Page 1 of 3 123 LastLast
Results 1 to 10 of 26
Like Tree14Likes

Thread: Barlow lens help

  1. #1
    efoyt's Avatar
    efoyt is offline White Dwarf
    Points: 121, Level: 2
    Level completed: 43%, Points required for next Level: 29
    Overall activity: 0%
    Achievements:
    2 Posts Achievement
    Join Date
    Dec 2013
    Location
    maine
    Posts
    8
    Points
    121
    Level
    2
    Thanks
    1
    Thanked 0x 0 Posts

    Default Barlow lens help



    Ok...i have a few questions about Barlow lenses? I just purchased an Astromaster 130eq from Costco. I I’ve read a lot of good and a lot of bad about it but for the price I decided that it was the direction I would go in over the star blast 4.5. I kept saying that if I add a little more money I could get….anyways that never stops and you go from the 150 dollar range to the 250 dollar range to the 350 dollar range very quickly. So I know I don’t have a perfect scope coming but I so it as the best bang for the buck. The scope is going to be a x-mas gift for my kids…7, 5, and 4. I plan on it being something we do together not something I set them lose with (I got them a microscope last year and they have done well with it). It comes with two lenses and a lens set with another two lens plus 3 filters. My question is do I need a Barlow lens for this to be a worthwhile scope? And secondly how do I pick out a Barlow lens if I need one. I’ve found them on eBay for around 20.00 and I think they start for around 50 on amazon. Thanks

  2. #2
    OleCuss's Avatar
    OleCuss is offline Curmudgeon
    Points: 61,826, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 38.0%
    Achievements:
    200+ Posts Achievement!First 1000 Experience Points400+ Posts Achievement365 Days+ Registered Achievement!Got three Friends
    Join Date
    Oct 2010
    Location
    Central California, USA
    Posts
    12,089
    Points
    61,826
    Level
    100
    Thanks
    2,214
    Thanked 5,446x 3,560 Posts

    Default Re: Barlow lens help

    Welcome to the forum!

    If I might be so bold, please don't buy anything else quite yet. It is better to explore with what you have for a few weeks or months, join an astronomy club and go learn what you like/want/need - and then consider other eyepieces, Barlows, doodads.

    You are much more likely to avoid wasting money that way.
    BobDob, larrywalls and Alpha Tauri like this.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    XX12G and XT8; 10 inch LX200GPS;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    8SE; Tele Vue NP-101is (Petzval apochromat); Meade LS-8; WO GT-71; AVX and Losmandy G-11 mounts.

  3. #3
    Slymin's Avatar
    Slymin is offline HYPER GIANT
    Points: 19,298, Level: 95
    Level completed: 99%, Points required for next Level: 2
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Oct 2012
    Location
    USA
    Posts
    1,738
    Points
    19,298
    Level
    95
    Thanks
    203
    Thanked 461x 382 Posts

    Default Re: Barlow lens help

    Hey there! Welcome to the forum. Nice job getting your kids a microscope. I wish I had one!

    The 130 EQ is a nice scope with about a 5" aperture that will give you some nice views. What a barlow lens does is it doubles your focal length, and consequentially doubles your 'magnification'.

    I have had experience with this telescope. The moon and Jupiter (maybe) will be about the only things that would benefit from a barlow in that telescope. When you attach a barlow the telescope is much more difficult to focus, and the slightest vibration will make your field of view shake pretty good. However, I think the moon looked really good in that telescope with a barlow lens and Jupiter was just okay. Once you start viewing Saturn the brightness has dcreased enough that it isn't worth the extra magnification. A barlow lens cuts your brightness down to 1/4 of what it was I believe. It is really your call if you want to use one or not, and they are pretty cheap. I am not a big fan because of the decreased brightness and occasional shaky views and I prefer a less 'zoomed in view'. Other people really enjoy them and others are not big fans. Really it is up to you. I hope this helped!
    larrywalls likes this.

