Jump to content

sgl_imaging_challenge_6_banner_jupiter_2021.jpg.eacb9f0c2f90fdaafda890646b3fc199.jpg

 

 

Eyepieces for 90/500 achromat


Recommended Posts

Good afternoon, after taking delivery of my new Svbony SV48, the clouds have descended and I stand no chance of first light until tomorrow, so my thoughts turn to eyepieces. I currently have two 1.25" Celestron Omni plossls with 50 degrees fov, a 32mm and a 15mm. I bought these originally for my 90/900  and represented a meaningful upgrade on the two skywatcher lenses I had. 

I would like to have a higher power lens, say 8-10mm range, and wondering if sticking with the Omni plossls is a good idea, or if I should look at alternative options. 

When I view anything I tend to start with the 32, then once centred go to the 15mm and if I want to then stick in the celestron 2x Barlow (which I am not overly keen on as seems to degrade the view more than I am happy with). Hence my desire for a standalone higher power lens. 

An alternative recommendation for a Barlow would also be welcome! 

I read that the plossl design is not so effective when paired with scopes quicker than F6. As my scope is F5.6, what alternative designs should I be looking to use? 

I plan to use scope to learn how to star hop, look at messier objects and learn more about the night sky. I have my copy of 'Turn left at Orion' to help me on my way... 

Edited by Marc1964
Amended 'image' to 'view'
Link to comment
Share on other sites

On 28/03/2021 at 08:54, Marc1964 said:

I would like to have a higher power lens, say 8-10mm range, and wondering if sticking with the Omni plossls is a good idea, or if I should look at alternative options.

I would go with an 8mm BST Starguider for the comfortable eye relief and larger apparent field of view.  A Plossl at 8mm has fairly tight eye relief.

  • Like 1
Link to comment
Share on other sites

I'm not familiar with that Barlow.  On the other hand I've heard nothing bad about it.  

Some 2x Barlows can also be used at 1.5x, although it's not always mentioned in the blurb, and it's one of these I'd recommend.  These dual 1.5x/2x Barlows allow the black lens cell to be unscrewed from the body of the Barlow and then screwed into the filter thread at the bottom of an eyepiece to give approx 1.5x.   First Light Optics do one in their Astro Essentials range that also has a standard T thread at the top for attaching a camera.  It's just £25.  Go to https://www.firstlightoptics.com/barlow-eyepieces/astro-essentials-125-2x-barlow-with-t-thread.html

Edited by Second Time Around
  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share

  • Recently Browsing   0 members

    No registered users viewing this page.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.