Jump to content

  •  

CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.

Photo

TeleVue 1 1/4 2X Barlow

  • Please log in to reply
30 replies to this topic

#1 leonard

leonard

    Apollo

  • *****
  • topic starter
  • Posts: 1,433
  • Joined: 19 Oct 2007
  • Loc: West Virginia

Posted 12 February 2024 - 08:12 AM

Hello ,

 

      Whats the problem with this Barlow , the 2x 1 1/4 it seems to get no respect .

           Many knowledgeable people that use Barlows claim the TeleVue 3x Barlow is quite good .

               So what’s the problem with the 2X ?

 

                         Thanks for any insight .



#2 Sebastian_Sajaroff

Sebastian_Sajaroff

    Surveyor 1

  • -----
  • Posts: 1,578
  • Joined: 27 Jan 2023
  • Loc: Montreal, Quebec, Canada

Posted 12 February 2024 - 08:31 AM

Hello ,

 

      Whats the problem with this Barlow , the 2x 1 1/4 it seems to get no respect .

           Many knowledgeable people that use Barlows claim the TeleVue 3x Barlow is quite good .

               So what’s the problem with the 2X ?

 

                         Thanks for any insight .

I used it for a year on my 70 mm F/6 refractor with no issues.

It's optically superb, it's light and not bulky at all.


  • Mike B, leonard and Kutno like this

#3 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 112,173
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 12 February 2024 - 10:29 AM

My 1.25 inch 2x TeleVue Barlow is my favorite Barlow.. I've made some difficult splits with it and the 3.5 mm Nagler.. I use it with the 13 mm and 11 mm Type 6s to fill the gap between the 7 mm and 5 mm.

 

I've seen no issues with it, that's about the best thing that can be said about a Barlow..

 

Jon


  • Mike B, leonard, Kutno and 1 other like this

#4 saemark30

saemark30

    Surveyor 1

  • -----
  • Posts: 1,786
  • Joined: 21 Feb 2012

Posted 12 February 2024 - 11:17 AM

The 2x Big Barlow is superb and highly recommended.


  • leonard likes this

#5 leonard

leonard

    Apollo

  • *****
  • topic starter
  • Posts: 1,433
  • Joined: 19 Oct 2007
  • Loc: West Virginia

Posted 12 February 2024 - 01:24 PM

My 1.25 inch 2x TeleVue Barlow is my favorite Barlow.. I've made some difficult splits with it and the 3.5 mm Nagler.. I use it with the 13 mm and 11 mm Type 6s to fill the gap between the 7 mm and 5 mm.

 

I've seen no issues with it, that's about the best thing that can be said about a Barlow..

 

Jon

 

       Well with you and Sebastian giving the A-ok on this Barlow I’m thinking I am mistaken .

       Must be an impression I picked up over the years . I know for sure more praise is placed on the 

       1.25  3X in posts read over the years . So it’s good to know as I may purchase a 2X TV barlow

        This year , my first Barlow , there’s a first time for everything .



#6 Sebastian_Sajaroff

Sebastian_Sajaroff

    Surveyor 1

  • -----
  • Posts: 1,578
  • Joined: 27 Jan 2023
  • Loc: Montreal, Quebec, Canada

Posted 12 February 2024 - 01:30 PM

Barlows have their physical limitations as any other tool.

This particular Barlow will double magnification, so make sure the final result doesn't fall outside your telescope "real life" capabilities.

 

For example, 200x on a 6" Newtonian is OK (as long as the seeing is good), but 400x rarely is !


  • leonard likes this

#7 CrazyPanda

CrazyPanda

    Aurora

  • *****
  • Posts: 4,808
  • Joined: 30 Sep 2012

Posted 12 February 2024 - 01:45 PM

Hello ,

 

      Whats the problem with this Barlow , the 2x 1 1/4 it seems to get no respect .

           Many knowledgeable people that use Barlows claim the TeleVue 3x Barlow is quite good .

               So what’s the problem with the 2X ?

 

                         Thanks for any insight .

Every time the TV 2x barlow is brought up, I see it being compared with barlows like the Baader Zeiss, Baader VIP, Nikon 1.6x, TMB ED 1.8x, and A-P BARADV - all very stiff competition with a few of those barlows being more expensive than the TV. Price/performance isn't 1:1, but perhaps those other barlows have a slim edge in performance as a function of their higher price point?

 

I've seen how my 2.7x APM ED barlow provides subtle but still noticeably better contrast and color-free rendition of the Moon than the otherwise well regarded Meade #140 ED barlow. I would not be surprised if there are similar differences between the TV and those other high-end barlows.


Edited by CrazyPanda, 13 February 2024 - 12:46 AM.

  • leonard likes this

#8 mountain monk

mountain monk

    Gemini

  • *****
  • Posts: 3,382
  • Joined: 06 Nov 2009
  • Loc: Grand Teton National Park

Posted 12 February 2024 - 01:58 PM

The only complaint I’ve heard about the TV Barlows is that they are rather tall—some are 4-5” — whereas the 

Nikon and Zeiss, for instance, are much shorter. A 2” TV Barlow combined with say a 13mm Ethos looks huge; with a 16mm 85* Masuyama much less so, and the latter with the Nikon seems tiny. But I’ve seen no reason to question the TV’s performance.

