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UD4L Cheyenne dropship

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    Male
  • Interests
    ham radio - photography - returning to astronomy after a long spell away - tinkering and making in the workshop.
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    north notts

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  1. my starting point was the tals own instruction manual...some interesting translations in there I can tell you, but I understand the principles. when looking down the focuser the secondary should appear round and be central to the walls of the focuser tube..the primary should be central in the secondary s reflection...check...done all of this and in gradual steps.. but the image seen at high magnification is still a long way off sharp.. using the collimator I have laser spotted the centre of the primary by adjusting the secondary screws..check...then have adjusted the primary via the screws to find the centre of the target on the laser collimator..that's achievable.....how ever...when this is done the reflection of the secondary and the spiders veins are no longer central when looking down the focuser tube...the secondary appears a long way off centre..??? go figure??? this is my dilemma! i have considered the secondary and how its positioned under the focuser...have done very gradual adjustment there...I have also considered the primary and how far advanced up the tube it is towards the secondary...I understand the principle of focal length...but the adjustment screws at the back of the primary are so short that there isnt that much length to adversely affect the focal length of the telescope...or paerhaps this may be the case...?????? Guessing I am tired at this time of night...I will have another crack at it in the morning with a fresh approach............ thankyou for you imput :-) appreciated...as are any of thoughts from contributers :-) David
  2. Oh my...where to begin? looking for advice really. Last year I purchased an inexpensive second hand TAL-1 reflector..purchase online..came via Currier in working condition if a little bit dirty...but no bother.. it worked :-) On odd nights since last December when it arrived I have dragged it out into the back garden and loved every minute pointing it around the skies...its been like a return to younger days. okay..thats the romance out of the way. Last week I decided to give the whole telescope a deep clean..the mirrors were well dusty so I found the resolve to have a crack at cleaning them..looked at astrobabies web site and her tutorial..the job looked within my grasp so I went for it...had the OTA apart..cleaned the mirrors..gave the whole thing light lube and spit and polish...it was all going brilliantly...then I tried putting the thing back together again...went well...went through my notes about collimating..followed them to the letter..............A week later I am still playing around with this Russian nightmare!! why oh why oh why oh why did I start down this road to hell??? While you can get the telescope to within reasonable focus at lower magnification the sharp images at high magnification that I got previously are unattainable.....so today ( monday) I decided to throw money and technology at the blumming thing...yes!! a laser collimator would solve the problem..that's what's missing here!!..so off I toddled to Rothervalley optics purchased a Sky watcher model and brought it home and set about righting my bad deeds with the TAL......4 hours Ive been here faffing around with this monstrosity!!..Ive followed the instructions to the letter...christ..the end result is worse than if you attempt to align it by line of sight!! Tonight Ive just managed to stop short of pulling the whisky bottle out..getting hammered..calling the telescope rude names in the shed before sleeping off my booze induced coma out in the passageway with the dog!! Why oh why is something that should be so easy so ridiculously complicated!!!!!!!!!!!!!!!!!!!! ( now sobbing uncontrolled ) please someone help!...I promise never to do this again! I just want my telescope back to how it was and be able to look at the moon again....I feel it must be something simple that I am over looking...but its gonna have to be pointed out to me...and I am not one for admitting defeat usually...but on this occasion...I AM!!!! Standard Tal-1, not the motor driven version.. made in 1996...it has a 1.25 inch focuser and EP'S..... davsim66@googlemail.com with best regards David p.s have posted this in eastmidlands section as well as that is where I live.
