Asi does Antares May 18th

[asimov (John)]

C9.25/Toucam 1100X 71 frames stacked. 4/10 seeing.

[fringe_dweller]

she's split alright - well resolved John

[h0ughy (David)]

is that a star (the blue dot to the right)?

[Dennis]

Hi Asi

Mate that is not a split - that is a cleave most extraordinary. I assume you have a Barlow in the optical train? Very nice mate.

Well done

Dennis

[Dennis]

Hi Asi

Hope you don't mind, but I pumped up the blue secondary to make it more obvious as this is such a huge split.

Cheers

Dennis

[Octane (Humayun)]

John,

That is remarkable; I've always wondered where the secondary was and what it looked like. Thank you.

Well done!

Regards,
Humayun

[Lester]

Well done Mistro,

I can feel a whole new wave of photographs comming on now, perhaps a book of images of double and multiple star systems.

When I have viewed the double of Antares I would call it green how come here and others call it blue?

Good one John.

[asimov (John)]

Pity I can't get good seeing conditions here; I'm rather annoyed with the weather pattern here in SA of late. Poor old Antares was jumping all over the screen.

Yes, I used a 2X barlow with a diagonal plus an extension tube, 1100 magnification is probably a rather reserved estimate.

This amount of mag really tests out the colimation! I spent well over 1 hour tweaking it. Still not perfect but close.

I got several AV's of jupiter (not at this mag) but could not solve the onion-ring problem even with 70% gain & 45% gamma...I don't understand, but it is what it is; deleted 'em.

[davidpretorius]

asi rules on asitares!!!!!

woo hoo, excellent stuff

[asimov (John)]

No worries at all Dennis, go for your life.

The toucam is pretty limited Lester, but I may give a few more doubles a go. I've got antares,Alpha A&B (& possibly C) & sirius & her pup so far.

Thanks all.

[Dennis]

Originally Posted by Lester

Well done Mistro,
>snip
When I have viewed the double of Antares I would call it green how come here and others call it blue?

Good one John.

Hi Lester

Visually, Antares companion looks green because Antares is so bright and being red in colour, the eye is somehow fooled into seeing the much fainter companion appear as the complementary colour green. (Red/Green)

Photographically, the CCD is not fooled so the "true" colour, blue is revealed.

Cheers

Dennis

[ving (David)]

well done asi, i think you need to go for some closer ones now

[Lester]

Thanks Dennis for the explanation on Antares companion.

[RB (Andrew)]

Asi-mate well done, thanks for sharing.
So interesting to see true blue.