 

Dark skies.

 

Jack


Edited by mountain monk, 12 February 2024 - 03:08 PM.

  • leonard likes this

#9 saemark30

saemark30

    Surveyor 1

  • -----
  • Posts: 1,786
  • Joined: 21 Feb 2012

Posted 12 February 2024 - 02:05 PM

The Meade barlow #140 3 element APO barlow did look to have less contrast and less brightness to me.

There is also an older TV 1.8x barlow. Is there any bad reports on this one?


  • leonard likes this

#10 mountain monk

mountain monk

    Gemini

  • *****
  • Posts: 3,382
  • Joined: 06 Nov 2009
  • Loc: Grand Teton National Park

Posted 12 February 2024 - 06:20 PM

Minor correction… Actually, the TV2x Barlow is about 3” long; the 2x Powermate is about 5”.

 

Dark skies.

 

Jack



#11 Mike B

Mike B

    Starstruck

  • *****
  • Posts: 12,819
  • Joined: 06 Apr 2005
  • Loc: My backyard in the Big Valley, CA

Posted 13 February 2024 - 12:31 AM

The Meade barlow #140 3 element APO barlow did look to have less contrast and less brightness to me.

There is also an older TV 1.8x barlow. Is there any bad reports on this one?

I’ve seen only good marks re: the TV 1.8x Barlow… but I’ve never used one.



#12 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 112,173
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 13 February 2024 - 03:25 AM

I've seen how my 2.7x APM ED barlow provides subtle but still noticeably better contrast and color-free rendition of the Moon than the otherwise well regarded Meade #140 ED barlow. I would not be surprised if there are similar differences between the TV and those other high-end barlows.

 

I would not compare the Meade 140 to the TeleVue.  

 

Jon



#13 coutleef

coutleef

    Aurora

  • *****
  • Posts: 4,625
  • Joined: 21 Feb 2008
  • Loc: Saint-Donat, Quebec, Canada

Posted 13 February 2024 - 12:39 PM

i agree with the poster
i ha read on CN that the TV 3x barlow is better than the 2x. , but never that the 2x barlow was not good

i wonder how the comparison was made as with the same eyepiece, power will be different


Edited by coutleef, 13 February 2024 - 12:40 PM.

  • Jon Isaacs and Mike B like this

#14 f74265a

f74265a

    Viking 1

  • -----
  • Posts: 991
  • Joined: 19 Oct 2020

Posted 13 February 2024 - 08:10 PM

Tv 2x Barlow is totally fine. No issues. I own it. You are unlikely to be unhappy.
That said, I rarely use it. The tv 3x Barlow and 2.5 powermate just seem ever so slightly better. Subjective viewpoint. I have both of those too. 2.5 powermate is my favourite of these 3 options. I really like how the powermate doesn’t mess with the eye relief or anything else except magnification.

#15 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 112,173
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 14 February 2024 - 07:28 AM

Tv 2x Barlow is totally fine. No issues. I own it. You are unlikely to be unhappy.
That said, I rarely use it. The tv 3x Barlow and 2.5 powermate just seem ever so slightly better. Subjective viewpoint. I have both of those too. 2.5 powermate is my favourite of these 3 options. I really like how the powermate doesn’t mess with the eye relief or anything else except magnification.

 

I am the other way, I rarely use anything but 2x Barlows.  I use Barlows with eyepiece 13mm and shorter so eye relief issues just don't happen.  2x Barlows fit nicely with the type 6 Naglers, I use the 5mm, 3.5mm, 2.5mm (2X) 1.75mm (2X) for my high powered stuff.  My scopes are all F/6 or faster so I need those short focal lengths.

 

Jon


  • Mike B likes this

#16 MrMartin

MrMartin

    Ranger 4

  • -----
  • Posts: 336
  • Joined: 07 Jan 2010

Posted 14 February 2024 - 09:23 AM

If TeleVue made the 2x Powermate in the 1.25 inch format that would be on my shortlist to buy. Their 2 inch/2x Powermate is just a bit too long/heavy for my liking and out of my price range for how often I would use it. The only thing that stopped me from getting their 2x barlow was that I wanted a focal extender that didn't change the eye relief as much in the eyepieces.


Edited by MrMartin, 14 February 2024 - 09:50 AM.


#17 Jon Isaacs

Jon Isaacs

    ISS

  • *****
  • Posts: 112,173
  • Joined: 16 Jun 2004
  • Loc: San Diego and Boulevard, CA

Posted 14 February 2024 - 12:07 PM

If TeleVue made the 2x Powermate in the 1.25 inch format that would be on my shortlist to buy. Their 2 inch/2x Powermate is just a bit too long/heavy for my liking and out of my price range for how often I would use it. The only thing that stopped me from getting their 2x barlow was that I wanted a focal extender that didn't change the eye relief as much in the eyepieces.

