Image of the day

Captured by
Michael Scherman

M17 Swan-Omega Celestron C6 Hyperstar2

My Account

New to Astromart?

Register an account...

Need Help?

Splitting Sirius?

Started by ivanong, 01/04/2005 03:58PM
Posted 01/04/2005 03:58PM Opening Post
Hi, I am using a C9.25" to observe double stars, and having a great time. I had nice views of Antares and its little green companion over the summer. It turned out once I knew where to look for it, it was even easy to glimpse this even in non-optimal skies. I could even see it with my 4" Tak without too much effort.

So question is, has anyone split Sirius? If so, what techniques do you use? I know this probably calls for the steadiest of skies, but is this a foolhardy attempt?

Thanks,
Ivan
Posted 01/04/2005 07:21PM #1
Quoting S & T,

At its current separation of 7", it is visible in an optically excellent 5 or 6 inch scope. Indeed, Sue French reported glimpsing it in her 4.1" apo refractor [A-P Traveler] in 2001, at a separation of 5.5"

I have never split it myself, but I'm sure many others have.

Good luck,
Milt
Posted 01/05/2005 01:46PM #2
A couple of thoughts:

1. The period of the "pup" is about 50 years, anybody know what the current separation is?

2. Given the right conditions and a well collimated/cooled scope, you should be able to do it with a C9.25.

Jon
Posted 01/06/2005 10:17PM #3
I have split Sirius a couple times. Once in early 2003 and early 2004 using a C11. The trick for me was to wait until Sirius was highest in the sky for my latitude and steady skies. Both times were in the early part of the year (January, February).

I say keep trying.

Pernel
Posted 01/06/2005 11:32PM #4
Ivan, I've been meaning to try it for the first time ever and I was pleased to see your thread. I'll keep checking in to see how you and others do. I found the separation that someone else asked for. It's around 6.5" this year. My source for this information was the 1994 Astronomical Calendar. Gotta love that calendar!
Ken


Customized Zhumell Z12 on Dedicated Atomic EQ Platform
Customized Hybrid Z12/Lightbridge on Baltic Birch Planisphere Mount

(I'm holding famous Martian meteorite ALH84001 in the picture.)