  4. #4
    gazer56's Avatar
    gazer56 is offline Main Sequence
    Points: 3,221, Level: 37
    Level completed: 14%, Points required for next Level: 129
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points
    Join Date
    Sep 2013
    Location
    N.B. Canada
    Posts
    65
    Points
    3,221
    Level
    37
    Thanks
    32
    Thanked 15x 13 Posts

    Default Re: Barlow lens help

    Hi and welcome to the forum!Your children are still young and may not take to the hobby.For the moment use what you have and you will see from there what might interest them.If they progress over time, well then you can pluck your cash down on an easy to use dob(which I should of done),then the whole family can join in.Hope this helps.
    Celestron Omni XLT 150 mm newtonian,CG-4
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    ,,Celestron X-Cel LX 7 mm ,18 mm,5mm
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    Stratus, Orion
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    25mm Plossl, skymaster 15x70 binocular,
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    NexStar 80 GLT refractor, 5mw orion green laser pointer
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  5. #5
    sada's Avatar
    sada is offline Banned
    Points: 16,750, Level: 89
    Level completed: 43%, Points required for next Level: 200
    Overall activity: 0%
    Achievements:
    5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!Ghost Achievement! Averaging 5+ posts a day!400+ Posts Achievement
    Join Date
    Mar 2012
    Location
    Glasgow/Scotland
    Posts
    4,437
    Points
    16,750
    Level
    89
    Thanks
    204
    Thanked 1,002x 963 Posts

    Default Re: Barlow lens help

    Barlows do take some of the brightness away but am a fan of them,as well as letting you zoom in on your target it also let's you use higher fl ep that are far more comfortable to use.am a big fan of the 20mm ep but its not that powerful but if i use a x2 or x3 barlow then i can keep using my 20mm & zoom in on my target! but ole has a good point,get to know your scope 1st!

  6. #6
    RichM63's Avatar
    RichM63 is offline Bright Giants
    Points: 2,807, Level: 34
    Level completed: 38%, Points required for next Level: 93
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Sep 2013
    Location
    Brittany
    Posts
    346
    Points
    2,807
    Level
    34
    Thanks
    63
    Thanked 77x 65 Posts

    Default Re: Barlow lens help

    First, welcome aboard.

    With kids of your ages + me a newbie at 50 the thing that pleases most is being able to see a group of related objects, the spread of a cluster, a galaxy, the whole of the moon in detail.

    This gives understanding and for kids entertainment, which keeps things alive.

    A reducing Barlow could easily mean that instead of being blown away by the Pleiades or a Luna landscape they are only seeing one tiny bit in fairly poor detail.

    You have already done a great thing in that you have ordered a decent bit of kit that you can all use and it does not require dexterous thumbs.

    Dad and kids freezing outside whilst going WOW, what could be better.

    + for free, you can plan stuff by using free Stellarium software and get them involved on a PC level (which always goes well with modern kids)

    So if your scope is not delivered with a Barlow, don't worry about it, mine is still in the box. (after trying it out).

    All the best,
    Rich
    Reflector SkyWatcher 200P NEQ5, Sky-Watcher 150/750 NEQ3 + RA/DEC motors, AstroEQ + EQMOD, EP, 1.25", 10mm, 25mm, 2x Barlow, 2" TS WA 32mm 70°, 1.25" TS UWA 60° 6mm
    Binocular Nippon 20x80 on alt/az mount.
    Camera SPC 900 NC

  7. #7
    chartram's Avatar
    chartram is offline Silver Supporter
    Points: 33,464, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!50 Posts Achievement!5 Threads Achievement!200+ Posts Achievement!
    Join Date
    Mar 2013
    Location
    Warner Robins, GA
    Posts
    2,929
    Points
    33,464
    Level
    100
    Thanks
    2,206
    Thanked 1,213x 996 Posts

    Default Re: Barlow lens help

    I would say like above that you should use what you have at first. Doubling the magnification does not necessarily mean a better view- it just means higher magnification with tradeoffs. With that comes a narrower field of view, harder focus; and sometimes harder to locate or keep your intended targets in the eyepiece; as well as an additional 'thing' in the optics train that pushes the eyepiece out further... the setuop can become quite cumbersome! Judging by the specs, 33 and 65x magnification at F5 will inhale photons (stolen quote from Phil Leigh hehe) and bring amazing views of the moon, planets & many DSO's & clusters. My Barlow collects dust unless doing planetary work (sometimes lunar) for the most part- Even then, I use it sparingly. Without the Barlow, everything is much brighter and more pleasurable to look at. My aperture is very similar to yours (5" scope).

