Jump to content

Stargazers Lounge Uses Cookies

Like most websites, SGL uses cookies in order to deliver a secure, personalised service, to provide social media functions and to analyse our traffic. Continued use of SGL indicates your acceptance of our cookie policy.

sgl_imaging_challenge_banner_christmas_presents_winners.thumb.jpg.0650e36a94861077374d1ab41812d185.jpg

Sign in to follow this  
ukuleledaveey

Buying a Barlow Lense

Recommended Posts

Hello you wonderful people,sorry i have not been on here much lately,busy life and terrible cold/flu, i am considering purchasing a Barlow lense, and i would very much appreciate your thoughts and input, as a total newbie, i dont know very much, i know i want to get a 1,25 x2 barlow, but is it ok to buy a generic or should i buy a brand name and spend a little more, does it matter what i buy.

I have seen them ranging from £6.00 upwards i was thinking of getting the celestron for about £25.

Anyway thank you very much for taking the time to read and comment, best regards Dave.

Share this post


Link to post
Share on other sites

In general you are always better off investing a little extra £$€ in buying good quality. In the best case you know that you can count on good quality on your side (if the view is ugly then you can know that it is almost certainly not the fault of that specific piece of equipment). If it does not work for you, you can always sell a good piece of equipment for a good fraction of new price. That will not be possible with a cheap thing. I understand you are in a budget so perhaps you want to monitor what's going on in the second hand market. Perhaps you can add a post in the "wanted" forum for a good quality, reasonably priced barlow. Good luck.

Share this post


Link to post
Share on other sites

don't buy anything new for £6, it'll be junk. £25 might be a little cheap as well. It'll work, but maybe not well. Others may have them and be in a position to compare against more expensive ones. nothing worse than looking through a bad piece of glass.

  • Thanks 1

Share this post


Link to post
Share on other sites

Thank you  Star Forming & Brown Dwarf, very much appreciate your thoughts and thank you so much for replying, yeah i was never going to buy the £6.00 just i noticed  on eBay they start from that price, also does a short Barlow make any difference  ?.

Many thanks Dave

Share this post


Link to post
Share on other sites

There is currently an Antares Astro barlow for sale in the second hand section on this site for £15. They aren't the most high spec brand but still decent enough to give one a try at that price in my opinion. 

i only used a barlow for a short time before realising I didn't like spending so long faffing about with it and preferred to just use different focal length eyepieces instead. Whatever you do, don't spend big money on one until you've tried one for a while anf you know you like them. 

  • Thanks 1

Share this post


Link to post
Share on other sites

If the £6 eBay barlow is the same as the one sold by FLO as "astro essentials" then it is in fact very good optically. 

For a specific recommendation I would consider the Explore Scientific focal extender or Televue Powermate as these alter the light path in a different manner. 

I also prefer to use a barlow to produce my high power options rather than to use one to produce a load of intermediate steps between existing eyepieces. 

  • Thanks 1

Share this post


Link to post
Share on other sites

thanks guys for your imput very much appreciated, does a short  or long barlow make any difference, sorry for asking dumb questions lol but i know nothing,cheers once again.

Share this post


Link to post
Share on other sites
6 hours ago, Jimtheslim said:

There is currently an Antares Astro barlow for sale in the second hand section on this site for £15. They aren't the most high spec brand but still decent enough to give one a try at that price in my opinion. 

i only used a barlow for a short time before realising I didn't like spending so long faffing about with it and preferred to just use different focal length eyepieces instead. Whatever you do, don't spend big money on one until you've tried one for a while anf you know you like them. 

 

6 hours ago, Ricochet said:

If the £6 eBay barlow is the same as the one sold by FLO as "astro essentials" then it is in fact very good optically. 

For a specific recommendation I would consider the Explore Scientific focal extender or Televue Powermate as these alter the light path in a different manner. 

I also prefer to use a barlow to produce my high power options rather than to use one to produce a load of intermediate steps between existing eyepieces. 

thanks guys very much appreciated, best wishes dave.

Share this post


Link to post
Share on other sites
8 hours ago, Jimtheslim said:

There is currently an Antares Astro barlow for sale in the second hand section on this site for £15. They aren't the most high spec brand but still decent enough to give one a try at that price in my opinion. 

i only used a barlow for a short time before realising I didn't like spending so long faffing about with it and preferred to just use different focal length eyepieces instead. Whatever you do, don't spend big money on one until you've tried one for a while anf you know you like them. 

