registration banner astronomy forum

This Advertising is Not Shown to Active Posters -Why not post an observing report, answer a question, joke in the off topic forum now to remove this ad?

Page 1 of 3 123 LastLast
Results 1 to 10 of 22

Thread: Barlow help

  1. #1
    dsnowden's Avatar
    dsnowden is offline White Dwarf
    Points: 1,538, Level: 23
    Level completed: 38%, Points required for next Level: 62
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts AchievementFirst 1000 Experience Points750 Days+ Registered Achievement!1000 Days+ Registered Achievement!
    Join Date
    Oct 2011
    Location
    IL
    Posts
    5
    Points
    1,538
    Level
    23
    Thanks
    0
    Thanked 0x 0 Posts
    Downloads
    0
    Uploads
    0

    Default Barlow help



    Greetings
    I just got my first scope, xt8i, and needed some advice on barlows. I hear good things about the Orion Shorty Plus but also came across the TeleVue 2x BIG Barlow. The TV is twice the price but works with 2" and 1.25" and the Shorty + only with 1.25". Long-term I think the TV would be a better purchase since I won't need to buy another barlow when I eventually get some 2" eyepieces. Any thoughts would be appreciated. Thanks.

  2. #2
    Astronewb's Avatar
    Astronewb is offline HYPER GIANT
    Points: 114,634, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 20.0%
    Achievements:
    200+ Posts Achievement!400+ Posts AchievementFirst 1000 Experience PointsGot three FriendsGhost Achievement! Averaging 5+ posts a day!
    Awards:
    Attachments Award
    Join Date
    Sep 2011
    Location
    Canton, Connecticut, USA
    Posts
    5,466
    Points
    114,634
    Level
    100
    Thanks
    1,515
    Thanked 2,987x 2,067 Posts
    Downloads
    2
    Uploads
    0

    Default

    Hiya, cant comment on the Televue, but I have the Orion 1.25 shorty and it's a good unit, does exactly what it says. Another barlow I use is the Baader Hyperian Zoom Barlow at 2.25x, the Baader comes with a 2" and 1.25' adapter and a T2 adaptor if you want to use it on a camera. The barlow unit itself can thread onto any eyepiece with std filter threads also. Quality and optics are excellent.

    Paul
    Life's a journey, enjoy the ride
    OTA's: Borg 125SD, AR152mm, ES152mm Comet Hunter Orion xx14g , SVR90T-AP, AT6RC, AT10RC, Borg 60ED. Borg 50mm Achro
    Mounts: iOptron CEM60EC, iEQ45, ZEQ25, Mini Tower Pro, SEQ Pro.
    Misc: Lots of EP's. Nikon D5100, Canon T3i, ATF2FF , GSO Coma Corrector. SSAG, QHY5L-II & Lodestar
    My Flickr DSO set> https://www.flickr.com/photos/astronewb2011/sets/

  3. #3
    Cardrw's Avatar
    Cardrw is offline White Dwarf
    Points: 557, Level: 11
    Level completed: 14%, Points required for next Level: 43
    Overall activity: 0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!
    Join Date
    Nov 2011
    Location
    Buenos Aires, Argentina
    Posts
    12
    Points
    557
    Level
    11
    Thanks
    7
    Thanked 1 Time in 1 Post
    Downloads
    0
    Uploads
    0

    Default

    Hi, actually I'm using the Baader Hyperion 2.25x Zoom barlow, little and nice. Just waiting for the Televue 2" 4x, I promise to tell you about it when coming home, but I have to wait about 1 month. Greetings.

    Carlos.

  4. #4
    DobbyZ8's Avatar
    DobbyZ8 is offline Main Sequence
    Points: 2,666, Level: 33
    Level completed: 44%, Points required for next Level: 84
    Overall activity: 0%
    Achievements:
    5 Threads Achievement!50 Posts Achievement!First 1000 Experience Points365 Days+ Registered Achievement!2 Posts Achievement
    Join Date
    Oct 2011
    Location
    Northern Alabama
    Posts
    63
    Points
    2,666
    Level
    33
    Thanks
    16
    Thanked 48x 22 Posts
    Downloads
    0
    Uploads
    0

    Default Consider 2" Zhumell 2X ED barlow

    I was just out tonight comparing my two barlows on Jupiter (1.25" Televue 2X versus a 2" Zhumell ED 2X). I used a modest 20 mm televue plossl with my Z8 Dob. Gives me just 120x. I then tried a 9 mm (cheap) Zhumell plossl giving me almost 270X (about my limit).

