Page 1 of 4 123 ... LastLast
Results 1 to 10 of 33
Like Tree6Likes

Thread: I "NEED" New Eyepieces

  1. #1
    star drop's Avatar
    star drop is offline Guilty as Charged
    Points: 14,490, Level: 82
    Level completed: 98%, Points required for next Level: 10
    Overall activity: 0%
    Achievements:
    10 Days registeredFirst 1000 Experience PointsGot three Friends20+ Friends Achievement!365 Days+ Registered Achievement!
    Join Date
    Nov 2008
    Location
    .
    Posts
    2,265
    Points
    14,490
    Level
    82
    Thanks
    11
    Thanked 473x 211 Posts

    Default I "NEED" New Eyepieces



    Almost as soon as many people decide to purchase a telescope they get this notion. Slow down and relax. Eyepiece upgrading is one of the fastest ways in this hobby to unecessarily lighten your wallet or purse. If you purchase a quality telescope it may come with some pretty decent eyepieces. USE them! And not for just a month or so but put them through their paces for months. How else will you know what you may want or expect an eyepiece to do. If you can get to a star party do so, ask questions, and look through different eyepieces in telescopes that are very SIMILAR to yours in design and focal ratio if at all possible. A telescopes focal ratio, that F/3 to F/20 number, can either make or break an eyepiece as far as performance is considered. An eyepiece that gives flawless images at F/10 might make you seasick when used in a telescope with a focal ratio of F/5. A telescope manufacturer knows this and will usually supply eyepieces that will work fine with their telescope. The eyepieces included have appropriate focal lengths and apparent fields of view with an eye on cost control.

    Now back to your specific telescope.
    For a dobsonian or other undriven mount telescope you will eventually gravitate toward the widest apparent field of view eyepieces that you can afford. The larger the telescope the more you will need them. Tracking is so much easier when you do not have to constantly nudge the telescope along to keep an object in the field of view. The wider field also enables you to see more of an object rather that just parts of it at a time.

    If you have a go-to or computerized tracking mount along with some style of good finder scope your requirements may be different from an observer using a telescope that lacks them. You might not want the ultra wide apparent field of view eyepieces but they are a nice luxury. Many people like to see an object nicely framed in the field of view. So unless you are using higher magnifications or viewing large objects you can get by with a smaller apparent field of view eyepiece.

    Observer preferences are most important. Considering eye relief, the distance between your eye and the position of the best image, is very important. Not everyone can hold their head steady unless they feel an eyepiece eyecup touching their eyelashes. Others may need to wear their eyeglasses. If you observe in the winter where it really gets cold then an eyepiece with short eye relief will tend to fog up faster. Being very close to the metal barrel with your face can lead to parts of your skin freezing to the eyepiece. Your first reaction in such a case is to pull back quickly. Either you loose a bit of skin or the telescope follows you along. Not fun.

    Do you like the immersive or spacewalk feeling? A large eye lens on the eyepiece can make a difference here even if the apparent field of view is 45 degrees. For real "falling into the telescope views" however eyepieces with apparent fields of view of 68░, 82░, and 100░ are available. Some people complain about the wasted field of view that they paid for when they cannot see the inside of the eyepiece field stop or barrel. That is a valid point if it bothers one. Personally when I go to look out a window and can't see the sill it does not bother me. It probably is dusty anyways.

    Eyepiece sets or kits. That notion makes me shudder. Sometimes all the eyepieces in a manufacturers line up will perform identically, sometimes not. Several manufacturers market very nice kits at very very nice pocket emptying prices. Good stuff in those kits for sure. But most times a kit is marketed to sell to a wide group of users. If you have a large telescope, where the seeing can greatly affect your range of commonly useful magnifications, or a smaller telescope with a long focal ratio the short focal length eyepieces may sit in the box for years on end. For a telscope with a focal ratio around F/4 a 32mm or longer focal length eyepiece will be of little use. Value enhanced goodies in the kit? To me all those colored filters and lens cloths in the kits are like the giant box of crayons you got with 32 different colors when you were a kid. You only scribbled on the wall with the red and green ones.

    So by exhaustively using the eyepieces that you have and trying other types at star parties you should be able to avoid going through many cycles of purchase, use, and sell.
    Read the various eyepiece reviews and pay particular attention to the eyepiece attributes that mean the most to you. Also pay particular attention to the focal ratio of the telescopes being used in the review. If you cannot try out other eyepieces rest assured that the ones made by the top end manufacturers will most likely work very well in your telescope. If you are planning to stay in the hobby for a long time then in my humble opinion it is better to save up for a few good eyepieces rather than getting several boxes of mediocre ones. Three eyepieces and a barlow or five eyepieces without a barlow should satisfy most everyones needs.
    rhliberman and mrlaroo like this.

