Page 1 of 3 123 LastLast
Results 1 to 10 of 21
Like Tree18Likes

Thread: Help with first time buying eyepieces.

  1. #1
    scotth's Avatar
    scotth is offline White Dwarf
    Points: 115, Level: 2
    Level completed: 30%, Points required for next Level: 35
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Jan 2019
    Location
    Charleston, SC
    Posts
    7
    Points
    115
    Level
    2
    Thanks
    11
    Thanked 0x 0 Posts

    Default Help with first time buying eyepieces.



    Hello all, I'm brand new to the forum, and band new to amateur astronomy, having received a surprise gift of a Celestron Nexstar 5SE for Christmas. I've only tried to observe for a brief period as we have had nothing but clouds since Christmas. I was impressed by the very bright Moon and underwhelmed by trying to see any DSO or Mars. I have since done enough research and realized how silly I was to look straight at the bright moon and my phone and then try to see fainter M objects!

    Anyway, with all of these cloudy nights, I have dived into researching what eyepieces I should buy first to improve my observing experience and boy is it overwhelming and difficult to choose.

    First, although it is always tempting to me to try to start with something that won't need to be upgraded if I can, I feel like I have to set a budget of <$100 per eyepiece.

    To me, it seems like it would be a good first step to get two eyepieces, one with greater magnification for planetary/lunar viewing and one for DSOs. However, all of the different recommendations for different types and brands are rather overwhelming.

    I keep reading that orthos are great (best?) for the value for planetary viewing, but it seems that options are more limited now than several years ago. Still, would something like the Baader classic Ortho at 10mm or perhaps the 18mm with a 2x Barlow to preserve some eye relief and increase my effective eyepiece count be a good choice?

    For a DSO choice I am a little more confused about what to choose. I guess I can't get anywhere near the minimum mag of my scope without severe vignetting, but I'm not sure exactly where the cutoff is. It seems like 32mm is a popular cutoff. Or is it worth getting something in a closer focal length to my stock eyepiece with a better quality or FOV instead?

    TL;DR - Looking for a recommendation of two eyepieces each under $100 and possibly a Barlow to get me started with a Nexstar 5SE. For a newbie who doesn't know what he prefers in an eyepiece or in observing. To help get a good idea with a better range of observing experiences than my single stock eyepiece will allow.
    j.gardavsky and geethq like this.

  2. #2
    scotth's Avatar
    scotth is offline White Dwarf
    Points: 115, Level: 2
    Level completed: 30%, Points required for next Level: 35
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Jan 2019
    Location
    Charleston, SC
    Posts
    7
    Points
    115
    Level
    2
    Thanks
    11
    Thanked 0x 0 Posts

    Default Re: Help with first time buying eyepieces.

    Sorry, I forgot to include that the eyepiece that came with the scope is the Celestron 25mm Plossl.

  3. #3
    helicon64's Avatar
    helicon64 is offline Indy the cat
    Points: 131,138, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.7%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!Ghost Achievement! Averaging 5+ posts a day!200+ Posts Achievement!
    Awards:
    Most Friends Award!
    Join Date
    Jul 2012
    Location
    Berkeley, CA
    Posts
    22,193
    Points
    131,138
    Level
    100
    Thanks
    23,162
    Thanked 6,751x 5,297 Posts

    Default Re: Help with first time buying eyepieces.

    I would recommend just observing with the eyepieces that came with the scope for a bit and then gradually add in more eyepieces to fulfill specific needs. Until you get some observing under your belt it will be difficult to sort through all of the options available to you. Luckily your scope is f/10 (I believe) so fairly forgiving with eyepieces and a wide range of eyepieces can be used effectively. In contrast, a short focal length Dob can require really good (expensive) eyepieces. Plossls should be fine with your scope as well as orthos in the higher magnifications, in any case these are not very expensive eyepieces. As far as which make/model of eyepiece I'll leave that to other folks to chime in. Congrats on the new scope as well.
    craigwithers likes this.
    Michael
    Obsession 18" f/4.2, Zhumell Z10 f/4.9, ES AR 152 refractor f/6.5, Celestron Skymaster 15x70's , Bushnell 10x50's
    9x50mm RACI finder, Telrad, Rigel Quickfinder, 30mm Erfle, 9mm Plossl, and full line of ES eyepieces
    Imagination is more important than knowledge. Knowledge is Limited. Imagination Circles the World... A. Einstein


