Quote:
Originally Posted by Saturnine
Hi JP
Out of curiosity and because I like double star observing, I had a look at Beta Ph last night or I should say early this morning. Using an 10" f6 newt on an EQ6 at 300X I would have to say splitting A / B was inconclusive. The seeing was average, maybe 5 / 10 Pickering but in moments of steadiness it seemed that there were 2 Airy discs, touching, forming the classic hourglass shape.
The quoted latest measures in the WDS are 0.6" separation so in reality to get a definite split an aperture of 12" or more would be needed, along with good seeing conditions.
|
Jeff, I put my 8" GSO f12 Cassegrain to work on Beta Ph tonight. The Seeing was pretty good here but i think I was right at the Dawes limit for my scope with that separation. The diffraction spikes did not help and the two stars are near identical magnitude. I thought I could detect elongation at 200X but would need another observer to verify that.
I did not try the 127mm iStar refractor..