  2. The Following 75 Users Say Thank You to star drop For This Useful Post:

    + Show/Hide list of the thanked

    abhijeet (02-16-2010),admin (09-14-2009),Agent420 (01-29-2010),Alberta_EMT (01-28-2011),ANDBEYOND (03-15-2009),AnnaMo (06-06-2010),Apollo522 (05-23-2011),BABOafrica (05-19-2011),Baskerv (05-15-2009),batheyedoc (11-18-2011),Briddie (01-20-2013),Christo (03-17-2012),Commanderz (09-27-2010),Creasey3 (11-18-2012),DapperFattyCobalt (03-10-2012),darkskies (11-30-2009),DaveV (08-03-2011),DigitalNinja (10-02-2009),DizzyGazer (03-05-2009),dmbryan (07-29-2009),Downtoearth (09-28-2011),ebidar (08-26-2009),ebusinesstutor (12-12-2009),echinaceablue (04-12-2010),EMarkM (02-27-2011),FatherGuse (03-05-2009),gmssms (10-05-2010),heatmizer (03-05-2009),Iceman1976za (06-24-2009),j.gardavsky (03-11-2013),Jazza11 (04-04-2009),jblather (03-05-2011),JDFlood (03-08-2009),jgroub (08-03-2014),johnkirkpatrick (04-12-2010),Kevin Z (09-14-2009),LazyEyepiece (08-09-2009),Lola Bruce (01-07-2014),Magnetar (11-29-2009),MihaiR (08-25-2014),Mike Rapley (08-05-2009),Mokudo (12-24-2011),Moonrider (02-04-2012),m_csquare (03-13-2012),Neophyte_Astronomer (10-14-2009),Nodgiles (03-04-2009),novanz (01-01-2011),Nuclear Tan (09-02-2009),panhard (06-10-2009),pch (01-29-2013),PiperKev (12-28-2009),porkchopsisgood (11-25-2010),powerwindows1985 (03-04-2009),RichardM (01-17-2011),rollyro (03-14-2012),rory (03-22-2011),roverich (03-05-2009),rudy35 (08-25-2010),RussL (03-05-2009),rwsandy (10-01-2010),sketrip (07-06-2015),stevem (04-26-2011),TambourineMan (03-04-2009),TCA (04-12-2009),Tombstone17 (10-23-2009),TomInJax (11-22-2012),Tragik78 (10-03-2011),turing test (05-04-2011),TVRRMAN (12-10-2013),TxAlien (04-13-2013),Wafer22 (03-06-2012),warmvet (11-12-2010),WWPierre (09-14-2009),zanshin0212 (02-18-2011),zubero (12-09-2012)

  3. #2
    FatherGuse's Avatar
    FatherGuse is offline HYPER GIANT
    Points: 14,603, Level: 83
    Level completed: 30%, Points required for next Level: 247
    Overall activity: 0%
    Achievements:
    Got three Friends20+ Friends Achievement!First 1000 Experience Points365 Days+ Registered Achievement!200+ Posts Achievement!
    Join Date
    Nov 2008
    Location
    Tarheel State, USA
    Posts
    2,027
    Points
    14,603
    Level
    83
    Thanks
    185
    Thanked 187x 147 Posts

    Default

    ... that's a good post Ted ... thanks man ...

    ... though I must admit ... I tend to be a "collector" I guess, or "toy-junkie" if anyone prefers ... I've been buying up some of the middle-of-the-road gear (mostly EPs) and playing around with them ... some of the stuff, by today's standards, is absolute junk ... kinda fun and a hobby in (and of) itself ... some of it can absolutely make you stark raving mad, but it will get you in touch with your "inner-Galileo" or "inner-Messier" ... lol ... I even find myself "digressing" and using some of the absolute "astro-junk" scopes (by comparison only to the higher-end stuff ... not meant as an economic slur or derogatory statement) and enjoying the challenge of using it/them ... though I still won't compromise on a mount ... lol ... that's just asking for pain ...

    ... in addition to "Hubblitis" I also have "Collectivitis" ... though it is kinda neat to sit there with several varieties of EP at the same power and try each one ... heh heh ... I should probably even start taking notes some day ... yeesh ...

    ... you are correct sir ... I don't "need" them ... but they are fun to play with ... and I do get your point, "Don't go out and spend your bucks on stuff you don't NEED" ... certainly a very valuable (pun intended) lesson for everyone actually trying to get the best performance and bang-for-the-buck ... often the only real benefit of a kit is the case it comes in ...

