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View Full Version here: : Antares, Grafias, Sabik & Tau Oph - a hard night's graft!

Dennis
07-07-2007, 07:42 PM
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
07-07-2007, 07:50 PM
very nice Dennis, btw, when is the 36th of July?
Dennis
07-07-2007, 07:53 PM
:lol: :lol: Thanks Dave - I'll have to have strong words with Mike about the IIS server date/clock.....:doh: :doh:

Cheers

Dennis
leon
07-07-2007, 08:03 PM
Very nice Dennis, that looks very effective, well done.

Leon
davidpretorius
07-07-2007, 10:51 PM
i really respect your work dennis.... it is really top stuff
Ric
08-07-2007, 12:34 AM
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
08-07-2007, 12:51 AM
Geez, thats keen!

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

Nicely presented again too :thumbsup:

:lol: 36th July
Dr Nick
11-07-2007, 04:19 PM
Thats great! Nice colours! ;)
richardo
12-07-2007, 02:14 AM
Cool Dennis,
I'm enjoying your double star round ups!
Great to see Antares' companion.

Keep 'em coming.

cheers
Rich
Dennis
12-07-2007, 07:11 AM
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