  4. The Following User Says Thank You to helicon64 For This Useful Post:

    scotth (01-05-2019)

  5. #4
    Piet Le Roux's Avatar
    Piet Le Roux is offline Bright Giants
    Points: 2,325, Level: 31
    Level completed: 17%, Points required for next Level: 125
    Overall activity: 3.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!365 Days+ Registered Achievement!
    Join Date
    Nov 2017
    Location
    Bloemfontein South Africa
    Posts
    272
    Points
    2,325
    Level
    31
    Thanks
    12
    Thanked 44x 42 Posts

    Default Re: Help with first time buying eyepieces.

    Your scope has a focal length of 1250mm so with the 25mm plossl you got will give a magnification of 50(1250/25), the Plossl should have a apparent field(AFOV) of view of about 50 degrees so your field of view (FOV) with the 5SE is about 1 degree (AFOV/magnification) so you can see most of M42 in Orion. I am doing the maths so you can see what all these values mean. An more expensive eyepies than a Plossl with a AFOV of lets say 68 degrees and a focal length of 20 mm would have a magnification of 62.5 and a FOV, with the 5SE, of 1.088 degrees : nearly the same view but with more magnification : you would see the same part of M42 but more detail. Another consideration is eye relief : this is the maximum distance that your eye can be from the eyepiece and if you wear glasses anything less than 12mm will be uncomfortable. Eyepieces with a bigger AFOV has longer eye relief but are normally more expensive. At this stage magnification will be important to you but too much will make the view distorted and very dim : a safe rule of thumb is to not go smaller than your aperture in inches : so 5" = 5mm that will give you a magnification of 1250/5 = 250. Don't generalise the focal length of eyepieces because 32mm will have a magnification of 39 in your scope but a 62 magnification in a scope with a 2000mm focal length: nearly double. Long focal length eyepieces has a wider field of view but less magnification. with a good AFOV you could get a wide view with good magnification.
    good luck
    Last edited by Piet Le Roux; 01-05-2019 at 08:13 PM.
    MonkeyBoy likes this.
    One year of astronomy and totally hooked!
    Equipment : 15" Obsession F4.5 Classic, Tele Vue 1.25" 7&13mm Nagler, Tele Vue 2" 27mm Panoptic, Tele Vue Big
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , Tele Vue Paracorr II : 8" Meade LX90ACF with Meade 2.0" Enhanced Diagonal, Baarder Hyperion MK III 24-8mm zoom and 2" 40mm Astromania Kellner

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

  6. The Following User Says Thank You to Piet Le Roux For This Useful Post:

    scotth (01-05-2019)

  7. #5
    craigwithers's Avatar
    craigwithers is offline Main Sequence
    Points: 3,530, Level: 39
    Level completed: 20%, Points required for next Level: 120
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!365 Days+ Registered Achievement!750 Days+ Registered Achievement!First 1000 Experience Points
    Join Date
    Nov 2014
    Location
    South Australia
    Posts
    54
    Points
    3,530
    Level
    39
    Thanks
    40
    Thanked 10x 9 Posts

    Default Re: Help with first time buying eyepieces.

    You have a great scope, very nice gift for Christmas. My first scope was a Celestron C5 spotting scope which is the same as yours, without the Sky Align Alignment Technology etc. I found the best eyepiece for my old scope,for a bit over$100 was the Tele Vue 32mm Plossi. You may have to go over the $100 mark to get a better eyepiece, people talk well of the Explore Scientific 68 Series.
    Piet Le Roux likes this.

  8. The Following User Says Thank You to craigwithers For This Useful Post:

    scotth (01-06-2019)

  9. #6
    Piet Le Roux's Avatar
    Piet Le Roux is offline Bright Giants
    Points: 2,325, Level: 31
    Level completed: 17%, Points required for next Level: 125
    Overall activity: 3.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!365 Days+ Registered Achievement!
    Join Date
    Nov 2017
    Location
    Bloemfontein South Africa
    Posts
    272
    Points
    2,325
    Level
    31
    Thanks
    12
    Thanked 44x 42 Posts

    Default Re: Help with first time buying eyepieces.

