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Knighty2112

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Everything posted by Knighty2112

  1. Knighty2112
    Just done some testing on my stock focuser using my 2" dielectric diagonal and combinations of EP's with and without my Omni 1.25" 2x Barlow. The average distance using a calipher to measure the distance from the tube of the focuser is around 20 to 22mm (measured to the inside points on the focuser) with my EP's and also with my 2x Barlow too. The shortest distance I get is when I use my 2x Barlow with a stock Skywatcher 20mm EP (which I rarely ever use at all), and with that combo I get a distance of just over 19mm outward travel required. I'm hoping that this minimum 19mm setting is big enough to cope with the extra length of the focuser so it will allow me to still be able to achieve focus still when using my 2" diagonal with my 2x Barlow and EP's. Of course I won't fully know if this is the case until I actually get the new focuser itself. Fingers crossed! Note; the image below shows just my 2" EP in the 2" diagonal, and not the 2x Barlow and 20mm EP which has the shortest outward travel of all my EP's with the 2x Barlow to achieve focus.
  2. Knighty2112
    Thanks Dave. I gues at a push if one wanted too then trimming an inch off the actual tube of the scope would overcome this if required. I'll see if my Omni 2x Barlow when attached into my 2" dielectric diagonal suffers the same issue when I get my focuser. I may just be able to squeeze it in this month after all, but need to do the number crunching still before I know for sure. Thanks for the pics.
  3. Knighty2112
    Dave, is the focuser longer than the stock focuser fitted? Looking at it it doesn't seem longer, but might be a little hard to know for sure unless measured?
  4. Knighty2112
    Sadly, an emergency has cropped up so will have to hold off getting my new focuser until May now!
  5. Knighty2112
    Looks nice. A little worried about the Barlow. I have a Celestron Omni 2x Barlow, and it would be a shame not to be able to use it with my 2" dielectric diagonal. Not a deal breaker, but something to consider at least. Thanks for the feed back.
  6. Knighty2112
    HI DRT. Ive heard people rave about the Telrad, but to be honest i prefer a little magnifiction when I use my finderscope, so most likely will never use a Telrad or Orion.
  7. Knighty2112
    Hi Dave. Not got one yet. I'm hoping if funds allow after I get paid to get it at the end of this month. If not it will be in May when I get it. All people who have responded have great things to say over it, so it should be a great upgrade to the scope & make focusing much smoother & easier.
  8. Knighty2112
    Thanks Dave. Just got to save up the money now!
  9. Knighty2112
    Thanks John. I know I'll need to do a little DIY to my scope to refit the finder scope. Just need to have a steady hand when I drill some holes to fit a new synta shoe.
  10. Knighty2112
    Thanks for the feedback. Cheers!
  11. Knighty2112
    No, it stays in focus OK once focus is achieved. I did tighten the rack up a little when I fitted the focuser motor, and I lock of the focus when I do achieve it too. I just find it a little tricky to get sharp focus well without having to jab the buttons on the focuser a few times.
  12. Knighty2112
    Hi all, for my next upgrade on my Skywatcher Startravel 120mm refractor I'm thinking of upgrading the focuser to a dual speed 2" Crayford focuser http://www.firstlightoptics.com/skywatcher-focusers/sky-watcher-dual-speed-2-crayford-focuser-for-sky-watcher-refractors.html A couple of questions though before I possibly fork out for one in the next month or so; 1) Does it need any other adapter ring or anything to fit OK into the existing place where the stock focuser sits on the ST120? It is just a straight swap right? 2) Does the two speed focuser action significantly improve the action to get a sharper focus much better and easier? I currently have a Skywatcher Auto focuser fitted to the stock focuser on the scope, but find the constant small jabs back and forth you have to do on the keypad a little annoying to get good focus, and hope the finer focusing option on the Crayford focuser might be easier to achieve by hand again if fitted to the scope. Regards, Gus
  13. Knighty2112

    Great. Make sure I have the day off work to view this, and hope by June time we get some nice clear weather.
  14. Knighty2112
    I got the Skywatcher 6 X 30 right angled finderscope for my new ST120 refractor scope, and for just over £31 was very surprised at how good the stars looked through it ( i.e normal), and could easily make out M31 with it too in my light polluted, street lamp infested back garden. Only thing I made a mistake with was I ordered the wrong one up by mistake. I got the east is west, west is east version, and not the correctly orientated view. But I can live with that quite easily. Dead easy to calibrate it to the scope to with one spring loaded screw, so you only have to twiddle two screws to achieve correct alignment.
  15. Knighty2112
    Most likely an incorrectly set secondary mirror. I have the same scope, and tried to set my secondary mirror as suggested in Norton and other astronomy books, and also from articles and videos on the Internet. After getting my secondary mirror as close as central in my viewfinder as I possibly could, I then found that my scope would no longer focus correctly. Distant objects were not able to achieve correct focus. I quickly put my secondary mirror back in the position it was originally (as best as I could remember) and all was well again.
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