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

    Bill - "Recreational 'Stronomer" and "Astro-Junk User" ... EGO lego , proinde EGO operor ...

    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.

  4. #3
    powerwindows1985's Avatar
    powerwindows1985 is offline Baseball Geek
    Points: 15,762, Level: 86
    Level completed: 61%, Points required for next Level: 138
    Overall activity: 0%
    Achievements:
    10 Days registeredFirst 1000 Experience PointsGot three Friends100+ Threads Achievement!250+ Threads Achievement!
    Join Date
    Aug 2008
    Location
    South Dakota
    Posts
    1,515
    Points
    15,762
    Level
    86
    Thanks
    194
    Thanked 299x 233 Posts

    Default

    Well said Ted. I was awefully tempted to buy several eyepieces right away. Glad I didn't. Used the two it came with for over a year. Added a Barlow. Finally got a new eyepiece a couple of months ago. I actually only plan on one or two more eyepieces and I should be good.

  5. #4
    roverich's Avatar
    roverich is offline Moderator
    Points: 41,419, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    Got three Friends20+ Friends Achievement!First 1000 Experience Points5+ Referrals Achievement!100+ Threads Achievement!
    Join Date
    Jan 2009
    Location
    virginia .usa
    Posts
    7,913
    Points
    41,419
    Level
    100
    Thanks
    2,009
    Thanked 1,962x 1,528 Posts

    Default

    Thanks for that post ted . It is very informative . I am like bill though . I have collectivitis..I just LOVE meade products .
    16in Night sky
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    F4.5 , 90mm refractor 500mm FL , 7in
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    classic Big-mac , Meade eye pieces with a few odd balls thrown in ...
    If you cant stand behind the american soldier ,
    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.
    Please stand in front of one ...

  6. #5
    fastdogs's Avatar
    fastdogs is offline White Dwarf
    Points: 7,481, Level: 60
    Level completed: 66%, Points required for next Level: 69
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points365 Days+ Registered Achievement!750 Days+ Registered Achievement!Visitor Messenger Achievement!1000 Days+ Registered Achievement!
    Join Date
    Feb 2009
    Location
    st. louis
    Posts
    25
    Points
    7,481
    Level
    60
    Thanks
    4
    Thanked 2x 2 Posts

    Default

    Ok, I will admit it, I got one of those celestron eyepiece kits. I like the case to keep the two that came with my scope in, though.
    The bad thing is when you buy a scope and it's cloudy for days on end right after. Then, I tend to go shopping- since I can't use the scope, I go shopping for the scope.
    vickie
    stepping beyond likes this.

  7. #6
    RussL's Avatar
    RussL is offline Guest
    Points: 15,907, Level: 87
    Level completed: 2%, Points required for next Level: 343
    Overall activity: 0%
    Achievements:
    Got three Friends20+ Friends Achievement!First 1000 Experience Points5+ Referrals Achievement!100+ Threads Achievement!
    Join Date
    Nov 2008
    Location
    Cayce, South Carolina
    Posts
    1,931
    Points
    15,907
    Level
    87
    Thanks
    220
    Thanked 353x 209 Posts

    Default

    Well said, Ted. And true. I believe my time has come for a couple of eyepieces. I have survived for many years with no more than the three Ramsdens that came with my RV6 Dynascope back in 1963. Last year I inherited my dad's Celestar 8 which came with a 25mm Kellner (not bad) and the 40mm and 7.5mm Sirius Plossls that Dad bought. He also got a Celestron Ultima 2x Barlow. I have gotten by with these with the scopes I have, but now want a couple of replacements. As a result, I have been studying the very things you talked about for some time now, trying to make up my mind. Without the Barlow, I could live with four eyepieces, one being probably a 35mm just for special purposes. Otherwise, just low, medium, and high are all I want (ok, maybe two mediums).

  8. #7
    Permafrost's Avatar
    Permafrost is offline Banned
    Points: 8,054, Level: 62
    Level completed: 68%, Points required for next Level: 96
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!First 1000 Experience Points750 Days+ Registered Achievement!2 Posts Achievement50 Posts Achievement!
    Join Date
    Feb 2009
    Location
    Montreal, Canada 45.54N 73.7W
    Posts
    99
    Points
    8,054
    Level
    62
    Thanks
    37
    Thanked 18x 14 Posts

    Default

    Thx for the informative post Ted!

    I'm pretty much a new owner of an Orion XT10 dob and I'm in the process of some mega researching as to what Eyepieces I should get, not to mention which should be my frist. I currently have 2 stock Orion Sirius Plossls (10 & 25mm) but I'm not to sure about those and there 50o Field of View.

