Antares, Grafias, Sabik & Tau Oph - a hard night's graft!

[Dennis]

Hello,

Here are another 4 beautiful sets of multiple stars; Antares, Grafias, Sabik and Tau Oph. I finally got below 1".

I was hampered by the persistent jet stream so again found myself with only a handful of frames to select, via Registax, from avi files of 1600 frames each. I was almost thrown, initially confusing Grafias with Graffias, both in Scorpius!

Sabik is barely resolved at 0.63” and SkyTools informs me that the Dawes limit for the M180 is 0.6”, so there is more to discover yet, when the jet stream finally abates and better seeing returns to the skies of Brisbane. This has been my hardest day at the doubles office so far.

Cheers

Dennis

[h0ughy (David)]

very nice Dennis, btw, when is the 36th of July?

[Dennis]

Originally Posted by h0ughy

very nice Dennis, btw, when is the 36th of July?

Thanks Dave - I'll have to have strong words with Mike about the IIS server date/clock.....

Cheers

Dennis

[leon]

Very nice Dennis, that looks very effective, well done.

Leon

[davidpretorius]

i really respect your work dennis.... it is really top stuff

[Ric]

They are fantastic Dennis, I didn't think that the Antares companion was even able to be imaged.
That's the first time I have ever viewed it.

Very nice

[ballaratdragons (Ken)]

Geez, thats keen!

Well done Dennis! Interesting doubles that I have never seen.

Nicely presented again too

36th July

[Dr Nick (Nick)]

Thats great! Nice colours!

[richardo (Rich)]

Cool Dennis,
I'm enjoying your double star round ups!
Great to see Antares' companion.

Keep 'em coming.

cheers
Rich

[Dennis]

Thanks guys. These are quite interesting critters that seem to have captured my interest right now. Hopefully when the jet stream settles down and we get some better seeing, I'll be able to image some closer doubles.

At the moment, if I try to capture anything below about 50 deg altitude, I can see the blue and red part of the star light separating due to atmospheric diffraction and this makes it difficult to get a clean split between the components.

Cheers

Dennis