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laser_jock99

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Everything posted by laser_jock99

  1. Nice concept but probably not cheap.........might even be more than buying a house in a Dark Sky location?
  2. The tripod/pier top/mount does not need to be pefectly level for good PA- the polar axis of the mount just needs to be stable & pointing along the polar axis of the earth.
  3. I suggest as part of their tour they measure they altitude of Polaris at these venues: Newquay lat 50.4155° N John-O-Groats lat 58.6373° N And then try and explain the observation...........
  4. Wow- expensive stuff. The £539 stereo on the front page would set you back £2,500 in todays money. I bet it probably wasn't even that good- Realistic are not really a respected/collectable audiophile brand. Good link though!
  5. Thanks- I'll look into that. Apparently listening to the astronauts on ISS is possible too.
  6. I set up a proper 75 foot longwire antenna now- running down from the chimney to the observatory and rigged up a propper ground wire. Reception is much better now,
  7. Thanks- gives all something to look forward to!
  8. Nice to hear a good dark skies report. Been in Mid Wales since Thursday- between the clouds the views of the Milky Way have been stunning. Not worth setting up the scope but definately worth a quick binocuclar session!
  9. Yes- laziness! I should re-focus between imaging runs. There is always the possibility that focus will shift or the main mirror will tilt after slewing from one target to another. In theory a re-colimation and focus check should happen. In reallity , at the end of a session, this might not happen! Hence metal tube Newts are bit too twitchy for easy use..... Also bear in mind I have posted the full APS-C frame. The corrected area of the coma corrector reducer I used does not cover the full frame.
  10. Your wish is granted! Stack of ten 180 second subs.
  11. Once the collimation is 'close' not difficult at all- maybe 1 minute or so tweaking before each imaging run. The main requirement is a quality collimating laser tool (eg Howie Glatter etc) - this makes the job easier and quicker. Also the F4 GSO Newtonian scopes as shipped will need some modifications to make them more stable for shooting at fast focal ratios (replace mirror collimation springs etc.) For these reasons fast Newts are not recommened for beginners.
  12. The 30 seconds was my 'framing' shot- working on the main imaging run right now. EDIT- For refence each 180s unprocessed subframe looks like ths
  13. Single 30 second shot of the M8 Lagoon Nebula. Not something I'd recomened of course (noisy as anything) but interesting to see how much data you get with a fast scope in a short time on a bright target! imaged with 8" F2.9 GSO Newtonian scope, Canon 40D (full spectrum mod) single 30 second sub @ ISO1000, from dark sky site in Mid Wales. (click for full size image)
  14. M31 Andromeda Galaxy imaged through a thin veil of high cloud. Not recomended- of course- but it's still possible to get a picture of sorts. imaged with 8" F2.9 GSO Newtonian scope, Canon 40D (full spectrum mod) 8x 180s subs @ ISO1000, from dark sky site in Mid Wales.
  15. The Crescent Nebula NGC 6888, Cygnus- imaged with 8" F2.9 GSO Newtonian scope, Canon 40D (full spectrum mod) 3x 180s subs @ ISO1000, from dark sky site in Mid Wales.
  16. IC5146 Cocoon Nebula, Cygnus. Not as well framed as I would have liked, and also a bit short on data (just 2x 180s) but worth a look-in on SGL. IC5146 Cocoon Nebula- using an 8" F2.9 GSO Newtonian scope, Canon 40D (full spectrum mod), 2x 180s subs @ ISO1000, from dark sky site in Mid Wales. (click for larger version)
  17. Well spotted - NGC5070 is mag 13 galaxy in Virgo! Now corrected.
  18. Great result- 34 hours though.........that's more than my imaging time for an entire year!! I should give this a go with one of the 'fast scopes'. I've got an oIII filter somewhere.
  19. Quick image of NGC5070 Pelican Nebula and some of the surrounding nebulosity. Stars a wee bit 'eggy' on this one- but just pleased to be imaging again at the moment! IC 5070 taken with GSO 8" F4 Newtonian telescope working at F2.9 using a 0.7x ASA Keller coma corrector/reducer, modifed Canon 40D full spectrum camera @ ISO1000. Stack of five images totaling 900s of exposure from a dark sky site in Mid Wales. (click image for full size version)
  20. Image of the nebulosity surounding the star Sadr in Cygnus. These were the closinig images of the session as high cloud was starting to move in. Taken with GSO 8" F4 Newtonian telescope working at F2.9 using a 0.7x ASA Keller coma corrector/reducer, modifed Canon 40D full spectrum camera @ ISO1000. Stack of three images totaling 780s exposure from a dark sky site in Mid Wales. (Click image for larger version)
  21. M11 Wild Duck Cluster- not too happy with this one as guiding not good. Worth a look though anyway for the dark nebolosity in the area and the amazingly rich Milky Way in the background! Taken with GSO 8" F4 Newtonian telescope working at F2.9 using a 0.7x ASA Keller coma corrector/reducer, modifed Canon 40D full spectrum camera @ ISO1000. Single 300s exposure from a dark sky site in Mid Wales.
  22. M16 Eagle Nebula taken with GSO 8" F4 Newtonian telescope working at F2.9 using a 0.7x ASA Keller coma corrector/reducer, modifed Canon 40D full spectrum camera @ ISO1000. Stack of five images totaling 25 minutes of exposure from a dark sky site in Mid Wales. Not as tightly focused as I would liked (that's metal tubed Newts for you....) but some of the fainter surounding nebulosity is beginning to show. (click image for full size version)
  23. I'm relying on the outside air cooling the camera, working mainly in the depths of winter. My best 'ambient' so far was -22 deg C back in 2010! More typically just below freezing though.
  24. No- just ambient (quite warm at the time ~12 degrees C)
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