Jump to content


Talitha (Iota UMa)

Recommended Posts

As mentioned here: 

I was trying to split Talitha (Iota UMa) last night, in a 4" (achro) refractor. No luck at all. The double star has components with magnitudes of +3.14 and +9.2 and a separation of 2.3 arcseconds.

Is it possible in a scope like that? Is it worth trying in my 8" dob?

I tried a search in SGL but it's hard to find anything as there was a very prolific poster called "Talitha" many years ago.

Link to comment
Share on other sites

I tend to apply my rule of thumb to double stars. It is that:-

When the delta-m number (difference in magnitude) is bigger than the arcsecond separation it 'aint going to be easy regardless of scope size.


  • Thanks 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
  • 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.