Jump to content

SkySurveyBanner.jpg.21855908fce40597655603b6c9af720d.jpg

Trull

Members
  • Posts

    320
  • Joined

  • Last visited

Everything posted by Trull

  1. Trull

    TorcDobIII

    This is my ATM light machine, sporting a 222mm f/7.3 mirror from Norman at Oldham Optical and a spring counterbalance system it gives me great pleasure to look at the sky. There's no wind area so its pretty stable in use, and the truss arm (now arms) is kept in place with a quick release mechanism for easy transport in the car. For the bearings they are etched PTFE onto aluminium or PTFE gliders onto smoothed wood.
  2. Trull

    aurora22jan12

    From the album: Misc

  3. Its hard to count teeth, I suggest using a sharpie marker to tick every tenth. Works for me anyway.
  4. Trull

    vixened103

    Chilly conditions (-11decC) at Aberdeen Astronomical Society's Dark Sky Site
  5. Trull

    vixened103

    From the album: Misc

  6. The International Space Station flying at an altitude of 409km, whilst 785km away from me, passed in-front of the moon. It took 0.63seconds, and I used the burst shutter mode (0.01sec 400iso RAW) on a Canon 20D at prime focus connected to my Vixen ED103swt refractor astride a Vixen GP-DX mount tracking the moon.
  7. Trull

    skalafell6225

    From the album: Misc

  8. Trull

    stackedmoon

    From the album: Misc

  9. Trull

    megamoon19mar11

    From the album: Misc

  10. Trull

    Current Setup for Imaging

    I polar align the GP-DX using the inbuilt scope, its accurate enough and is very quick to complete. Particularly if I use a compass to find north. I'm happy taking 2 minute subs, at ISO1600. Have not noticed any improvement on mirror lockup, so don't bother anymore. Always remember to take darks - about 80 is plenty, and bias frame, although no light frame. Try to capture about 100-120 sub frames which is long enough!
  11. This is what I have and how I use it GP-DX with SS2K-PC connected by RS232 to a Lindy USB converter 42856, onto a 6-way Belkin USB hub then to a 5m USB extension cable. Autoguided via Shoestring Astronomy's adaptor connected to USB hub. I use an off-axis guider with a Imaging Source DFK21AS cam connected to a FW extension cable Canon EOS-350D is connected for pictures/control via USB, and GPUSB for long exposures from Shoestring astronomy. Power comes from a 12V adaptor or internal battery. Dew control keeps the optics clear. All above is connected via USB/FW to my Apple PowerBook G4 and I capture using Nebulosity and guide using PHD.
  12. From the album: Misc

  13. Trull

    pleidefinish

    From the album: Misc

  14. Trull

    m42 orion nebula torc

    From the album: Misc

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.