Lambda Cygni split!

I had clear skies in south Dublin on Friday night -26th July. So I set the 6.2" apo up in the back garden. It was a calm night and I especially knew this when I could split Izar at a mere 112X. I spotted Vega and I split Epsilon Lyrae at the same power into 4 components. Then I split the other double -double in Lyra -STF 2470 and 2474 at 40X.
Rasalgethi was next on the list and I split him at 40X and 112X. So my final challenge was a very close double Lambda Cygni. It is very close to naked eye Epsilon Cygni -so it is easy to find. I couldn't split it at 280X -but was distinctively separated at 320X! I was very happy with that. My 3.5mm Nagler is reliable in splitting such tight doubles as Zeta Cancri, 32 Orionis, 52 Orionis and STF 1837 in Libra.
Getting back to Lambda Cygni, I could not detect any colours. Component A is 4.7 magnitude and B is 6.3. the position angle is 5 degrees. So the B component is directly north of A, and the separation is 0.9" -my tightest double yet! No wind is essential for this fellow.
Perhaps there is a 0.8" separation somewhere in the sky.

Aubrey.

Well done Aubrey,that's approaching the Dawes limit for the apo.

Mike

Thank you, Paul, Michael and Mike. It is indeed a real test to split this one. However for even tighter doubles may require the 3mm Radian that I have. It gives me 374X. The only thing is its apparent field of view is a mere 60 degrees.

Aubrey.