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#1
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The following strange thing occurs with my Tasco 60/700mm: It came
originally with a crappy diagonal and two EP's. If I use the diagonal, the EP's focus correctly, namely the rack and pinion can accomodate the EP's ONLY in the presence of the diagonal. If I try to focus without the diagonal, the rack and pinion comes out short for the two EP's which are 12.5 and 6mm. One month ago I ordered two new 1.25" EP's, 25mm and 6mm along with a Baader 0.965"to 1.25" converter, but I had no way to check if the extra space provided by the Baader will give enough slack for the rack and pinion to accomodate the new EP's. Does anyone have a guess on whether this is so? I am asking so that I can start looking for alternatives, like tube extenders, before the EP's arrive. Thanks much in advance, -- Ioannis Galidakis http://users.forthnet.gr/ath/jgal/ ------------------------------------------ Eventually, _everything_ is understandable |
#2
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Does anyone have a guess on whether this is so? I am asking so that I can
start looking for alternatives, like tube extenders, before the EP's arrive. Sorry I cannot help you on this, only suggest that you consider a hybrid diagonal which will fit the 0.965inch focus but uses 1.25 inch eyepieces. Observing though a refractor without a diagonal can be quite awkward, especially towards the zenith where the best views are normally found. jon |
#3
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Does anyone have a guess on whether this is so? I am asking so that I can
start looking for alternatives, like tube extenders, before the EP's arrive. Sorry I cannot help you on this, only suggest that you consider a hybrid diagonal which will fit the 0.965inch focus but uses 1.25 inch eyepieces. Observing though a refractor without a diagonal can be quite awkward, especially towards the zenith where the best views are normally found. jon |
#4
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![]() "Ioannis" wrote in message ... The following strange thing occurs with my Tasco 60/700mm: It came originally with a crappy diagonal and two EP's. If I use the diagonal, the EP's focus correctly, namely the rack and pinion can accomodate the EP's ONLY in the presence of the diagonal. If I try to focus without the diagonal, the rack and pinion comes out short for the two EP's which are 12.5 and 6mm. One month ago I ordered two new 1.25" EP's, 25mm and 6mm along with a Baader 0.965"to 1.25" converter, but I had no way to check if the extra space provided by the Baader will give enough slack for the rack and pinion to accomodate the new EP's. Does anyone have a guess on whether this is so? I am asking so that I can start looking for alternatives, like tube extenders, before the EP's arrive. Thanks much in advance, -- Ioannis Galidakis http://users.forthnet.gr/ath/jgal/ ------------------------------------------ Eventually, _everything_ is understandable Here's my experience with a crappy Bushnell 60mm/ 600mm FL . I bought a .965 to 1.25 hybrid diagonal and some 1.25 EP's , I did not have enough _infocus_ , so I had to cut off 30mm of the OTA with a dremel tool . It worked fine after that :-) ..... then rebuilding the tripod ........ -- Craig Montreal, Quebec Canada 45.29 N 73.41W |
#5
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![]() "Ioannis" wrote in message ... The following strange thing occurs with my Tasco 60/700mm: It came originally with a crappy diagonal and two EP's. If I use the diagonal, the EP's focus correctly, namely the rack and pinion can accomodate the EP's ONLY in the presence of the diagonal. If I try to focus without the diagonal, the rack and pinion comes out short for the two EP's which are 12.5 and 6mm. One month ago I ordered two new 1.25" EP's, 25mm and 6mm along with a Baader 0.965"to 1.25" converter, but I had no way to check if the extra space provided by the Baader will give enough slack for the rack and pinion to accomodate the new EP's. Does anyone have a guess on whether this is so? I am asking so that I can start looking for alternatives, like tube extenders, before the EP's arrive. Thanks much in advance, -- Ioannis Galidakis http://users.forthnet.gr/ath/jgal/ ------------------------------------------ Eventually, _everything_ is understandable Here's my experience with a crappy Bushnell 60mm/ 600mm FL . I bought a .965 to 1.25 hybrid diagonal and some 1.25 EP's , I did not have enough _infocus_ , so I had to cut off 30mm of the OTA with a dremel tool . It worked fine after that :-) ..... then rebuilding the tripod ........ -- Craig Montreal, Quebec Canada 45.29 N 73.41W |
#6
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On Tue, 23 Dec 2003 22:46:22 +0200, "Ioannis" wrote:
The following strange thing occurs with my Tasco 60/700mm: It came originally with a crappy diagonal and two EP's. If I use the diagonal, the EP's focus correctly, namely the rack and pinion can accomodate the EP's ONLY in the presence of the diagonal. If I try to focus without the diagonal, the rack and pinion comes out short for the two EP's which are 12.5 and 6mm. One month ago I ordered two new 1.25" EP's, 25mm and 6mm along with a Baader 0.965"to 1.25" converter, but I had no way to check if the extra space provided by the Baader will give enough slack for the rack and pinion to accomodate the new EP's. Does anyone have a guess on whether this is so? I am asking so that I can start looking for alternatives, like tube extenders, before the EP's arrive. Thanks much in advance, Shouldn't make that much difference. I'm using an Orion hybrid diagonal (1.25"-.965") on a Meade 220 which had the smaller diagonal as "standard". The only problem you might run into is with eye pieces that have the focal point far up inside the eye piece themselves. These do require more "in focus" than usual, and sometimes you can run into a bit of trouble getting these to focus "in" far enough to reach infinity. I'm assuming here that the Baader .965" to 1.25" is a diagonal, not just a "converter" that allows the use of 1.25" eyepieces in a .965 diagonal. These most likely won't work unless you have a lot of "in focus" built into your telescope. Jerome Bigge Member, Muskegon Astronomical Society Author of the "Warlady" & "Wartime" series. Download at "http://members.tripod.com/~jbigge" |
#7
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On Tue, 23 Dec 2003 22:46:22 +0200, "Ioannis" wrote:
The following strange thing occurs with my Tasco 60/700mm: It came originally with a crappy diagonal and two EP's. If I use the diagonal, the EP's focus correctly, namely the rack and pinion can accomodate the EP's ONLY in the presence of the diagonal. If I try to focus without the diagonal, the rack and pinion comes out short for the two EP's which are 12.5 and 6mm. One month ago I ordered two new 1.25" EP's, 25mm and 6mm along with a Baader 0.965"to 1.25" converter, but I had no way to check if the extra space provided by the Baader will give enough slack for the rack and pinion to accomodate the new EP's. Does anyone have a guess on whether this is so? I am asking so that I can start looking for alternatives, like tube extenders, before the EP's arrive. Thanks much in advance, Shouldn't make that much difference. I'm using an Orion hybrid diagonal (1.25"-.965") on a Meade 220 which had the smaller diagonal as "standard". The only problem you might run into is with eye pieces that have the focal point far up inside the eye piece themselves. These do require more "in focus" than usual, and sometimes you can run into a bit of trouble getting these to focus "in" far enough to reach infinity. I'm assuming here that the Baader .965" to 1.25" is a diagonal, not just a "converter" that allows the use of 1.25" eyepieces in a .965 diagonal. These most likely won't work unless you have a lot of "in focus" built into your telescope. Jerome Bigge Member, Muskegon Astronomical Society Author of the "Warlady" & "Wartime" series. Download at "http://members.tripod.com/~jbigge" |
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