Page 3 of 4 FirstFirst 1234 LastLast
Results 21 to 30 of 40
Like Tree23Likes

Thread: Strategy for eye piece purchases

  1. #21
    Bigzmey's Avatar
    Bigzmey is offline HYPER GIANT
    Points: 40,753, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 59.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Sep 2015
    Location
    Planet Earth
    Posts
    7,545
    Points
    40,753
    Level
    100
    Thanks
    1,801
    Thanked 3,185x 2,291 Posts

    Default Re: Strategy for eye piece purchases



    And here is my review of Meade 5000 UWA 18mm

    http://www.astronomyforum.net/telesc...rst-light.html

    I had another long and productive galaxy hunting session since that review and UWA 18mm performed great. In your scope it will produce 3.6mm exit pupil great for large DSOs and scouting for galaxies. In my F10 scope the equivalent EP is Baader Aspheric 36mm and it is one of the most used EPs.
    Last edited by Bigzmey; 06-07-2017 at 09:49 PM.

  2. #22
    Trombatissimo's Avatar
    Trombatissimo is offline HYPER GIANT
    Points: 10,686, Level: 71
    Level completed: 46%, Points required for next Level: 164
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!Gallery Achievement!Album Achievement!
    Join Date
    Feb 2017
    Location
    Montreal, Quebec, Canada
    Posts
    1,981
    Points
    10,686
    Level
    71
    Thanks
    951
    Thanked 773x 613 Posts

    Default Re: Strategy for eye piece purchases

    The Meade/ES comparison seems to be very close, with a slight preference expressed for the ES. I have compared both of them as well as the Nagler 17 and the Celestron Luminos 19, and they all have strengths and weaknesses that put them very close in overall performance. The lower price of the Meade and Celestron make them popular, while the Nagler is a distinct winner for people with eye limitations. If you prefer greater eye relief, the Meade has 17mm whereas the ES has 13mm. There are many instruction articles posted on the web about "decloaking" the Meades, which is removal of the outer shroud to make the outer body narrower. This allows use in binoviewers to give you the maximum magnification and field of view that is possible with a 1.25 inch mount. They also show up fairly often as used items on the various resale sites and fleabay. If the 1.25 inch mount, smaller size and lighter weight are desirable for you, the Meade is the only 82 degree field eyepiece that offers all of these features. In your fast scope you may see some slight defocus at the field edge with any of these eyepieces, so if that really bothers you, a narrower field design should be considered.
    Last edited by Trombatissimo; 06-07-2017 at 10:18 PM.
    Bigzmey likes this.

  3. #23
    Bigzmey's Avatar
    Bigzmey is offline HYPER GIANT
    Points: 40,753, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 59.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Sep 2015
    Location
    Planet Earth
    Posts
    7,545
    Points
    40,753
    Level
    100
    Thanks
    1,801
    Thanked 3,185x 2,291 Posts

    Default Re: Strategy for eye piece purchases

    I actually like the rubber shroud. It let you dial in as much or as little eyeguard as you need, provide good grip and acts to some extend as EP armor (if you drop or bump into EP by accident).

  4. #24
    Trombatissimo's Avatar
    Trombatissimo is offline HYPER GIANT
    Points: 10,686, Level: 71
    Level completed: 46%, Points required for next Level: 164
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!Gallery Achievement!Album Achievement!
    Join Date
    Feb 2017
    Location
    Montreal, Quebec, Canada
    Posts
    1,981
    Points
    10,686
    Level
    71
    Thanks
    951
    Thanked 773x 613 Posts

    Default Re: Strategy for eye piece purchases

    I agree that the Meade and Celestrons have excellent and effective shrouds which should not be removed for normal use. The ability to remove the Meade shroud to reveal a smaller diameter for binoviewing is what makes the Meade unique. All the others (TV Nagler, William Optics UWAN, or the much inferior no name Chinese 80 degree eyepiece) that are narrow enough to use unmodified in a binoviewer, are only 16mm focal lengths.
    Bigzmey likes this.

  5. #25
    Eskil's Avatar
    Eskil is offline White Dwarf
    Points: 1,478, Level: 22
    Level completed: 78%, Points required for next Level: 22
    Overall activity: 2.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!365 Days+ Registered Achievement!
    Join Date
    May 2017
    Location
    Lund, Sweden
    Posts
    44
    Points
    1,478
    Level
    22
    Thanks
    9
    Thanked 2x 2 Posts

    Default Re: Strategy for eye piece purchases

    Hmm.. I am still trying understand what is correct and what is not. So far I have ordered the Meade 5000 UWA 18mm since the reseller had ONE left and since it is not manufactured anymore I went for it.

    But for future I am still trying to figure out what is true and what is not true regarding the Hyperion Aspheric 31mm (or maybe 36mm). According to the tech specs from Baader's site, with a 1.25" focuser the deliver 72° AFOV and 30mm field stop (38 resp 45 mm field stop with the 36mm). It sure seems to me like I will have a larger FOV with that eye piece even in my scope than with for example a Celestron OMNI 32mm which claims to have a 50° FOV. Or will I be disappointed if I actually purchase the Hyperion 31mm (the 36mm gives an exit pupil of 7.2mm in my f/5 and this is too much correct?) since I will not get a larger FOV than with the Celestron?