    Quote Originally Posted by Piet Le Roux View Post
    Your scope has a focal length of 1250mm so with the 25mm plossl you got will give a magnification of 50(1250/25), the Plossl should have a apparent field(AFOV) of view of about 50 degrees so your field of view (FOV) with the 5SE is about 1 degree (AFOV/magnification) so you can see most of M42 in Orion. I am doing the maths so you can see what all these values mean. An more expensive eyepies than a Plossl with a AFOV of lets say 68 degrees and a focal length of 20 mm would have a magnification of 62.5 and a FOV, with the 5SE, of 1.088 degrees : nearly the same view but with more magnification : you would see the same part of M42 but more detail. Another consideration is eye relief : this is the maximum distance that your eye can be from the eyepiece and if you wear glasses anything less than 12mm will be uncomfortable. Eyepieces with a bigger AFOV has longer eye relief but are normally more expensive. At this stage magnification will be important to you but too much will make the view distorted and very dim : a safe rule of thumb is to not go smaller than your aperture in inches : so 5" = 5mm that will give you a magnification of 1250/5 = 250. Don't generalise the focal length of eyepieces because 32mm will have a magnification of 39 in your scope but a 62 magnification in a scope with a 2000mm focal length: nearly double. Long focal length eyepieces has a wider field of view but less magnification. with a good AFOV you could get a wide view with good magnification.
    good luck
    NB Sorry I got it wrong! I confused F stop and Aperture : The rule of thumb, of magnification is to not go smaller than your F ratio in your case it's F10 so don't, at first, go below a 10mm eyepiece that would give you a 125 magnification...where are the Moderators when you need them ?!
    One year of astronomy and totally hooked!
    Equipment : 15" Obsession F4.5 Classic, Tele Vue 1.25" 7&13mm Nagler, Tele Vue 2" 27mm Panoptic, Tele Vue Big
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , Tele Vue Paracorr II : 8" Meade LX90ACF with Meade 2.0" Enhanced Diagonal, Baarder Hyperion MK III 24-8mm zoom and 2" 40mm Astromania Kellner

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

  10. The Following User Says Thank You to Piet Le Roux For This Useful Post:

    scotth (01-06-2019)

  11. #7
    j.gardavsky's Avatar
    j.gardavsky is offline Super Moderator
    Points: 106,652, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 99.5%
    Achievements:
    Ghost Achievement! Averaging 5+ posts a day!200+ Posts Achievement!400+ Posts AchievementFirst 1000 Experience Points365 Days+ Registered Achievement!
    Join Date
    Feb 2011
    Location
    Germany
    Posts
    13,956
    Points
    106,652
    Level
    100
    Thanks
    13,791
    Thanked 8,444x 5,517 Posts

    Default Re: Help with first time buying eyepieces.

    Quote Originally Posted by scotth View Post
    ...

    I keep reading that orthos are great (best?) for the value for planetary viewing, but it seems that options are more limited now than several years ago. Still, would something like the Baader classic Ortho at 10mm or perhaps the 18mm with a 2x Barlow to preserve some eye relief and increase my effective eyepiece count be a good choice?

    For a DSO choice I am a little more confused about what to choose.
    ...
    Hello Scott,

    my choices and opinions about the EPs certainly differ from the main stream,
    but myself, I can't live without the Baader BCO 10mm, whenever the magnification is the right one for a particular DSO.
    The BCOs are thanks to their HT multicoatings high performers in the category of the transmissivity of light,
    and of contrast.

    Unless you are going to spend a fortune on the quality wide field and ultrawide field eyepieces for the DSOs,
    the best choice is Tele Vue Plössls, or some orthos (BCO, KK Fujiyama, ...).

    As I get just a few planetary and Moon observing sessions per season, I can't tell you what's the best to take for the planets, I take just what I have, often using a Baader VIP Barlow, or the zoom eyepieces to tune the best magnification given the seeing conditions.

    Hoping this helps,

    JG
    Piet Le Roux likes this.
    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.

