Quote:Are these BCO's really different (optical wise) then the BGO's besides the differences in coating?
The opinions expressed herein are solely mine as an amateur astronomer hobbyist & consumer. Information herein was correlated from experience, discussions with others, & research from multiple sources freely available at time of posting. All reasonable care & skill was used, but no warranty is made as to accuracy, & liability cannot be accepted for errors/omissions. This is for information only and not intended nor implied to be a substitute for professional advice.
Quote:Quote:Are these BCO's really different (optical wise) then the BGO's besides the differences in coating? They are the same in that they are an Abbe Design.They are different in that this Abbe design is modified relative to the BGOs since the lenses are much larger in diameter.At the eye, for me the perceived difference is that the BCOs present a slightly brighter image than the BGOs.
Quote:How does BCO 18mm compare to Sterling Plossl 17mm? I'm thinking about getting either one.And how about BCO 10mm vs Sterling Plossl 12.5mm?
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:Gee, has this topic gone off into an examination of any eyepiece that comes to mind? The OP, and I, would like to know about anyone's actual use of a BCO since being delivered this past week or two, not yadda-yadda-yadda. Seeesh!
Quote:I like observing the moon with neutral-toned eyepieces (Brandon's) that show the surface coloring as it really s and more realistically -- a cool gray color. There is no sunrise/sunset earth-like atmospheric coloring on the moon.
Quote:Quote:Gee, has this topic gone off into an examination of any eyepiece that comes to mind? The OP, and I, would like to know about anyone's actual use of a BCO since being delivered this past week or two, not yadda-yadda-yadda. Seeesh! +Quote:I like observing the moon with neutral-toned eyepieces (Brandon's) that show the surface coloring as it really s and more realistically -- a cool gray color. There is no sunrise/sunset earth-like atmospheric coloring on the moon.= irony
Quote:Quote:How does BCO 18mm compare to Sterling Plossl 17mm? I'm thinking about getting either one.And how about BCO 10mm vs Sterling Plossl 12.5mm? That sounds fun...the 17 vs the 18. Will do that next clear evening 10mm and 12.5mm are too far apart for meaningful comparison since the exit pupil of the 12.5mm will be approx 56% brighter! The 17 vs 18 is a little more level with the 18mm's exit pupil being about 12% brighter.
All MY reflectors are apochromatic. I am personally covered with infrared detectors and emit at 295 Kelvin, 24/7. If I were to recieve a spin entangled photon before you recieved its twin, MY photon would predict your photon's spin. Every time. MY family's lineage goes back over three billion years and has a whole branch of science devoted to studying it... The most Quotidian of observers
Quote:I notice that on your website, in terms of "going deep" you rate the BGO's between the Zeiss and Ethos, but a bit closer to the Zeiss. So does this mean that for transmission, the BGO's are about equal to the Delos, or even between the Zeiss and Delos? Mike
Quote:I'm also wondering how "good" the BCO barlow is...I don't expect to be close to my TMB 1.8x ED barlow, but who knows. Anyone played with one? Any in or out of focus required versus native eyepiece?
Since several people now own these eypecies, has anybody compared them with the top notch, such as Zeiss abbe?
Quote:When viewing the Moon through my 90mm Mak, a TV Plossl 11m gave me better contrast than the BCO 10, FO 10.5 or BGO 9mm, especially on the maria. Not appreciably finer detail, but more contrast.Mike
Quote:Had a set ZAO 2's, found so many eyepieces just as good, like Pentax XW's, out went the Zeisses.The latest Baaders, Kasai, in fact any ordinary available ortho/plossl is less sharp/contrasty than the Pentax or the new Delos.
Quote:The field stop of the exepiece looked not cut out sharp, but somewhat rough and fuzzy
Quote:The 1 extra mm in the TV could affect perceived contrasts though - particularly in less than good seeing.
Quote:I have the 6 and 10mm BCO and will try and do some real world comparisons with my 6 and 10mm Delos and 6 and 10mm ZAO-II and report back here.
Zhumell Z8 8" f/6 Dob Meade DS-2090 90mm f/9 on EQ1 mount (modified) Olympus Trooper 10x50 DPS I bino Quantaray Dakota 9x40 bino
I wanted to get the 6mm BCO to be used in both my scopes for planetary but not sure how good is it.
Blog: Astronomy & Living by Hernando
Quote:The 6mm seems to me quite good compared to others 6mm "cheap" EPs (Celestron OMNI, various "Chinese Plossls", TAL 6.3mm); I think it is rather comfortable (in fact it is the only one of the whole bunch where I could see the full aFOV without removing something). However the Tal exhibits a little less scattering.In any case if you could find a t-japan instead my advice is to grab it