    The Zhumell 2" ED cost $50 or so, is quite beefy and comes with a adapter for 1.25" EPs (with compression rings). The cost is excellent for a 2" EP but remember its huge.
    The 2X Televue 1.25" cost twice as much around $110.

    I found no difference on Jupiter with either barlow using my Dob at either 125 or 267X. Both showed clear bands with similar color saturation and clarity at 125X. Pushing my scope to its max at 267x was about the same conclusion (I would like to have had a better 9mm then my cheap Zhumell plossl for a second look since the EP may have been pushed to far). I tried my 7mm Naglar Type 6 with both barlows but at 343X I was certainly beyond my scopes max and lost resolution using either barlow (still could see the major bands but not crisp).

    I consider both to be excellent barlows. If I had it to do all over again I would save my money and buy the Zhumell ED 2X barlow only. Thats almost enough left over for a high quality televue Plossl EP. At the same time its possible I just got a good Zhumell....not sure about the quality control at Zhumell but the 2X ED barlow appears to be well reviewed.

  5. The Following 2 Users Say Thank You to DobbyZ8 For This Useful Post:

    snork (12-31-2011),sopticals (11-20-2011)

  6. #5
    sopticals's Avatar
    sopticals is offline Bright Giants
    Points: 10,477, Level: 70
    Level completed: 76%, Points required for next Level: 73
    Overall activity: 2.0%
    Achievements:
    365 Days+ Registered Achievement!750 Days+ Registered Achievement!First 1000 Experience Points200+ Posts Achievement!1000 Days+ Registered Achievement!
    Join Date
    May 2010
    Location
    New Zealand
    Posts
    578
    Points
    10,477
    Level
    70
    Thanks
    245
    Thanked 399x 285 Posts
    Downloads
    0
    Uploads
    0

    Default

    I use the GSO barlows: 2x 1.25", 3x ED 1.25"and the 2x ED 2". All of these perform very well in my current 14" f5.1 Dob. Highly recommended. Very good value (shouldnt break your bank), and as Dobby Z8 has pointed out compare very favorably with much more expensive units.

    Stephen. (44deg. S.)

  7. #6
    Joe Lalumia's Avatar
    Joe Lalumia is offline Super Moderator
    Points: 56,879, 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
    10,873
    Points
    56,879
    Level
    100
    Thanks
    6,745
    Thanked 5,097x 3,370 Posts
    Blog Entries
    1
    Downloads
    10
    Uploads
    2

    Default

    I am not a barlow user-- even though I have several 1.25 inch and 2 inch barlows. Usually I use a single eyepiece of the proper focal length. I you stick with the hobby your eyepiece collection will EXPAND -- "infinity!

    Just buy the 1.25 inch and see what you think about it.
    ETX 125PE, Stellarvue 80mm BV & Televue TelePod tripod, LX90 8" LNT, 10x50, 15x70mm binoculars, Stellarvue binoviewers, solar filters for all three telescopes. Ham radio call sign - W1XWX

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

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


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

    To view links or images in signatures your post count must be 5 or greater. You currently have 0 posts.
    TelescopeMan RSS Link Audio-Video Podcasts

    "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 posts.

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

    j.gardavsky (12-12-2011)

  9. #7
    TheDoctor's Avatar
    TheDoctor is offline Bright Giants
    Points: 1,689, Level: 24
    Level completed: 89%, Points required for next Level: 11
    Overall activity: 0%
    Achievements:
    Got three FriendsGhost Achievement! Averaging 5+ posts a day!200+ Posts Achievement!20+ Friends Achievement!400+ Posts Achievement
    Join Date
    Nov 2011
    Location
    USA
    Posts
    333
    Points
    1,689
    Level
    24
    Thanks
    29
    Thanked 44x 35 Posts
    Downloads
    7
    Uploads
    0

    Default

    I use the Orion Shorty and it works good.
    Orion StarBlast 4.5 Equatorial Reflector Telescope,
    Sirius Plossl 40mm, 17mm, 15mm, 10mm, 7.5mm, 6mm, and 6.3mm. Shorty 2x Barlow. 5 color planetary filters, and moon filter.

    Messiers 21

  10. #8
    Red Shift's Avatar
    Red Shift is offline Bright Giants
    Points: 2,762, Level: 34
    Level completed: 8%, Points required for next Level: 138
    Overall activity: 0%
    Achievements:
    50 Posts Achievement!5 Threads Achievement!365 Days+ Registered Achievement!2 Posts Achievement20 Posts Achievement!
    Join Date
    Oct 2011
    Location
    Bloomfield, New Jersey, USA
    Posts
    248
    Points
    2,762
    Level
    34
    Thanks
    97
    Thanked 58x 48 Posts
    Downloads
    0
    Uploads
    0

    Default

    Quote Originally Posted by TheDoctor View Post
    I use the Orion Shorty and it works good.
    Ditto for me
    No doubt the Universe is unfolding as it should...

