10" F/4.7 Modified Skywatcher Reflector, 38mm Orion Q70, 17mm Modified Ultima LX, 10mm TeleVue Delos, 7mm Pentax XL, 5mm AT AF70 (soon)
"Great men are forged in fire. It is the privilege of lesser men to light the flame." --John Hurt, as The War Doctor12" f/4.9 Skywatcher Collapsible Dobsonian8" f/4.9 Orion Newtonian w/Lockwood re-figured primary on alt-az mountOberwerk 15x70 BinocularsMinimalist Eyepiece Collection: 30mm ES-82, 22mm Vixen LVW, 14mm Delos, 10mm Delos, 7mm Pentax XW, 2X GSO 2" ED Barlow, 3X Explore Scientific Focal Extender, 4X Powermate
Scopes: Celestron 9.25, Orion 80MM and 120MM EON Apo
Solar: Lunt LS60THa/PT/B1200/50DS
Binos: Canon 15X50 IS Mounts: CGEM and LXD75
Eyepieces: Explore Scientific, Meade & TeleVue
Camera: DMK 41, Canon 6D, SBIG STT-8300
Messier Certificate # 2508
My Images: http://www.astrophotogallery.org/u342-hfjacinto.html
Zhumell Z10 Telrad w/DIY dew heater ES82 30mm, ES100 20mm,14mm,9mm,5.5mm
Syed - Dob guy for sure Teeter STS 11 f/4.3 Zambuto | XT8i | XT8g | XLT 150 | C90 | EON 80mm
Ed Jones EQ Platform; AT Voyager and Nexstar SLT mountsEyepieces: Mostly TeleVue and PentaxDenk II BV'er, Earthwin PFS-SE, Pentax 10x50 PCF WP II
Orion ED80 - AT Voyager with TNT,pier ext.,Vixon steel tray and Manny's mod.
Omni 120 cg4 with Orion pier ext. and RA drive, Binotron-27 (25mm & 17mm Sterlings)
Orion XT10(Original F/5) SkyStopper Equatorial Platform
Jason Constellation Model 311(Modified with 1.25"Crawford Machine focuser & rings)
Quote:Mark, I have not heard your comments on the ES68 28mm in your scope, other than you are 'looking for better edge correction'...
Quote:I'm not sure Mark:
30mm gives 2.05FOV and 3.30 square degrees. 20mm gives 1.67FOV and 2.19 square degrees.
M32,M31 and M110 just fit in same FOV of 30(a beautiful sight). There are quite a few other situations where that 2.05FOV is advantageous.
But there are also numerous objects that will benefit from the darker background and where the smaller FOV will not be a hindrance. Large open clusters come to mind, but it depends on how you like your objects to be framed in the eyepiece as well. More sky or less sky.
Nevertheless I am rooting for the 20 so I can try it out
Quote:I have both in my collection, but if I had to pick one I would go with the 20. You will get more use out of it.
Quote:The pic I have added shows what I see in the 28m ES in my scope. I do NOT see this in the 20mm ES 100 or 30mm Meade 5000 UWA!
Quote:In the end, it's your call, but I put my vote in for the ES100 20... If getting the ES100 14 means parting with the XW 10, I say resist. You already know you love the XW 10, make sure you love the ES100 series before you leap, so the best way is to acquire and use the ES100 20 for a good long time to make that judgement.
Quote:I think there may be an undiscovered comet in there somewhere,
ES 68º series complete 2x ES Barlow WO Bino's NPL 30 RKE 28 SWA 20 15 WA 12 pairs 150 f12 Istar Achro f4.8 Orion Optics (UK) VX 10" Newt NEQ6
Blog: Astronomy & Living by Hernando
Remember to have your clouds spayed or neutered, contrails included.
Quote:I tried the 20mm ES 100 with the Antares 1.6x barlow. it nets me 96x, but it does vignette the edges and it is too close in mag to my 14mm ES 100. I was also able to try all three ES 100's last night. My favorites are the 14mm and 9mm Es 100's. The 20mm ES is OK, but I want the 30mm ES 82 instead. I'll be selling off the 20mm ES 100 and getting the 30mm ES 82 to replace it.....I would also look for a trade.....
Quote:Might just keep the 20mm ES 100 now and get a low power beater EP for The Veil, etc. Then I can have both! The 20mm and a regular barlow is pretty scary on the weight factor! I can just imagine the weight of the 20mm ES 100 and a Powermate or Tele extender !!!!
Quote: The 38mm Q70 will give an exit pupil over 8mm - you are wasting light!!
"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
Quote: Quote: The 38mm Q70 will give an exit pupil over 8mm - you are wasting light!! Who ever cared about that at low power. Besides, a 10" has plenty of light, so if it loses 10% or so, it doesn't matter. But what does matter is whether the object fits in the field of view. If it does, it's good. Clear skies!Thomas, Denmark
Quote:Might just keep the 20mm ES 100 now and get a low power beater EP for The Veil, etc. Then I can have both!
Homemade 14.5" f4.3 Truss Dobsonian
"I'd like to remind you at four in the morning my world is very still, The air is fresh under diamond skies, makes me glad to be alive." Randy Bachmann "Blue Collar"
“A mind is like a parachute. It doesn't work if it is not open.” ― Frank Zappa