TMB Planetary II
Posted 26 April 2013 - 03:12 PM
I am not interested in using them for planets.Mostly DSOs.
Posted 26 April 2013 - 07:45 PM
Posted 26 April 2013 - 09:47 PM
Posted 26 April 2013 - 10:14 PM
Posted 27 April 2013 - 06:36 AM
Posted 27 April 2013 - 11:32 AM
Posted 27 April 2013 - 11:51 AM
Posted 27 April 2013 - 05:08 PM
Posted 28 April 2013 - 05:11 PM
Posted 28 April 2013 - 11:31 PM
I only have one, the 7mm. I purchased mine from Astronomics also. It's a good eyepiece for the money IMO. I notice some ghosting/reflections on Jupiter, not enough to really bother me but noticeable. It is not as sharp on axis as an ortho or plossl so don't expect it to be. The eye relief makes it very comfortable to use. In my f/4.7 dob sharpness is good almost edge to edge. I also used it on several globs and planetary nebulae and was happy with it considering the price. Contrast and resolution are decent.
There are other eyepieces for similar cost other folks like better which you might also consider. AstroTech Paradigm's, and Sterling Plossls are liked more than TMB's by many here. If your budget allows a little more expense, it is hard to beat the ES82's in the "bang for the buck" category.
Posted 30 April 2013 - 10:19 AM
In short, the TMB held its own. I did prefer the Hyperion and the ES82 for viewing galaxies and nebulae - I felt they had more contrast and/or were perhaps brighter. But the TMB was just as sharp in the center of the field as the ES82. I actually thought the TMB was perhaps the best of the three for viewing globulars - M3 looked fantastic, with many faint, sharp stars popping out near and in front of the core. Near the edge of the field, the TMB loses some sharpness, but not as much as the Hyperion, which has a bit of field curvature.
Overall, I preferred the ES82 for sharp-to-the-edge performance and excellent contrast. But it doesn't have the the eye relief of the TMB and costs over twice as much. The Hyperion has plenty of ER and contrast similar to the ES82, but I could not get it to sharp focus all the way across its 68º AFoV. The TMB has a narrow (58º?) AFoV compared to the others, but performed fine at half to a third of the price of the others. I'd say it's an excellent value. I was especially impressed at the 9mm on-axis sharpness which makes it a great choice for globular clusters as far as DSOs go. Galaxies and nebulae didn't "pop" quite as much as they did in the ES82 or the Hyperion, but something has to give - it's a $40 EP.
I don't have but a few months of observing experience, so YMMV on these observations. But based on the planetary performance, where I greatly prefer the ES82s, I was expecting the TMB to be less pleasing than it actually was on DSOs.
Posted 30 April 2013 - 11:25 AM
So, no mushy views.
Just as I suspected.
No, but I can appreciate why that comment was made. Planetary views are noticeably more detailed through the ES82, even for a novice like me. I'd originally thought this was an issue with sharpness, but after seeing how sharply the TMB resolves stars, I'm now inclined to believe it's due to the relative contrast of the two EPs.
But the ES82 is 2.5x the cost, so it really should outperform the TMB. Otherwise there'd be no reason for anybody to own anything but the TMBs
Posted 30 April 2013 - 11:28 AM
The only time I got mushy views was when my wife got mascara on the eye lens.
Posted 30 April 2013 - 11:44 AM
Also, I failed to mention that the TMBs have the best eye cups. They fold up/down, and also twist up/down. Very flexible.
Posted 30 April 2013 - 08:38 PM
Posted 30 April 2013 - 09:59 PM
In any case, I own the 7mm and use it as my primary planetary piece. I will second the reported relative fuzziness and reflections stated above, but I really do love this EP for its comfort. I usually either have this one in when I don't want to fool with my other planetary setup (11mm TV Plossl barlowed out 2x), or when I have non-astronomer types taking a gander through my scope. The eye relief is fantastic for all types of eyes, from kids to older folks with glasses. Those types of folks aren't going to notice the small increase in fuzziness compared to something like a Pentax, and they are going to appreciate the "throw it in and look" factor of this eyepiece since they don't have to wait around while you muck around with barlows and refocusing.
All that said, I would save my cash and look elsewhere for a DSO EP. The TMB P-II just wasn't designed for that type of viewing. If you are looking for a great DSO EP with decent comfort that wont break the bank, I hear the RKE 28mm's are great, and have a neat floating effect to boot (although I have never looked through one, going to snatch one up myself here once I get a bit of cash ).
Posted 30 April 2013 - 10:31 PM
Posted 30 April 2013 - 10:33 PM
Posted 30 April 2013 - 11:17 PM
Posted 08 May 2013 - 12:29 AM
Well, the week ago i spent all the time observing the galaxies in Virgo.Although i am using most of the time using my 12T4-sometimes i use my hyp zoom at 8mm-i found out that i could use a little more magn (12T4 delivers x100).I could easily go at 8-9mm (and i would prefer that).That's why i am asking for your reports.I just need a little more magn when i observe,mostly,galaxies.The hyp zoom at 8mm does not give me any satisfactory views...
Posted 08 May 2013 - 10:46 AM
The scope I was using for this comparison was the 120mm F/8.
Posted 08 May 2013 - 06:14 PM
Do TMBs have quality control issues?
Posted 08 May 2013 - 08:35 PM