I have enquired about the Antares 2x Barlow , many thanks Jimtheslim

best regards

Dave

Edited by ukuleledaveey

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Sign in to follow this  

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By LR Watanabe
      Okay, this is yet to happen, but in one year or so, I'll be fortunate enough to be in the position of being able to spend a whopping 1200$ on one telescope/mount and all  that [removed word].
      Like a narrowband filter narrows the light going through the eyepiece, I've narrowed it down to either getting something of your recommendations OR a Sky Watcher 10" Flextube Dobsonian. Since, by that time, I'll already have a HEQ5 and a 150 PDS that'll be used for taking Astrophotos, I thought I might as well get something for visual observations of mostly galaxies (and sometimes nebulae), too. Dobsonians are the best as they offer the most aperture, which is what I've heard from at least 1000 beginner-aimed websites like "What telescope should you choose?" In the end, it all boils down to aperture for DSO visual astronomy, and so my heart is set upon a good Dob under 1200$– a Sky Watcher 10" Flextube.
      What do you think of this? A 10" flextube Dob by SW, a company known for making quality products (and some rubbish ones somtimes, too)?
       
      Clear skies,
      Leon
    • By Matty_C
      Hello all,
      I have just joined and have been looking around, and putting in various searches to find the answer to my question(s).
      I have already found some valuable information, but i can't find a specific answer to a question i have relating to exposure times.
      I have shot the milky way several times before, from a tripod and a wide angle lens. I am aware of and understand the "500 rule" and that worked fine for me at first when i was shooting with my Canon 6D Mark II. When i moved over to the Sony A7III i noticed significant trailing using the same rule and that led me to the NPF rule (Via the photopills app incase people dot know).
      I am heading back to Tenerife once again in about 6 weeks time and want to buy a star tracker so i can get some really detailed images.
      I have done a fair bit of research and in principle, the whole thing doesn't seem to be too daunting or difficult.
      I have purchased the Polar Scope Align Pro app so i can align Polaris as accurately as possible, i will practise putting the unit together and familiarising myself with the different parts etc, but it is the exposure times that i do not understand.
      My best glass is the Carl Ziess 50mm F/1.4 Planar, the 18mm F/2.8 Batis, the Sigma 35mm F/1.4 Art & the IRIX 15mm F/2.4 Blackstone.
      I currently do not own, nor have i ever used a tracker, and I cannot find any information relating to which aperture, ISO and Shutter length any of these focal lengths should or could be shot at.
      Is there anything similar to the 500 rule or NPF rule that relates to using a tracker with varied focal lengths? or is it just a case of stepping the lens down for sharpness and then trial and error?
      Thanks in advance,
       
      Matt.
       
       
       
       
       
    • By PembrokeSteve
      Hi,
      I am at the moment trying to set up "Dithering" on my APT. 
      I am presently using a Canon 600D, with Orion ED80 Refractor, mounted on my NEQ6PRO.
      Please note, I have not yet progressed to Guiding - NO GUIDING
      Do I basically select "APT Dithering" and maybe leave all the other settings at Default?
      Most grateful if anyone can let be know which settings I might need to adjust, and to what values.
      Finding it all a little bit confusing !
      Many Thanks
      Steve

       

    • By Kronos831
      Hey guys! It's me ,kronos 
      Yesterday my 8" dob arrived and i had some lovely views with it! I also bought an astroessential t ring for my nikon Dslr.
      Im looking towards planetary imaging (not serious, just for the fun) what else do i need?(btw my cam is a nikon D7100)
    • By Cosmic Geoff
      I had another go at imaging the shrinking Mars, this time without and with a x2 Barlow lens.  The results are better with the Barlow, which is what one is led to expect.   For whatever reason (probably bad seeing and/or low planets) when I tried a Barlow previously it just made the blur bigger.  Equipment: C8 SE, ASI120MC, x2 Skywatcher kit Barlow element screwed directly into 1.25" barrel of the ZWO camera.   This does seem to give x2 in practice.  I did not use an ADC on the grounds that I shouldn't need one with Mars at an altitude of over 40 degrees.
      3000 image video captured with Sharpcap. Processed in Registax6.  I found that the Sharpcap exposure histogram did not appear to work on such a small image, so had to estimate the exposure.   Yes, optical ADC correction would be better, but the dispersion seemed very small.  Blowing up the image x2 in Registax showed a small colour fringe, which I took out with a single point of correction.
      The images show some surface detail though the contrast is low (if you are using a flatscreen try viewing from below: ?)  Mare Sirenum, with Mare Acidalium just discernible foreshortened at upper right. 


×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.