Results 1 to 7 of 7
  1. #1
    dpickles55's Avatar
    dpickles55 is offline Main Sequence
    Points: 6,651, Level: 56
    Level completed: 51%, Points required for next Level: 99
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!750 Days+ Registered Achievement!First 1000 Experience Points5 Threads Achievement!2 Posts Achievement
    Join Date
    Oct 2010
    Location
    Lk. Simcoe, Ontario
    Posts
    113
    Points
    6,651
    Level
    56
    Thanks
    10
    Thanked 37x 36 Posts

    Default 2" wide angle eyepieces



    Hello,

    I'm in the market for a quality 2 inch wide angle finder eyepiece in the 30mm to 36mm range. I am interested in comparisons between the Explore Scientific 82 degree 30mm, the Explore Scientific 68 degree 34mm, the Baader Hyperion 72 degree 31 and 36 mm Aspheric pieces, and any others in this catagory. I use a F6 reflector and a F7 refractor, so I don't think I need to spend the big bucks on the green lettering units, but I may be wrong.
    If anyone uses any of these eyepieces and can comment on quality, contrast and view to the edge, it would help greatly with my choice.

    Thanks for your help,
    David

  2. #2
    Johann von Hesse's Avatar
    Johann von Hesse is offline Bright Giants
    Points: 5,843, Level: 52
    Level completed: 47%, Points required for next Level: 107
    Overall activity: 0%
    Achievements:
    5+ Referrals Achievement!365 Days+ Registered Achievement!First 1000 Experience Points200+ Posts Achievement!50 Posts Achievement!
    Join Date
    May 2011
    Location
    New York
    Posts
    360
    Points
    5,843
    Level
    52
    Thanks
    196
    Thanked 249x 160 Posts

    Default

    Quote Originally Posted by dpickles55 View Post
    Hello,

    I'm in the market for a quality 2 inch wide angle finder eyepiece in the 30mm to 36mm range. I am interested in comparisons between the Explore Scientific 82 degree 30mm, the Explore Scientific 68 degree 34mm, the Baader Hyperion 72 degree 31 and 36 mm Aspheric pieces, and any others in this catagory. I use a F6 reflector and a F7 refractor, so I don't think I need to spend the big bucks on the green lettering units, but I may be wrong.
    If anyone uses any of these eyepieces and can comment on quality, contrast and view to the edge, it would help greatly with my choice.

    Thanks for your help,
    David
    All of the eyepieces your asking about have good contrast and sharpness. They will work good in your scopes. So,.. what it comes down to, is how wide do want to go.
    RCP Observatory
    A Veteran of the Binoviewer Wars (2001-2003)
    10" f/10 LX200GPS
    6" f/6.5 / 5" f/6.5 / 4" f/6.5 Refractors
    6" f/9 Refractor / 8" f/9 Refractor
    Eyepieces: Zeiss / Olympus / UO Konig / TeleVue / Siebert Optics Ortho's & Observatory 2"

  3. The Following 2 Users Say Thank You to Johann von Hesse For This Useful Post:

    j.gardavsky (12-26-2011),Joe Lalumia (01-02-2012)

  4. #3
    jerryTheC's Avatar
    jerryTheC is offline Super Moderator
    Points: 26,972, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 11.0%
    Achievements:
    365 Days+ Registered Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!First 1000 Experience Points
    Join Date
    Apr 2011
    Location
    Harrow, UK
    Posts
    6,032
    Points
    26,972
    Level
    100
    Thanks
    335
    Thanked 1,915x 1,623 Posts

    Default

    One major factor is how fast your scope is - I tried a budget extra wide FOV 2" eyepiece on an SCT and it worked fine; the same eyepiece on a fast reflector showed major distortion around the edges - but the centre was OK and you could still see things in the distorted edge regions, so it was still OK for spotting things (and the central area remained undistorted). You should probably be OK
    with the f6 scope - I think I tried the SCT with an f6.3 reducer - but faster than that and things get more demanding.

  5. The Following User Says Thank You to jerryTheC For This Useful Post:

    roverich (01-02-2012)

  6. #4
    Joe Lalumia's Avatar
    Joe Lalumia is offline HYPER GIANT
    Points: 61,001, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!Ghost Achievement! Averaging 5+ posts a day!Got three FriendsFirst 1000 Experience Points20+ Friends Achievement!
    Join Date
    Jun 2010
    Location
    Quinlan, Texas
    Posts
    10,947
    Points
    61,001
    Level
    100
    Thanks
    6,772
    Thanked 5,156x 3,400 Posts
    Blog Entries
    1

    Default

    Personally I find that anything of about 65 degrees to 70 degrees is more than enough field of view as long as it has at least 15mm or more of eye relief.

    Just my 2 cents worth.

    Clear skies!
    ETX 125PE, Stellarvue 80mm BV & Televue TelePod tripod,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    8" LNT, 10x50, 15x70mm binoculars, Stellarvue binoviewers, solar filters for all three
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ..... plus a bunch of ham radios... Ham radio call sign - W1XWX

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    TelescopeMan Web Site

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    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

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  7. The Following 2 Users Say Thank You to Joe Lalumia For This Useful Post:

    j.gardavsky (12-26-2011),Johann von Hesse (12-26-2011)

  8. #5
    j.gardavsky's Avatar
    j.gardavsky is online now Super Moderator
    Points: 110,900, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.6%
    Achievements:
    Ghost Achievement! Averaging 5+ posts a day!200+ Posts Achievement!400+ Posts AchievementFirst 1000 Experience Points365 Days+ Registered Achievement!
    Awards:
    3rd Most Active Award
    Join Date
    Feb 2011
    Location
    Germany
    Posts
    14,396
    Points
    110,900
    Level
    100
    Thanks
    14,392
    Thanked 8,784x 5,719 Posts

    Default

    Hello David,

    I have the Baader 31mm Hyperion 72deg, but using mostly the Astro-Professional 16mm/82deg for navigation and rich field views,
    UWA Ultra Weitwinkel Okular 16 mm, 82°, 1,25\\\\\\\\\\\\\\\"
    It is China-make (possibly United Optics), but it does a good job for the price.