    /Eskil

  6. #26
    Ozman13's Avatar
    Ozman13 is offline HYPER GIANT
    Points: 29,217, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 20.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    8,431
    Points
    29,217
    Level
    100
    Thanks
    170
    Thanked 2,238x 2,011 Posts

    Default Re: Strategy for eye piece purchases

    Quote Originally Posted by Eskil View Post

    But for future I am still trying to figure out what is true and what is not true regarding the Hyperion Aspheric 31mm (or maybe 36mm).

    /Eskil
    This is true according to my experience (and many others), the Hyperion does not work well in a fast scope. I would not even consider it.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    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.
    120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk BT-82XL-ED, 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    &SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

  7. #27
    Eskil's Avatar
    Eskil is offline White Dwarf
    Points: 1,478, Level: 22
    Level completed: 78%, Points required for next Level: 22
    Overall activity: 2.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!365 Days+ Registered Achievement!
    Join Date
    May 2017
    Location
    Lund, Sweden
    Posts
    44
    Points
    1,478
    Level
    22
    Thanks
    9
    Thanked 2x 2 Posts

    Default Re: Strategy for eye piece purchases

    Quote Originally Posted by Ozman13 View Post
    This is true according to my experience (and many others), the Hyperion does not work well in a fast scope. I would not even consider it.
    Exactly what is true? It does not deliver a larger FOV or it does not deliver in some other aspect?

    /Eskil

  8. #28
    Ozman13's Avatar
    Ozman13 is offline HYPER GIANT
    Points: 29,217, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 20.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    8,431
    Points
    29,217
    Level
    100
    Thanks
    170
    Thanked 2,238x 2,011 Posts

    Default Re: Strategy for eye piece purchases

    Quote Originally Posted by Eskil View Post
    Exactly what is true? It does not deliver a larger FOV or it does not deliver in some other aspect?

    /Eskil
    It does deliver a wide field of view, but only the very central portion will be clear. Most of the wide field of view will show serious distortions and be totally out of focus getting worse as you move from the central portion. It is better to have a narrower EP that is clear to the edge than a wide EP that is only clear in the center. You get more observable area with the narrower EP. The ES EPs are clear to the edge in a fast scope and are the best value.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    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.
    120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk BT-82XL-ED, 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    &SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

  9. #29
    Eskil's Avatar
    Eskil is offline White Dwarf
    Points: 1,478, Level: 22
    Level completed: 78%, Points required for next Level: 22
    Overall activity: 2.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!365 Days+ Registered Achievement!
    Join Date
    May 2017
    Location
    Lund, Sweden
    Posts
    44
    Points
    1,478
    Level
    22
    Thanks
    9
    Thanked 2x 2 Posts

    Default Re: Strategy for eye piece purchases

    I have figured as much that the ES eye pieces are highly recommended but I can only use them in 14mm and shorter with the 1.25" focuser in my scope. So in that case I guess I am stuck with something like the Celestron Omni 32mm and 50° FOV.

    /Eskil

  10. #30
    Ozman13's Avatar
    Ozman13 is offline HYPER GIANT
    Points: 29,217, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 20.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    8,431
    Points
    29,217
    Level
    100
    Thanks
    170
    Thanked 2,238x 2,011 Posts

    Default Re: Strategy for eye piece purchases

    Quote Originally Posted by Eskil View Post
    I have figured as much that the ES eye pieces are highly recommended but I can only use them in 14mm and shorter with the 1.25" focuser in my scope. So in that case I guess I am stuck with something like the Celestron Omni 32mm and 50° FOV.

    /Eskil
    The ES 24mm 68 is 1.25" and will give you the widest possible view in your scope and is clear to the edge. That is the EP I would get.
    Bigzmey likes this.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ACF 8"SCT,
    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.
    120, ES 102CF Apo triplet, ES AR102, ST100, ST90, Apex 90mm Mak, ST80, ETX60,
    Oberwerk BT-82XL-ED, 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount
    Explore Scientific 82 degree and 68 degree EPs, Baader 9mm Ortho, Meade 5000 SWA EP set, many more various EPs, Baader
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    &SkyGlow, FringeKiller, SemiApo filters, Celestron UHC, Meade 4000 Nebular Filter, Kson OIII, DGM NPB and lots of astro stuff.

 

 
Page 3 of 4 FirstFirst 1234 LastLast

Similar Threads

  1. Strategy For Beginners
    By rnorman3 in forum Astronomy Beginners Forum
    Replies: 29
    Last Post: 12-31-2014, 04:48 PM
  2. Sanity check for purchases (and not purchases), please
    By dmitchast in forum Astronomy Beginners Forum
    Replies: 7
    Last Post: 09-14-2013, 10:43 PM
  3. Poor Seeing strategy
    By John Banister in forum Amateur Astronomy Forum
    Replies: 5
    Last Post: 04-24-2011, 04:23 PM
  4. Strategy Games
    By admin in forum Off Topic Forum
    Replies: 11
    Last Post: 05-11-2010, 08:15 PM
  5. RNC Strategy At Work...
    By Perseid in forum Amateur Astronomy Forum
    Replies: 44
    Last Post: 12-01-2006, 02:48 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 10:07 AM.