    One thing for sure, I am getting a Powermate 2x 2" because I think it will make a good investment over the coming years for me.

    Now as for Eyepeices, I'm totally confused. I'm bending towards Baader Hyperion 8-24mm Zoom with or without focus rings, William Optics Ultra Wide Angle EP's with 82o Field of View or just flat out Tele Vue Naglars or even Ethos.

    If I had a powermate, and love observing Planets in their finest detail and as close as possible, same thing for the moon and sun (with baader solar filter) which EP would you recommend? What mm length?

    That would be my first EP. Than I'd probably get a 30-40mm one, and maybe afterwards a 13-17mm one.

    Can you give me some advice on which should be my first EP?

  9. #8
    lamphater's Avatar
    lamphater is offline Guest
    Points: 8,994, Level: 65
    Level completed: 82%, Points required for next Level: 56
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points365 Days+ Registered Achievement!200+ Posts Achievement!Visitor Messenger Achievement!750 Days+ Registered Achievement!
    Join Date
    Jan 2009
    Location
    the tolerant state of Mississippi
    Posts
    229
    Points
    8,994
    Level
    65
    Thanks
    76
    Thanked 43x 27 Posts

    Default

    Permafrost,

    The first eyepiece I got for my 10"DOB was the Celestron 19mm Axiom LX, fully multi-coated-82o filed of view. 2" size. Then I got the 2" GSO fully multi coated 2x ED barlow.

    I am very happy with both.

    I barlow the 10mm that came with my scope (the barlow has the 1.25 adapter) to look at planets.

    Pentax makes a 5mm XW-SMC that works great with the DOB. It was expensive but worth it.

    I do think you can spend alot less and be just as happy.

  10. The Following User Says Thank You to lamphater For This Useful Post:

    Nates (01-31-2010)

  11. #9
    lamphater's Avatar
    lamphater is offline Guest
    Points: 8,994, Level: 65
    Level completed: 82%, Points required for next Level: 56
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points365 Days+ Registered Achievement!200+ Posts Achievement!Visitor Messenger Achievement!750 Days+ Registered Achievement!
    Join Date
    Jan 2009
    Location
    the tolerant state of Mississippi
    Posts
    229
    Points
    8,994
    Level
    65
    Thanks
    76
    Thanked 43x 27 Posts

    Default

    Also-

    Your scope handles well up to 300X

    your focal lenght is 1200

    Divide the eyepiece MM into 1200 and you get the Magnification.

    A 4MM Eyepiece would get you 300X Magnification - planets move across the eyepiece fast at that Magnification so wide field of views are nice.

    I barlowed my Pentax 5mm and saw the moon with the same scope you have @ 480X and it was still very crisp. It was amazing I felt as if I was hovering over the surface in a spacecraft a few miles from the surface. When I try the same magnification on Saturn not so good focus and very dim.

  12. #10
    ghlo08's Avatar
    ghlo08 is offline Banned
    Points: 7,400, Level: 60
    Level completed: 25%, Points required for next Level: 150
    Overall activity: 0%
    Achievements:
    First 1000 Experience Points5+ Referrals Achievement!365 Days+ Registered Achievement!750 Days+ Registered Achievement!2 Posts Achievement
    Join Date
    Apr 2008
    Location
    Los Angeles, CA.
    Posts
    13
    Points
    7,400
    Level
    60
    Thanks
    0
    Thanked 4x 3 Posts

    Default

    Great read

 

 
Page 1 of 4 123 ... LastLast

Similar Threads

  1. 2" vs 1.25" eyepieces for 8" CST ... worth the extra cost?
    By Rick S. in forum Telescope Eyepieces Forum
    Replies: 10
    Last Post: 08-26-2012, 01:15 AM
  2. Good eyepieces for 5"-8" Reflectors
    By Reflector? in forum Astronomy Beginners Forum
    Replies: 6
    Last Post: 02-08-2011, 10:36 PM
  3. "Primative" focusers and eyepieces?
    By BenM in forum ATM DIY Telescope Making Forum
    Replies: 3
    Last Post: 01-22-2011, 06:21 AM
  4. "Upgrading" power with eyepieces?
    By cmcfalls in forum Astronomy Beginners Forum
    Replies: 8
    Last Post: 01-29-2010, 06:13 PM
  5. Using 1.25" Filters with .965" Eyepieces?
    By Edward in forum Amateur Astronomy Forum
    Replies: 6
    Last Post: 07-29-2003, 04:53 PM

Tags for this Thread

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 10:44 PM.