AD10, NoName8, DS-16 with Spooner primary.
ES, Sterling, Parks, Baader, TV, GSO EP's and a lone Nagler.
Nikon, Celestron binos
Celestron 8SE XLT Celestron 6SE + Antares f/0.63 focal reducer Celestron SE Goto Mount Kson 1026 ED Carbon Fibre tube Skywatcher Synscan AZ Goto Various EPs (Baader Mk III Zooom, BST, Televue, X-Cel LX)
Meade LS8 ACF Meade 2" Diagonal Apetura 10" Tweakers Package Meade ETX-125, ETX-90 for Solar Celestron 80mm APO PST Meade SWA - 34mm,28mm,24mm,20mm Brandon 32mm, 16mm Vernonscope 40mm Erfle 2" ES 14mm,11mm,6.7mm 8.8 Nagler 13mm T6, Pan 19mm Meade 12.4 Pl,9.7mm, 15mm SP Meade 2x Shorty Barlow Powermate 2.5x WO Bino Viewer, 20mm 66* pair Denkmier 2 Super System Meade Nebula Filters Meade 9x60 Bino Vivitar S1 8x42 Bino Canon T2i, 18-55mm, 50mm 1.8, 55-250mm
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:Bill, my understanding is that they are the same glass in different packages. Is that not the case? (My 9mm is actually the Meade variant).
Vixen 140mm Neo-achro, 2" AP Maxbright diagonal, 40mm Orion Optilux, 35mm, 30mm, 18mm, and 15mm Ultrascopic/Ultima, 28mm & 20mm ES 68, 19mm TV Panoptic, 5.5mm Meade UWA, 2.4x 2" Dakin barlow (prototype barrel),1.6x Antares barlow.
Quote:I bought a 5mm Celestron X-cel LX last month, and haven't been thrilled with it. I have the 7mm and 9mm and like them both, they hold up well in an F/5 dob. Had a chance to use it in a friend's F/7 Discovery dob last night and his unsolicited comment was "muddy".I can return it for replacement or refund, and have the RMA. Without knowing whether this is just the nature of the beast or I just got a lemon, I'm uncertain what to do.Should I give another one a try, or go with something else? Anyone have experience and/or thoughts about this particular LX? Would appreciate your input.
My eyepieces are made from the waste product of exploding stars. 10XTi 102XLT ST80A(2" Focuser) XW: All; XO: 2.58 Televue: Naglers-T1 Smoothside-full set, 17T4,12T4,Ethos 17,4.7; plossels-40,32,20,17,&7.4mm; Pans-22,24mm; Delos-6,8,12,17.3mm ES100: 5.5,9*,14,20 ES82: full set ES68: 16,20,24,34 NLV: 5,9,10,15 Ortho: HD-7,9; OPS-9,12 Meade RG 7mm Other: Pentax 12.5K(.965), 10mm Parks Zoom: Nag3-6 *=on b/o DAS Dark Site
Quote:Truthfully, I'm not surprized the view was a little fuzzy with a 5mm eyepiece in an f7 scope as you are under 1mm exit pupil. Unless the viewing was fantastic, you just can't push the mag like that.
Quote:The Celestron X-cel LX and the Meade HD-60 are the same glass in a different packaging, but the Astrotech Paradigm's are a different design. IMO the Paradigm gives the superior performance. I have really been shocked at just how good the transmission seems to be in the Paradigm's. Last night at one point I was looking at the Orion nebula with my 20mm XW (40x) and then I switched to the 15mm Paradigm (53x) and the nebula actually seemed richer and brighter. I also noticed the same outcome with the 15mm Paradigm against my 12.8mm Zeiss (63x).
Good point...and agreed. Since the OP stated it was a Discovery scope and f/7, then likely their 8" model. In that case a 5mm eyepiece in an 8" f/7 scope would produce 284x...so a bit on the high end to expect crystal clarity (plus compound on that the potential eye issues given the low exit pupil).
Quote:Hmmm... I think the wise thing to do at this point is return it and and do some more research. I can always barlow up a 10mm to cover it in the meantime. Thanks everyone for the great input.
BTW, the guy who has the 8" Discovery has 5mm EP's that do well in it. The 5mm came into the mix to equalize the difference in the focal lengths of the two scopes when comparing the 7mm EP's. With 40 years more experience than I have, when he voices an observation, I listen...
10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL.
Quote:aberrations can be hidden in light polluted skies
Quote:Quote:The Celestron X-cel LX and the Meade HD-60 are the same glass in a different packaging, but the Astrotech Paradigm's are a different design. IMO the Paradigm gives the superior performance. I have really been shocked at just how good the transmission seems to be in the Paradigm's. Last night at one point I was looking at the Orion nebula with my 20mm XW (40x) and then I switched to the 15mm Paradigm (53x) and the nebula actually seemed richer and brighter. I also noticed the same outcome with the 15mm Paradigm against my 12.8mm Zeiss (63x).
Better than a Pentax XW or a Zeiss? I find that hard to believe. (Not saying I don't believe you Dave, I'm just saying that the glass in both the XW and the Ziess are far superior). Must have been conditions or something?
Quote:...and for your listening pleasure, there's the Taos Hummmmmmmm