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

    scotth (01-06-2019)

  13. #8
    scotth's Avatar
    scotth is offline White Dwarf
    Points: 115, Level: 2
    Level completed: 30%, Points required for next Level: 35
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Jan 2019
    Location
    Charleston, SC
    Posts
    7
    Points
    115
    Level
    2
    Thanks
    11
    Thanked 0x 0 Posts

    Default Re: Help with first time buying eyepieces.

    Thanks for all of the input so far. Still mulling it over.

    My wife wears glasses. Does that mean that high power orthos and plossls are essentially unusable for her and that I would be better off getting the 18mm Ortho with a Barlow to preserve a useable eye relief or just using a Barlow with my 25mm Plossl? Or, is there a better option for glasses-usable eye relief around 10mm focal length?
    Last edited by scotth; 01-06-2019 at 11:08 PM.
    j.gardavsky likes this.

  14. #9
    Ozman13's Avatar
    Ozman13 is online now HYPER GIANT
    Points: 27,039, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 18.0%
    Achievements:
    2 Posts Achievement5 Threads Achievement!20 Posts Achievement!365 Days+ Registered Achievement!50 Posts Achievement!
    Join Date
    Jun 2013
    Location
    Hopkinsville Kentucky
    Posts
    7,811
    Points
    27,039
    Level
    100
    Thanks
    161
    Thanked 2,094x 1,874 Posts

    Default Re: Help with first time buying eyepieces.

    If she suffers from astigmatism, then she will need to observe with her glasses on and will need generous eye relief. If it is just near/far sightedness, then she can observe with her glasses off and can focus the scope to her vision sans glasses.
    j.gardavsky 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.
    , Celestron C6A SCT,
    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 25x100s, 15x70s, 8x56s, Kasai 2.3x40s, Celestron AVX, CG4, SLT, LCM, Obie HD Parallel Bino mount, Canon T5, Meade DSI2 Pro, Phillips cam, Explore Scientific 30mm, 24mm, 18mm, 14mm, 11mm, 8.8mm, 6.7mm 82 degree EPs, ES 24mm, 20mm, 16mm 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.

  15. The Following User Says Thank You to Ozman13 For This Useful Post:

    scotth (01-07-2019)

  16. #10
    scotth's Avatar
    scotth is offline White Dwarf
    Points: 115, Level: 2
    Level completed: 30%, Points required for next Level: 35
    Overall activity: 13.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!
    Join Date
    Jan 2019
    Location
    Charleston, SC
    Posts
    7
    Points
    115
    Level
    2
    Thanks
    11
    Thanked 0x 0 Posts

    Default Re: Help with first time buying eyepieces.

    Man, I was playing around on Agena and added the 18mm BCO and the 32mm BCP along with the Q-Barlow, which totaled $217.

    I thought that was a little steep so I was thinking of just getting the 32mm BCP and Q-Barlow, which I think would give me effective focal lengths of 32mm, 25mm, 14mm and 11mm and only cost $140.

    Then I realized there is a set including the Q-Barlow, the 32mm Plossl, and the 18mm, 10mm, and 6mm orthos for only $207!

    Is that deal too good to pass up or a little overboard for me considering I've only a couple observation sessions under my belt?

    Would I even be able to really use the 6mm or is that too small an exit pupil? Is there an advantage to having a dedicated 10mm Ortho vs using the 2.25x Barlow on my 25mm Plossl?

    Hmm....
    j.gardavsky likes this.

 

 
Page 1 of 3 123 LastLast

Similar Threads

  1. Where would you recommend buying good eyepieces and stuff.
    By jackangus in forum Astronomy Beginners Forum
    Replies: 3
    Last Post: 05-22-2015, 02:03 AM
  2. Buying Explore Scientific Eyepieces ??????
    By dougscope in forum Telescope Eyepieces Forum
    Replies: 14
    Last Post: 07-13-2012, 07:58 PM
  3. Best resource for buying eyepieces online?
    By fenguin in forum Astronomy Beginners Forum
    Replies: 10
    Last Post: 04-19-2012, 11:43 PM
  4. Buying new eyepieces for Orion telescope - suggestions?
    By sedativechunk in forum Telescope Eyepieces Forum
    Replies: 6
    Last Post: 11-19-2009, 11:09 AM
  5. buying some eyepieces
    By Greg in forum UK Astronomy Forum
    Replies: 0
    Last Post: 08-31-2003, 08:03 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 06:14 AM.