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laser_jock99

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Everything posted by laser_jock99

  1. Pretty much what I pedicted a few years back...."Hey these are cheaper to run- lets have more of them!!"
  2. I sometimes wish my astro cameras had tilt screens.......
  3. Very interesting stuff. Beyond the range of us amatuers though!
  4. Nice image- but the background sky still looks a bit 'clipped' and black to me (and blue in the first image). I try a go for a neutral dark bluish grey for the back ground sky- never black. Monitors vary of course- what looks okay on one screen can appear terrible on another! As you said different software also seems to render different colours too. But I've tried to illustrate what I mean in this re-process.
  5. Remove the IR filter and just use your 100D for astro. Buy another (newer) camera for daylight work! If you're shooting with an all mirror scope (eg Newtonian) you won't need to install an IR/UV blocker filter either.
  6. If you've got mains then a battery pack adaptor is a must. Nothing worse than leaving a camera on an imaging run only to come back later and find later it ran out of power after 3 subs!!
  7. Bit cloudy here (Warks) but still the odd gap. Work tomorrow so no observing right night now. Possible clear nights at the weekend.......?
  8. Under perfect conditions you should be able to see an Airy Disk https://en.wikipedia.org/wiki/Airy_disk Atmospheric turbulance and tube air currents in the scope will disturb the 'prefect' Airy Disk pattern. But with good optics, and undisturbed conditions it should appear round at least. A good test for your optics.
  9. True enough! My most memorable experience was a night crossing on a yacht from the Scilly Isles to Brittany. At midnight we were about halfway across and 60 miles from any land. On a clear, moonless August night the view of the Milky Way was impressive to say the least. With the nav lights turned off and not much else for miles around the best of the display was the bioluminescence in the wake of boat. Magical experience. I've also seen similar bioluminescence combined with stellar views from the beaches of south Devon- if you can get far away enough from light pollution. EDIT- wonderfull memories also of the views through my Tasco 60mm scope- a younger me with my Tasco scope & cat
  10. A star is a 'point source' - ie infinitesimally small and far away. You're never going to see sunspots on another star! Try a planet and you might see some detail.
  11. Nice hole- I struggled to make one at all...... I belive my foundations and pier are pretty stable though!
  12. Some great scopes and rigs posted so far. Here's my Altair Astro Starwave ED80 atop a GSO 6" F4 Newtonian.
  13. Good fall of snow- very rarely that deep in the UK.
  14. Not sure I understand your problem. The normal 'cure' to extend the point of focus outwards beyond the current travel of the focusser is to move the primary mirror closer to the secondary (i.e. shorten the the tube).
  15. I don't recall having this issue- although I use mainly the Baader MkIII Coma Corrector which is a much shorter device than the aplanatic CC. You could always move the primary up the tube say 10mm by taking a slice off the bottom end!
  16. The long dovetail is pretty much a must have. You'll also notice in my photo a short ED80 refractor top mounted on the Newt. The extra mass can be used to offset the weight of the camera somewhat. Balance never needs to be perferct though- a slight load is better for tracking stabilty I understand.
  17. I have large area roll off roof (3m x 3m) and also live in the mountains! A cubic meter of freshly fallen snow weighs around 160kg. So 0.3m x 3m x 3m x 160kg = 420kg hence why I have a removable central support in the winter. So far we only had one deep snow fall of 25cm in the begining of December.
  18. Wouldn't dream of lifting my 30kg 12" Newt manually onto it's pier (over my head height). Yet I can easily mount it on my own- I simply put a pulley system into the obsy rafters. You can see the pulley ropes on the wall behind me and the lifting sling around 'The Beast' scope in this image
  19. The 0.7x ASA Keller Coma Corrector/Reducer is the route I went. The collimation will need to be spot on at F2.9 (the metal tubes can be 'twitchy'- hence the carbon fibre tubes of TS and Boren Simon versions). The corrector itself is very expensive- but on the plus side I can use it on any of my five Newtonian scopes. You might also consider the Takahashi Epsilon 130 which has 430mm FL at F3.3 https://www.takahashiuk.co.uk/Reflecting-Telescopes/Epsilon/175-/Takahashi-Epsilon-130ED-Reflector Makes the ASA Keller option look cheap though!!
  20. Thats pretty extreme! I have a wooden prop holding up the middle of the inside of my observatory. I don't want the rolling roof to collapse under the weight of a sudden dump of snow while I'm not there. The most we had since I've been there is 0.3m overnight- could be enough weight to collapse the roof if not centrally supported?
  21. Think I had about six wheels each side 0.5m appart. The short answer though is more wheels are better (within reason) to spread the loading (my roof is a heavy duty construction).
  22. Can't check the outward travel of the focusing tube right now as the scope is 100 miles away at the moment (although I hope to finally get there tomorow (snow....)). I did mod the mirror cell of this scope to move the primary 10mm further up the tube (but I have done this to all my Newts as a matter or routine anyway (I don't think the scope manufacturers allow for stuff like OAGs and a coma corrector at the same time!!). But otherwise I have experienced no problems with rear focus.
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