  3. Oh my...where to begin? looking for advice really. Last year I purchased an inexpensive second hand TAL-1 reflector..purchase online..came via Currier in working condition if a little bit dirty...but no bother.. it worked :-) On odd nights since last December when it arrived I have dragged it out into the back garden and loved every minute pointing it around the skies...its been like a return to younger days. okay..thats the romance out of the way. Last week I decided to give the whole telescope a deep clean..the mirrors were well dusty so I found the resolve to have a crack at cleaning them..looked at astrobabies web site and her tutorial..the job looked within my grasp so I went for it...had the OTA apart..cleaned the mirrors..gave the whole thing light lube and spit and polish...it was all going brilliantly...then I tried putting the thing back together again...went well...went through my notes about collimating..followed them to the letter..............A week later I am still playing around with this Russian nightmare!! why oh why oh why oh why did I start down this road to hell??? While you can get the telescope to within reasonable focus at lower magnification the sharp images at high magnification that I got previously are unattainable.....so today ( monday) I decided to throw money and technology at the blumming thing...yes!! a laser collimator would solve the problem..that's what's missing here!!..so off I toddled to Rothervalley optics purchased a Sky watcher model and brought it home and set about righting my bad deeds with the TAL......4 hours Ive been here faffing around with this monstrosity!!..Ive followed the instructions to the letter....the end result is worse than if you attempt to align it by line of sight!! Tonight Ive just managed to stop short of pulling the whisky bottle out..getting hammered..calling the telescope rude names in the shed before sleeping off my booze induced coma out in the passageway with the dog!! Why oh why is something that should be so easy so ridiculously complicated!!!!!!!!!!!!!!!!!!!! ( now sobbing uncontrolled ) please someone help!...I promise never to do this again! I just want my telescope back to how it was and be able to look at the moon again....I feel it must be something simple that I am over looking...but its gonna have to be pointed out to me...and I am not one for admitting defeat usually...but on this occasion...I AM!!!! Standard Tal-1, not the motor driven version.. made in 1996...it has a 1.25 inch focuser and EP'S..... with best regards David
  4. Yes I will have a look nicnak....one thing I did find out..there are only two shipments of tal pet year...there is no confirmed date when next one is...don't know if other stores are in same boat..may be some time before I get the scope I would like....never mind, back to the binoculars....
  5. My first experience at a retailers has been something of a let down..really was disappointed at lack of customer service... Not impressed at all... Will do My shopping online from now on.....
  6. P.S......looks like you have a bit of a TAL fetish going on the andy...... :-)
  7. with out question the 150p looks like an astounding bit of kit...but the scant amount of pictures on the web of objects imaged through it suggest its a viewing scope not a photography scope..which is fine...not talking myself out of it..havent found one picture of the moon taken through a tal..and that cant be that hard.....its design must be a few decades old...but that is also part of the attraction....yep..my head is a mess!! LOL...thanks for the link to the german site...they have some really nice pictures there of the 150p...have seen it before...when you see the range of scopes that TAL make and the number that uk suppliers stock its seems a great pity that more are not readily available..most of the online suppliers will get you a 150p but it appears its a special order...perhaps the margins they make on the russian scopes is not as great as the far eastern ones??.....
  8. One of the reasons why I keep looking at the 200p dob is because of the 1.25" 2" fittings on the focuser..and its ability to take a t-piece for what ever dslr you own..in my case a pentax kx which is k mount...you dont see much video of photographs being taken using the Tal 150p..and the reviews vary..some say that the tals use unconvential fittings for focuser and ep's...others say the the Tal is supplied with an older type pentax screw fit ring for using with older pentax slr cameras...now dont get me wrong...not looking to do deep space photography here...havent got loads of money...as I suggested at the begining of this thread..my main target is the moon...perhaps have a pop at the gas giants...I know there are limits with a DOB or the TAL..its just not knowing what is compatible with the TAL thats the problem.....somewhere on SGL there is supposed to be a TAL reflector/user group...cant find it...any ideas any one?
  9. thanks for the mini review of the tal-150p nick...perhaps you should publish one in the relevent section of this web site???
  10. TAL? DOB? TAL? DOB?....one thing I do know....I have enough computers in my life that I struggle with already with out the inclusion of another one on a telescope! damn you technology!....decided...going to travel to my local emporium tomorrow and get my hands on a few sexy OTA's...feel even greater levels of confusion on the horizon!
  11. Can you tell me nicnak, what has your experience been with the TAL 150p? And what is the scope capable of? Not actually found an in depth review of it on the Internet yet......
  12. He has documented the condition of the OTA so well..showing the scratch on the body...then when asked about the optics he begins to err....show us the scratch man if it isnt that bad!!
  13. To be honest I don't think I will bid Astro B, would probably struggle to get the thing in the car, the guy selling seems to be struggling to describe the scopes lens condition, and deep down I would like a reflector. Still considering, but in no hurry, I like to do as much home work as possible before parting with the lolly....I am going to see what price it commands..200 squids maybe right...If not more. The Tal 150p is still at the top of my list at this time, the legs do un screw from the shaft of the stand, so even as heavy as it is it will be more portable than the dob....the 200p is nice though..head ache :-(
  14. twotter the 100r looks like one big momma!!...had a look at the one on ebay...the size of it dont look all that portable...the pine box must weigh a bit on its own...how are you finding using it? what results you had with it?
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