Deb, I have split 52 Orionis, 36 Andromedae, and Lambda Ophiuchi with my 10". I cannot recall the magnification, however. They are tight, but not exactly test doubles. The separations are 1.2, 1.2, and 1.5 second of arc. The aperture required for a split according to Dawe's Limit is only four inches for any of them. I list 32 Orionis as a test double. This is because it tests the seeing. At a separation of 1.1 seconds, it is still splitable in a 4.25 inch scope. The seeing will make it difficult, however. I have again split this fairly readily with my 10" Zeta Bootis is closer at only 0.8 seconds. The Dawe's Limit for a split on zeta is just undre 6" I have needed a significantly better night to split zeta in th 10". I have also done it with the 8" refractor. Now, if you want a real challenge, go after beta Delphini. It is listed at .65, but it was difficult at around 400 power in both the 10", the 9" Clark at Wolf Creek. Dawe's limit here requires at least 7". Brent --- UTAHDEB@aol.com wrote:
Has anybody had success splitting these doubles?:
Lambda Oph 52 Orionis 32 Orionis 36 Andromedae Zeta Bootis Lambda Cygni
If so let me know the magnification and aperature.
Thanks,
Debbie
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