 

Have you every tried a mid length Barlow like the TeleVue 1.25 inch 2x?

 

I see no difference in eye relief with the 16 mm and shorter focal length eyepieces I use it with.

 

Jon


  • Mike B, MrMartin, havasman and 1 other like this

#18 MrMartin

MrMartin

    Ranger 4

  • -----
  • Posts: 336
  • Joined: 07 Jan 2010

Posted 14 February 2024 - 12:24 PM

Have you every tried a mid length Barlow like the TeleVue 1.25 inch 2x?

 

I see no difference in eye relief with the 16 mm and shorter focal length eyepieces I use it with.

 

Jon

I have not. I ended up going with the 1.25inch 2x ES Focal Extender when they were on sale late last year. It's good to hear the mid length TeleVue barlow doesn't impact eye relief that much!


Edited by MrMartin, 14 February 2024 - 01:04 PM.


#19 Mike B

Mike B

    Starstruck

  • *****
  • Posts: 12,819
  • Joined: 06 Apr 2005
  • Loc: My backyard in the Big Valley, CA

Posted 14 February 2024 - 01:19 PM

I have not. I ended up going with the 1.25inch 2x ES Focal Extender when they were on sale late last year. It's good to hear the mid length TeleVue barlow doesn't impact eye relief that much!

 

If TeleVue made the 2x Powermate in the 1.25 inch format that would be on my shortlist to buy. Their 2 inch/2x Powermate is just a bit too long/heavy for my liking and out of my price range for how often I would use it. The only thing that stopped me from getting their 2x barlow was that I wanted a focal extender that didn't change the eye relief as much in the eyepieces.

Looking around the web retailers at various Barlow offerings, the weights are “all over the scale”. The TV 2x is fairly modest for weight, as is the Meade, and especially the Dakin 2.4x (1-1/4”) which is a true featherweight!


  • MrMartin likes this

#20 havasman

havasman

    James Webb Space Telescope

  • *****
  • Posts: 15,649
  • Joined: 04 Aug 2013
  • Loc: Dallas, Texas

Posted 14 February 2024 - 01:21 PM

There's nothing wrong with the TV 2x. It's very good. It's the internet review and report system that's all jacked up. NOT ALL OPINIONS ARE EQUAL!


Edited by havasman, 14 February 2024 - 01:25 PM.

  • Jon Isaacs, leonard, Kutno and 2 others like this

#21 f74265a

f74265a

    Viking 1

  • -----
  • Posts: 991
  • Joined: 19 Oct 2020

Posted 14 February 2024 - 03:50 PM

There's nothing wrong with the TV 2x. It's very good. It's the internet review and report system that's all jacked up. NOT ALL OPINIONS ARE EQUAL!


Completely agree with this. There is nothing to be unhappy about with the tv 2x 1.25 Barlow.
  • Mike B, leonard and alnitak22 like this

#22 alnitak22

alnitak22

    Cosmos

  • *****
  • Posts: 9,155
  • Joined: 12 Feb 2011

Posted 14 February 2024 - 04:03 PM

There's nothing wrong with the TV 2x. It's very good. It's the internet review and report system that's all jacked up. NOT ALL OPINIONS ARE EQUAL!

Ain’t THAT the truth?!



#23 N3p

N3p

    Surveyor 1

  • *****
  • Posts: 1,980
  • Joined: 25 Jun 2018

Posted 14 February 2024 - 04:21 PM

I was told before that the Televue 1.25" 2x was the very best 1.25" barlow I could buy and it would be invisible in the chain. It's a sad thing that I don't use barlows.

 

This one

https://www.amazon.c...w,aps,76&sr=8-1



#24 f74265a

f74265a

    Viking 1

  • -----
  • Posts: 991
  • Joined: 19 Oct 2020

Posted 14 February 2024 - 04:51 PM

Don’t know it it is the absolute best available, but it is excellent and far, far more than adequate. Baader sells a Zeiss spec 2x Barlow that’s awfully good but at more than 3x the price (at least in the USA) of the tv Barlow. So, if I could only have 1 2x Barlow, I would choose the tv bc both excellent and reasonably priced.

Edited by f74265a, 14 February 2024 - 04:52 PM.

  • Mike B likes this

#25 Bkmiller4463

Bkmiller4463

    Viking 1

  • *****
  • Posts: 748
  • Joined: 23 Nov 2020
  • Loc: Salt Lake City

Posted 14 February 2024 - 10:05 PM

I like it. Optically excellent.  It kind of gets out of the way.

 

But, it’s a little long. Like the Lama. 


Edited by Bkmiller4463, 14 February 2024 - 10:06 PM.

  • MrMartin likes this


CNers have asked about a donation box for Cloudy Nights over the years, so here you go. Donation is not required by any means, so please enjoy your stay.


Recent Topics






Cloudy Nights LLC
Cloudy Nights Sponsor: Astronomics