    Drop a line to ibase, he owns a mass of EPs,
    Hyperion Zoom Eyepiece Thread Part II
    and he can comment on the issue.

    Best

    JG
    Binoculars: Leica Ultravid 7x42, 8x42HD; Swarovski EL 8.5x42 Swarovision; Nikon 10x70 Astroluxe; Docter Nobilem 7x50 Porro; Jenoptem 7x50W, 10x50W; BA8: 10.5x70, 15x85; 25x100FB, AsahiPentax 8x40, Refractors: Sky-Watcher 150mm/750mm; Leica APO Televid 82mm (25x-50x WW ASPH); EPs:Baader Classic Orthos; Fujiyama ortho, Leica B WW, ultrawide zoom ASPH, Periplan GF, HC Plan S, L; DOCTER UWA; Wild UW mil; Tele Vue Delos, Nagler Zoom, Plössls; Swarovski SW; Pentax XW; ZEISS diascope B WW T*, Carl Zeiss E-Pl; Hensoldt mil; Filters: Astrodon, Astronomik, Baader (CCD), TS;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    : AstroTrac; Leica R7: Leica 2/50, 2/90mm, 2.8/180mm lenses
    Astronomy Forum Rules and Terms of Service
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  9. The Following User Says Thank You to j.gardavsky For This Useful Post:

    Johann von Hesse (12-26-2011)

  10. #6
    skaven's Avatar
    skaven is offline HYPER GIANT
    Points: 38,820, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!First 1000 Experience Points5+ Referrals Achievement!
    Join Date
    Dec 2011
    Location
    San Diego
    Posts
    2,697
    Points
    38,820
    Level
    100
    Thanks
    180
    Thanked 1,926x 966 Posts

    Default

    My personal preference (others may disagree) is that you want to get the most magnification you can while maintaining the useful field. I find that my ES-82 30mm, which gives me a 2.1* FOV in my f/4.7 10" scope, does that in spades. I get 40x power without losing that huge field -- I can practically use the EP as a finder the field is so big.

    But -- I do find that 82 degrees is a very wide field; even swiveling my eyeball around in the EP I can still barely catch the field stop as a fuzzy dark line in my peripheral vision. So at least for me, I think an 82 degree AFOV is about as wide as I can go comfortably. Your mileage may vary, of course :-)

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    C10-N/C14+Losmandy G11; Portaball 12.5"; NexStar 6SE; Meade ETX125; Stellarvue F80
    Meade HD-60 9mm, 6.5mm; 56mm; University Optics Orthoscopic 12.5mm, 9mm, 7mm, 5mm;
    ES 70° 15mm, 20mm; ES 82° 30mm, 18mm; ES 100° 9mm; Baader Hyperion 24mm; TV Nagler T6 13mm
    William Optics Binoviewer; GSO 2" 2x ED barlow; 5x APO barlow, Parks 2.5x APO barlow
    Filters: Orion Ultrablock, Thousand Oaks OIII

  11. The Following User Says Thank You to skaven For This Useful Post:

    j.gardavsky (01-04-2012)

  12. #7
    gbcarync's Avatar
    gbcarync is offline Bright Giants
    Points: 12,836, Level: 78
    Level completed: 25%, Points required for next Level: 264
    Overall activity: 3.0%
    Achievements:
    200+ Posts Achievement!400+ Posts AchievementFirst 1000 Experience Points365 Days+ Registered Achievement!750 Days+ Registered Achievement!
    Join Date
    Nov 2010
    Location
    Cary, NC
    Posts
    521
    Points
    12,836
    Level
    78
    Thanks
    88
    Thanked 212x 153 Posts

    Default

    I bought this 38mm SWA from Agena Astro. It's the same as the Orion Q70 but $20 less.

    Agena Super Wide Angle Eyepiece - 38mm

    I love this eyepiece in my Orion XT12G.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    Celestron Edge HD 8",
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ED80T CF Triplet APO Refractor
    Atlas EQ-G and Orion Magnificent Mini Auto-guiding Package
    Modified Canon T3i
    Location: Cary, NC


    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

 

 

Similar Threads

  1. Wide angle eyepieces for ETX 125
    By altnacraig in forum ETX Telescope Forum
    Replies: 2
    Last Post: 08-15-2012, 07:33 PM
  2. For Sale: 100° 2” Super Wide Angle Eyepieces
    By phiber in forum Astronomy Classifieds
    Replies: 10
    Last Post: 05-04-2012, 08:44 AM
  3. Owl Enhanced Super-wide Angle Eyepieces
    By craspy in forum Telescope Eyepieces Forum
    Replies: 2
    Last Post: 09-07-2011, 06:05 PM
  4. Cheap wide angle eyepieces
    By RichA in forum Amateur Astronomy Forum
    Replies: 28
    Last Post: 12-08-2004, 06:14 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Powered by vBulletin® Version 4.2.0
Powered by vBulletin®
All times are GMT. The time now is 05:57 PM.