to Christmas / NY - hope we might get some less cloud and more sky time - I have some northerly targets I want to try but every night the cloud rolls in off the ocean or I am fogged out!!! I can also get some later nights / early mornings and still survive next day!! Don't know how Gary does it!!!
  4. 2 points
    Thanks Grant for the info, please ask the Gods for clear skies
  5. 2 points
    You can check on these events the following day at http://cams.seti.org/FDL/index-NZ.html (Providing the skies are clear between here and Geraldine).
  6. 1 point
    Despite media reports suggesting a Friday afternoon launch, its very clear nothing will happen until Saturday afternoon at the earliest. Electron will be rolled onto the pad at Launch Complex 1 today for final #StillTesting prep. We're targeting no earlier than 2.30 pm, Saturday 9 December NZDT for a launch attempt. At this stage weather is not looking good for Sunday either, so an attempt could still be pushed to Monday NZDT. Rocket Lab is due to roll its Electron rocket out onto the pad at the company's Māhia Peninsula launch complex, at the start of a 10-day launch window. It will be the second test launch for the 23-metre carbon-fibre Electron rocket, which is capable of carrying a 150kg payload into orbit. The maiden test launch was in May, when an Electron rocket became the first orbital-class launch vehicle to reach space from a private launch facility.
  7. 1 point
    I stepped outside around 22:00 to take a photo of the so-called "supermoon" tonight. It was a bit indistinct, sitting low in the east and with light, gauzy clouds making their way across the face of it. However, given that it was at closest approach (perigee) and a mere 355,548 km (or so) away, I thought I would chance a frame or two (or about 400, in this case - video is a wonderful thing). Photo stuff: 392 frames @ 1/30 sec. each; ISO 100; Canon 6D with Tamron 500mm f/8 catadioptric lens.
  8. 1 point
    Yea it did the same in the city too so I decided against heading out n just peeked at the moon 😊 I will make sure to post in the correct thread in future...thanks
  9. 1 point
    Yes m praying for clear skies now that I can get back to star gazing
  10. 1 point
    And the BBQ is on the 9th...
  11. 1 point
    Interesting - my magnetometer here has shown no such activity. Just regular diurnal variation that is normal for here . No spikes although BZ usually follows BX more closely.. Moot point I guess looking at the weather.
  12. 1 point
    Captured on November 18, 2017, while I was chasing down other objects with the 16" telescope. The building on the right is the Clive Rowe Memorial Dome.
  13. 1 point
    NGC 1316 (right) and 1317 (left) are interacting galaxies that sit approximately 75Mly away in the direction of Fornax. Also known as Fornax A, NGC1316 is one of the strongest radio sources known, and is, itself, the result of an earlier merging of galaxies. To say that these were challenging objects would not do them justice. In order to bring out the distinct gradations in the inner dust lanes and surrounding star clouds, ~6.5 hours of decent data were required, along with some very delicate post-processing. I may come back to these two in the future but, in the meantime, I'm going to take a break and go after something easy and pretty. Or not. Photo stuff: 35 subs @ 300s + 71 subs @ 180s; ISO 1600; Canon 60Da on RCX400 16" f/8.
This leaderboard is set to Auckland/GMT+13:00