    I am still pretty new to this stuff too; and can think of many other things I would have bought before a Barlow if I had known then what I know now. I vote 'Keep it simple'

    --Mike
    larrywalls likes this.
    Mike Chartrand
    Celestron 8" Edge HD, WO Star 71, Orion ED80 & ST-80 on a Skywatcher NEQ6 Pro
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    ZWO ASI1600MM, ASI120MC, Lodestar X2 & Orion TOAG
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    Baader LRGB & Astronomik L-3 UV-IR Cut
    Celestron Edge HD .7 Reducer, Hotech Flattener
    My Messier Count: 46
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  8. #8
    Shelldrake's Avatar
    Shelldrake is offline HYPER GIANT
    Points: 22,021, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 3.0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Aug 2013
    Location
    Canada
    Posts
    2,529
    Points
    22,021
    Level
    100
    Thanks
    313
    Thanked 858x 704 Posts

    Default Re: Barlow lens help

    I agree with the advice to get to know your scope first. Four eyepieces should give you plenty of range for starters.
    larrywalls likes this.
    David aka Shelldrake
    Equipment: Sky-Watcher 305mm
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    (f/5), EQ6-R, AZ3 mounts;
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    StarBlast 4.5 reflector (f/4), ED80T-CF refractor (f/6); Celestron 200mm SCT (f/10), 102mm refractor (f/10.3), NexStar GT
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    mount; Jason 313 60mm refractor (f/15.2, EQ1 mount); Celestron 10x50, 8x56, 15x70 binoculars; Eyepieces: SWA 32mm (2"); 32mm Plossl; 25mm, 18mm, 12mm, 9mm X-Cel LX; 6.7mm ES 82; 5mm X-Cel; Meade 8-24mm Zoom; Orion Shorty 2X Barlow, GSO 2.5X Barlow, Antares 3X Barlow; Cameras: ASI224MC, ASI183MC, Canon T3
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    .

  9. #9
    Brian niven's Avatar
    Brian niven is offline Bright Giants
    Points: 5,800, Level: 52
    Level completed: 25%, Points required for next Level: 150
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Mar 2013
    Location
    scotland
    Posts
    490
    Points
    5,800
    Level
    52
    Thanks
    37
    Thanked 74x 67 Posts

    Default Re: Barlow lens help

    I've had several Barlow lenses over the years ranging from cheap garbage to my current televue one.

    One thing I found is you get what you pay for, the only one that is to me truly "invisible" is the televue, but it's also expensive. All others degrade the image from slightly with my celestron omni Barlow to just ruining the view with the cheapo.

    If you are not going to buy a high end one just spend the money on an eyepiece.

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    250px flextube, 10x50 bins
    Celestron x-cel lx 7mm, Williams Optics UWAN 16mm, skywatcher nirvana 28mm, Baader classic ortho 6mm.
    Televue 2x
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.
    , Telrad.
    Astronomik CLS filter, astronomik OIII filter.
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  10. #10
    cherokee's Avatar
    cherokee is offline SUPER GIANT
    Points: 11,223, Level: 73
    Level completed: 25%, Points required for next Level: 227
    Overall activity: 0%
    Achievements:
    2 Posts Achievement20 Posts Achievement!5 Threads Achievement!50 Posts Achievement!200+ Posts Achievement!
    Join Date
    Dec 2012
    Location
    Natomas, Northern California.
    Posts
    1,096
    Points
    11,223
    Level
    73
    Thanks
    255
    Thanked 236x 203 Posts

    Lightbulb AstroMaster Accessory Kit..."

    Happy Holidays Efoyt. You stated that the AstroMaster 130EQ you purchased from Costco is coming with: "It comes with two lenses and a lens set with another two lenses plus 3 filters". That sounds like the AstroMaster Accessory Kit that comes "WITH" a 2x's Barlow.

    94307_astromasteracce_large_1.jpg
    AstroMaster Accessory Kit [item # 94307]
    Randy:
    Skywatcher 10” Collapsible Dobsonian.
    CELESTRON NexStar 8SE with Fastar Secondary.
    MEADE
    NG-60SM 60mm Refractor.
    CELESTRON
    SkyMaster 15x70 Binoculars.


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

 

 
Page 1 of 3 123 LastLast

Similar Threads

  1. 2x Barlow Lens?
    By orion94 in forum Astronomy Beginners Forum
    Replies: 18
    Last Post: 02-25-2012, 05:50 AM
  2. barlow vs. new lens?
    By viperrmike in forum Telescope Eyepieces Forum
    Replies: 4
    Last Post: 02-12-2012, 03:23 PM
  3. 2x and 4x barlow lens
    By ryan1282002 in forum Astronomy Beginners Forum
    Replies: 1
    Last Post: 12-15-2011, 04:34 AM
  4. Help With 2x or 3x Barlow Lens
    By Jlozzi76 in forum Astronomy Beginners Forum
    Replies: 5
    Last Post: 11-10-2011, 10:32 AM
  5. Barlow Lens
    By sanz94 in forum Reflector Telescope Forum
    Replies: 15
    Last Post: 05-08-2011, 06:28 PM

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 02:40 PM.