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Review of TMB optical Monocentric eyepieces
Hello Group ,
In the August issue of Sky and Telescope Mr Gary Seronik does a review of the TMB Optical monocentric eyepiece and in my reading of it comes to the conclusion that there is very little difference (or none)in contrast and light scatter between the mono. and two well known Plossls and a symmetrical . Three high quality eyepieces to be sure but I would have thought more of a difference would be seen between them and the mono. Mr Seronik did what appears to be a very complete review . It comes as no surprise that in an F4.5 newtonian off-axis performance was less than excellent with the mono. What do you all think about this review after such glowing reviews from other people over the last few months ? Leonard |
#3
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Review of TMB optical Monocentric eyepieces
On 24 Jun 2004 16:15:28 -0700, (Leonard) wrote:
mention of GS review of TMB SuperMono EPs snipped What do you all think about this review after such glowing reviews from other people over the last few months ? I hope this isn't just a troll, but here goes - From my personal experience, the review contains nore than a bit of hogwash. I've compared SuperMonos to Pentax SMC orthos, Tak orthos, and Televue Plössls of similar focal lengths, in my 10" SCT, a 90mm F11 refractor, and a 12˝" F8 Newt (of exceptional quality), and the Monos won in every category except FOV. Note that I have not tried the Monos in short FL instruments, so I've no opinion in this area. Wayne Hoffman 33° 49" 17' N 117° 56" 41' W "Don't Look Down" http://users.adelphia.net/~w6wlr/ |
#4
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Review of TMB optical Monocentric eyepieces
"Leonard" wrote in message m... Hello Group , In the August issue of Sky and Telescope Mr Gary Seronik does a review of the TMB Optical monocentric eyepiece and in my reading of it comes to the conclusion that there is very little difference (or none)in contrast and light scatter between the mono. and two well known Plossls and a symmetrical . Three high quality eyepieces to be sure but I would have thought more of a difference would be seen between them and the mono. Mr Seronik did what appears to be a very complete review . It comes as no surprise that in an F4.5 newtonian off-axis performance was less than excellent with the mono. What do you all think about this review after such glowing reviews from other people over the last few months ? Leonard Personally, I think the phrase "your mileage may vary" was erroneously left out of the review. I guess that's why there are so many different ocular designs out there and each has their loyal following. g Best regards, Bill |
#5
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Review of TMB optical Monocentric eyepieces
"Leonard" wrote in message m... Hello Group , In the August issue of Sky and Telescope Mr Gary Seronik does a review of the TMB Optical monocentric eyepiece and in my reading of it comes to the conclusion that there is very little difference (or none)in contrast and light scatter between the mono. and two well known Plossls and a symmetrical . Three high quality eyepieces to be sure but I would have thought more of a difference would be seen between them and the mono. Mr Seronik did what appears to be a very complete review . It comes as no surprise that in an F4.5 newtonian off-axis performance was less than excellent with the mono. What do you all think about this review after such glowing reviews from other people over the last few months ? Leonard Personally, I think the phrase "your mileage may vary" was erroneously left out of the review. I guess that's why there are so many different ocular designs out there and each has their loyal following. g Best regards, Bill |
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Review of TMB optical Monocentric eyepieces
Leonard wrote: Hello Group , In the August issue of Sky and Telescope Mr Gary Seronik does a review of the TMB Optical monocentric eyepiece What is a "moncentric" EP? Phil |
#7
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Review of TMB optical Monocentric eyepieces
Leonard wrote: Hello Group , In the August issue of Sky and Telescope Mr Gary Seronik does a review of the TMB Optical monocentric eyepiece What is a "moncentric" EP? Phil |
#8
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Review of TMB optical Monocentric eyepieces
Phil Wheeler wrote:
What is a "moncentric" EP? As I recall, a monocentric eyepiece is a three-element, one-group eyepiece in which every surface has the same center of curvature--hence the name. If anyone knows differently, please speak up. Brian Tung The Astronomy Corner at http://astro.isi.edu/ Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/ The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/ My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt |
#9
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Review of TMB optical Monocentric eyepieces
Phil Wheeler wrote:
What is a "moncentric" EP? As I recall, a monocentric eyepiece is a three-element, one-group eyepiece in which every surface has the same center of curvature--hence the name. If anyone knows differently, please speak up. Brian Tung The Astronomy Corner at http://astro.isi.edu/ Unofficial C5+ Home Page at http://astro.isi.edu/c5plus/ The PleiadAtlas Home Page at http://astro.isi.edu/pleiadatlas/ My Own Personal FAQ (SAA) at http://astro.isi.edu/reference/faq.txt |
#10
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Review of TMB optical Monocentric eyepieces
I have four of the TMB Super Monos (2-16's and 2-14's) and I haven't been able
to detect any astigmatism in them at all. That's using my F8 Tak FS-152 and a Binovuew w/ 2x barlow. Nice eyepieces actually... rat ~( ); email: remove 'et' from .com(et) in above email address |
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