    Astro-Tech AT106 f/6.5 apo, DesertSkyAstro DSV-2 Alt-Az mount.
    WmOptic 3mm SPL, Lanthanum 7.5mm, ES82*11mm, ES82*24mm. Shorty 2x Barlow. Neutral-Density Moon Filter. SkyGlow AP Filter. Basic Color Filters ( RGBY ).

  11. #9
    TMarx's Avatar
    TMarx is offline White Dwarf
    Points: 1,811, Level: 26
    Level completed: 11%, Points required for next Level: 89
    Overall activity: 4.0%
    Achievements:
    365 Days+ Registered Achievement!2 Posts AchievementFirst 1000 Experience Points750 Days+ Registered Achievement!1000 Days+ Registered Achievement!
    Join Date
    Dec 2011
    Location
    Paris
    Posts
    15
    Points
    1,811
    Level
    26
    Thanks
    7
    Thanked 0x 0 Posts
    Downloads
    0
    Uploads
    0

    Default

    Hello,
    I would like some help on 2x Barlow lenses for my Orion Skyquest XT8. Would they help me to see planets and nebulas? Which one do you recommend?
    Thanks!

  12. #10
    WWPierre's Avatar
    WWPierre is offline HYPER GIANT
    Points: 55,098, Level: 100
    Level completed: 0%, Points required for next Level: 0
    Overall activity: 0%
    Achievements:
    10 Days registered3 Years + Achievement400+ Posts AchievementGhost Achievement! Averaging 5+ posts a day!1000 Days+ Registered Achievement!
    Join Date
    Jun 2009
    Location
    Squamish B.C.
    Posts
    6,952
    Points
    55,098
    Level
    100
    Thanks
    1,096
    Thanked 2,925x 1,806 Posts
    Downloads
    2
    Uploads
    1

    Default

    Quote Originally Posted by TMarx View Post
    Hello,
    I would like some help on 2x Barlow lenses for my Orion Skyquest XT8. Would they help me to see planets and nebulas? Which one do you recommend?
    Thanks!
    I have a number of barlows; 2x and 3x. I have found absolutely no correlation between price and optical quality. Of the two barlows below. one cost less than $20 and one cost $120. The difference in optical quality is between marginal and undetectable.

    I bought another 3x barlow with an in-between price, (less than $50) and it was noticibly worse. I removed the lens and use it as a spacer.

    This barlow tested noticibly better (sharper in daylight, and at the edge of the FOV) than any of my other barlows.

    Go figure.
    Attached Images Attached Images
    Meade 16" LightBridge; Celestron G-8N Bird-Jones/motorized EQ5; Orion 127 Mak/go-to EQ5; Burgess 127f8 refractor; Sky-Watcher 5" F/5 collapsible dob; 90mm Mak/motorized EQ2; Royal Astro 76/910-GEM; Meade 60x700 refractor/alt/az; Zhumell 25x100 Coin Ops; GalilleoScope. Celestron 8mm-24mm zoom; lots of fixed EPs,some good, some..not so much. A small collection of surveying instruments; a forest of tripods; Canon Rebel Xti. Confirmed gadget junkie; Custodian of the Magnetic North Pole (Send $1.00 to Pierre each time you use a compass.)
    49-41-37.03N 123-09-29.61W Calculated magnetic declination: 17° 39' East

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


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


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

    We have been broadcasting our presence to the Universe for 100 years now. If there is a detachment of Galactic Pest Control within 100 light years, they are already on the way.

 

 
Page 1 of 3 123 LastLast

Similar Threads

  1. TeleVue 2" Big Barlow vs GSO 2" Barlow
    By mzu in forum Telescope Eyepieces Forum
    Replies: 14
    Last Post: 09-24-2011, 04:07 AM
  2. Celestron Ultima 2x Barlow and Parks Gold Series Barlow
    By botoole in forum Telescope Accessories Forum
    Replies: 1
    Last Post: 07-25-2011, 12:55 PM
  3. Barlow
    By JackieStar in forum Telescope Eyepieces Forum
    Replies: 1
    Last Post: 03-08-2011, 12:26 AM
  4. Barlow Selection - Celestron Ultima or GSO 2.5 Barlow?
    By PBalu in forum Telescope Accessories Forum
    Replies: 2
    Last Post: 02-05-2011, 02:02 AM

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 06:14 AM.