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About LinkBacksI am thinking about getting a 2" GSO eyepiece for some wide field bright views, maybe a 42mm. As i live in a light polluted area i'm hoping this will give me enough light to see some messier objects. I have seen the Orion nebula through 1.25" 25mm and 10mm eyepieces, the view was clear but quite small. Will the 42mm not give enough magnification to see messier objects? Or will i see more?
GSO Revelation 2" eyepieces
I also want a 3x 1.25" barlow for the planets.
Antares Antares 1.25" 3x Barlow lens
8 inch skywatcher dobsonian telescope
Optical Design Newtonian (Parabolic)
Lens Material
Diameter 203mm
Focal Length 1200mm
Scondary Mirror Diameter 47mm
F/ratio F/5.9
Highest Practical Power 406x
Faintest Steller Magnitude 14.2
Resoving Power 0.56
Finderscope 9x50*
Focuser diameter 2” with 1.25” adapter
Diagonal
Eyepiece(s) 1.25” Super 25 and 10*
Mount Type Dobsonian
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- 11-19-2011, 10:01 PM #1
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messier objects with a 2" 42mm on an f 5.9
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- 11-19-2011, 10:11 PM #2
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I think that will be a fine eyepiece for wide angle viewing. The EP I use most often in my 8" scope is my 27mm. It gives me about the same magnification as the 42mm will give in yours, so the brightness level will be comparable too. I can see even small objects like M57 with it. Best of all, I can see dim objects pretty well on a dark night.
You will find it extremely useful for finding faint objects. Once you have found them, you can always step up the magnification to see more detail.
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DSO AP:
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Newtonian Astrograph; ATIK 383L+; EFW2 filter wheel; Astrodon Ha,LRGB filters; KWIQ/QHY5 guide
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; Planetary AP: Celestron C-11; ZWO ASI120MC; Portable: Celestron C-8 on
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pro; C-90 on wedge; 20x80 binos; Etc: Canon 350D; Various EPs, etc. Obs: 8' Exploradome;
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(pier);
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- 11-19-2011, 10:16 PM #3
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i have pretty much the same ep,mine is
a gso superview with a 68* fov.
i also have an 8"s/w dob.
i love the ep for what it gives,wide field views.
it works pretty well in my scope,with my eyes.
they perform better than the price suggests.
if you get one,you won't be disappointed imo.
clear skies,
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andy
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revelation 20X80 bino's,camlink tp-2500 camera/bino tripod.
a few bits and pieces and a major addiction
to the sky.
ARCHAEOLOGISTS WILL DATE ANY OLD THING
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- 11-23-2011, 02:59 PM #4
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Same here-- I also own the 2 inch GSO Superview. It gets a lot of use on extended Messier objects like M45, and to locate dim objects.
ETX 125PE, Stellarvue 80mm BV & Televue TelePod tripod,
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8" LNT, 10x50, 15x70mm binoculars, Stellarvue binoviewers, solar filters for all three
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..... plus a bunch of ham radios... Ham radio call sign - W1XWX
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TelescopeMan Web Site
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search for W1XWX to see my amateur radio web site
"If you can't explain it to a six year old, you don't understand it yourself.” - Albert Einstein
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- 11-26-2011, 08:38 AM #5
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Since you observe from a highly light polluted area, beware that the 42mm eyepiece will accentuate the sky glow as much as your intended targets.
Eric
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XT10 (original F/5), Omni 120 CG4, Orion ED80, Jason 311,Astro-Tech Voyager
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