Results 1 to 3 of 3
  1. #1
    WWPierre's Avatar
    WWPierre is offline HYPER GIANT
    Points: 64,445, 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
    6,948
    Points
    64,445
    Level
    100
    Thanks
    1,095
    Thanked 2,953x 1,808 Posts

    Default 3X Barlow Shootout



    I hadn't thought that a 3X barlow lens would be a very useful piece of kit, but, having acquired a really cheap looking plastic barreled one with one of my Craigslist scopes, I decided to try it out with my 30mm Siebert Ultra one night and found that the combination gave me nice views of Saturn. The Siebert is probably my most comfortable eyepiece.

    With that in mind, I ordered a supposedly better quality one from Telescope Warehouse, and when it came, I set up a daytime shootout at 80X using my new Meade 90mm refractor.

    The new barlow is manufactured by Kson in China, and is quite impressive with it's black anodizing and brass compression ring, but, it is obvious that the glass itself is not of the quality of that in the cheap, plastic barreled 3X. The image presented was just plain fuzzier using the Kson barlow. The combination of the no-name barlow and the Siebert 30mm gave me the best and most comfortable views. I got pretty much the same view with the 9mm shown in the photo below, but my glasses were tight against the eyecup, and it was a strain.

    I was pretty surprised that the "better" barlow didn't perform "better" than the no-name, but my contention that cheaper equipment performs at least 90% as well as the pricy stuff was reinforced.

    Can one do a proper equipment test in the daylight? I suppose there could be argument, but what does one do when it's cloudy all the time?
    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 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.

    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.

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

    Cladinator (06-16-2011),deaman49 (06-16-2011),ghswen (06-16-2011),GRB1984 (06-16-2011),OleCuss (06-16-2011)

  3. #2
    deaman49's Avatar
    deaman49 is offline HYPER GIANT
    Points: 18,723, Level: 94
    Level completed: 56%, Points required for next Level: 177
    Overall activity: 0%
    Achievements:
    200+ Posts Achievement!400+ Posts AchievementGhost Achievement! Averaging 5+ posts a day!First 1000 Experience PointsGot three Friends
    Join Date
    Apr 2011
    Location
    Allegany, New York
    Posts
    4,228
    Points
    18,723
    Level
    94
    Thanks
    1,522
    Thanked 866x 775 Posts

    Default

    Great review WWPierre. You answered some questions I had about Barlows, and confirmed my beliefs about more expensive equipment. The quality isn't always as high as the price!
    Clear Skies!
    Lee
    Lee

    Zhumell Z10 DOB.
    Forgive my stupidity, it's hereditary!
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    If ignorance is Bliss, then I'm BLISTERED!
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

    I make mistakes, so others don't have too!
    To view links or images in signatures your post count must be 5 or greater. You currently have 0 signatures.

  4. #3
    parrishskies's Avatar
    parrishskies is offline Bright Giants
    Points: 7,495, Level: 60
    Level completed: 73%, Points required for next Level: 55
    Overall activity: 0%
    Achievements:
    Got three Friends200+ Posts Achievement!5+ Referrals Achievement!400+ Posts AchievementFirst 1000 Experience Points
    Join Date
    Feb 2011
    Location
    Bradenton, FL
    Posts
    343
    Points
    7,495
    Level
    60
    Thanks
    167
    Thanked 171x 95 Posts

    Default

    Wonderful observation......Thanks for sharing.

    Tom

 

 

Similar Threads

  1. Replies: 5
    Last Post: 03-16-2014, 02:41 PM
  2. TOA-150 vs. 14" LX200 shootout
    By dramodt in forum Telescope Forums
    Replies: 10
    Last Post: 01-19-2012, 12:26 PM
  3. 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
  4. Do I need a Barlow?
    By JimND in forum Astronomy Beginners Forum
    Replies: 7
    Last Post: 12-06-2010, 07:07 PM
  5. H-Alpha Shootout, 2004/9/2
    By Dave Mitsky in forum Amateur Astronomy Forum
    Replies: 0
    Last Post: 09-05-2004, 02:03 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 06:45 PM.