Quote:paradigm only goes down to 8mm
8 f7.62 eq.
12 f5 Dob
Barly my 10 yr old faithful Bichon pup.
Quote:paradigm only goes down to 8mm and I read that the 8mm is the worst of the bunch IRT aberrations. I have not used this eyepiece but love my 12mm paradigm.
C10NGT, Z8, 150 Rumak, XLT 150, C6, C5, SW5 Newt, 4.5 Ball, C102GT, C90, ST80, A70LF; 15x70, 25x100; Burgess BV; Paracorr II; T6 2.5, XO 2.58/5.1, Ethos-SX 3.7, Delos 4.5, TV Plossl 7.4-26, BCO 10, Hutech HC 12.5, Sterling 12.5-25, ES100 14, CZJ H 16/25, CZJ O 16, M5k UWA 24, T5 31, Ultrascopic 35, Titan-II 40; Bino Pairs M5k UWA 6.7, Baader Zoom 8-24, M5k SWA 24, TV Plossl 26, RKE 28.7; Zooms NZ 2-4, NZ 3-6, Leica ASPH 8.9-17.8, Baader 8-24; Baader Zoom Barlow, VIP Barlow
Quote:I read that the 8mm is the worst of the bunch IRT aberrations. I have not used this eyepiece but love my 12mm paradigm.
Bryan Stone Past President, NSAAC (North Shore Amateur Astronomy Club) Visual Astronomer with: "GoldenEye" XT8 Classic, flocked, Moonlite CR2(Gold), Telrad, 1st Base mount Serial #001 "Night Hawk" SV 80mm f/7 Aplanat on M1/GNG TV 11NT6, 32P, 1.8xB, Pentax XF 8.5 ES 82 N2 6.7, GSO SV 30, UO KII 16 Lumicon OIII,Orion Ultrablock, Moon Filter, 4 color filters, 25mm Sirius P, 10x50 Explorer Binocs, Celestron broadband filter,Tectron collimation tools, Pelican 1500 Divider Case, StarDust chair
Quote:The Paradigm 8mm is not the dog of the line, by any means.
NexStar 8SE; Stellarvue SVR90T; Celestron 102GT; Orion ST80 Orion 9x63, Oberwerk 15x70 binos
And there they still stood, obscurely commemorating man's triumph over time and matter and the triumph of time and matter over man. -- Aldous Huxley, on the Mayan stelae at the Quirigua ruins
Quote: I read that the 8mm is the worst of the bunch IRT aberrations.
“I am the only person to ever ace a 1951 USAF resolution test. My 'to observe' list says 'done'. I do not use charts or atlases when I starhop; men do not use maps. One of my sketches won an SBIG deep sky imaging contest. I am the life of star parties I have never attended. I never say anything looks like a faint fuzzy - not even a faint fuzzy. Pilots aim green laser pointers at me. Don Pensack proofreads my CN forum posts.” - The Most Interesting Astronomer in the Universe
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A Mag 1, 12.5 inch Porta Ball
A Dual Axis Equatorial Platform
A PST Double Stack
Shane in black-zone New Mexico
DJ Eastern Missouri, USA Bushnell 8x42's, SV80ed, Nexstar 130SLT, C5+, 8" LX200 Classic, 10" f/7 Cave, Orion XT10 w/Moonlite focuser
Quote:Mark,You're in a kind of strange situation. First, I'd have to say that, although I agree with all GeneT's suggestions in terms of quality, I think they're somewhat absurd for you. All of them, except the XO, are HUGE, and compared to what is right now your heaviest eyepiece, the 25mm Sirius Plossl, monsters. They all weigh well north of 13 oz, and are something like four times heavier than your 25mm plossl. The XO, tho small like your 10mm plossl, cost almost as much as your telescope! Given the eyepieces you're comparing in your original post, I'd have to say you're in the sub $150 market, maybe the sub $100 market. GeneT's suggestions are, therefore, mostly too heavy and all irrelevant due to cost if my assumptions are correct.Normally, I'm inclined to agree with Jim Barnett's suggestion of a good barlow. This has worked GREAT for me, btw. But Shane's parodizing picture from a scope very similar to yours demonstrates that, in your case in particular with the Orion StarBlast 6, maybe this is not the best path, either, due to the bizarre balance points created by a good barlow in your scope type. This wouldn't be an issue if the original manufacturer (probably Synta) had made the tube an inch longer, but they didn't, trying to jam as much optics into the shortest tube possible, with the inevitable result of pushing the normal focal plane out into the 1.25" focuser area. One can lament the design all one wants, but like Shane points out, that's the design you have.Under the circumstances, I'm inclined to agree, rather reluctantly, with your original supposition of the Paradigm 5mm. I say rather reluctantly, because I've never looked through one, and I'm a little hesitant to recommend something I've never seen myself.There is the possibility of getting a good shorty barlow type, and then Jim's suggestion might work. I'm not a big fan of the shorty style barlows, personally, but the old UO 2.8x Klee gets generally high marks on CN. Had one myself long ago before I bought my wonderful old school Orion Fully Baffled model. Another possibility is the new barlow from Baader that is being sold with their new ortho line. These might be okay. I'm not a big fan of shorty's due to the vignetting of field that they often inflict on an eyepiece. On top of that, it's almost always better, in optics, to give an optical device more room to work. Shorty's, by definition, do not, so glare, optical imperfections, etc, are all maximized with the shorty barlow design. For these reasons, I'm not such a fan, but in your scope's case, it may be the only way to go.As for regular eyepieces to barlow, well, you have a 10mm Sirius Plossl. An okay start. I've always been a fan of the TV Plossls, and those can be had used for around $60-$80. The 11mm barlowed would be a powerful, and very sharp, planetary combination. I have no hesitation recommending it for resolution. But one must also consider eye relief. Although a barlow will enhance the eye relief, trust me, the ER on the 11mm TV Plossl is truly horrible. I'm certain the ES 4.7 and AT Paradigm 5mm would both have much better ER than a barlowed TV 11mm Plossl. There are rumors that the UO HDs are coming back, and the 12mm model would make a great size to barlow. Another possibility is the new Baader Classic Ortho 10mm. Although it's likely to be a better eyepiece than your Sirius Plossl, it is the same focal length and getting something a little different is a good idea. This guy here, from our sponsor, is a really good choice, too. This is the same Long Perng eyepiece known as the Sterling Plossl. Not expensive at all, really good FOV for a plossl, and it should yield a nice magnification barlowed.A very good mid-range focal length eyepiece can really perform barlowed. Read this for an example. I'm not such a fan of the JOC eyepieces (ES/older Meade 5k UWA) for planetary anymore after that, and Naglers and Brandons are in the same price category of the XO, XW, Delos -- a LOT more money than you appear to be in the market for. I just don't know if a Paradigm 5mm would keep up with your Sirius Plossl 10mm barlowed, and especially a BCO 10mm ortho, TV 11mm Plossl, or similar good quality low-glass mid-range eyepiece.Good luck