Re: (IAAC) ANOTHER Fwd re: Who's Afraid of Einstein's Cross?
I do not know of any observations that have been sent in to either myself
or Steve Gottleib. If you want some real hardcore though wait until the
next issue of DSO when Barbara has an article on the Terzan clusters and UKS1
At 17:32 02/11/98 -0500, you wrote:
>Thought this whole thread was of interest: too bad most of it occurred
>on the "bigdob" Telescope mailing list! Here's just one sample post: if
>you respond, please put the above two addresses in your 'Cc:' line, as
>neither Andy nor Rich are currently IAAC subscribers. Also, you might
>just suggest they join us over here on the IAAC list! :)
>PS: Owen, are you aware of anyone who has reported a sighting of this
>Gravitational Lens to the Webb Society?
>Clear skies for the Leonids all!
>Lew Gramer <firstname.lastname@example.org>
>------- Forwarded Message
>Date: Sat, 31 Oct 1998 16:43:42 -0600
>From: Andy Wallace <email@example.com>
>Organization: Anderson Wallace, Jr. P.C., Attorneys
>Cc: firstname.lastname@example.org, email@example.com
>Subject: Re: Who's Afraid of Einstein's Cross?
>A psychologist friend of mine tells me the human brain has its own
>very powerful image enhancement program. He claims that there are
>many studies that establish that, for example, a more experienced
>observer would be expected to see more because his brain knows what
>it is looking for and will "fill in the gaps". Perhaps a real test
>would be to put a novice at the eyepiece and let him describe what
>he sees. Reminds me of the audiofiles who claim they can hear the
>difference between different speaker cables but can't perform in
>double blind tests. I am sure Barbara believes she saw the Cross:
>whether she actually did is very difficult to sort out.
>Clear skies, Andy
>Richard Jakiel wrote:
>> Mel Bartels wrote:
>> > ...just to point out that Einstein's Cross has been observed by
>> > with a 20", and I've heard of it being glimpsed in even smaller
>> > anyone else add to this?
>> I've heard of these observations, too. But after reading up on the
>> details of this object, I'm will doubt _all_ observations made until I
>> hear the specific details on conditions and instrumentation used. This
>> can be considered a challenge, much like one finds in professional
>> Remember, just resolving a 'multiple' star system of 17-18th+ mag. would
>> be a major challenge in itself. Add a galactic nucleus in the center,
>> plus light from the surrounding halo and you made matters worse by an
>> order of magnitude.
>> Just think about the particulars on observing the 2nd star in the ring.
>> Its only a single ~16.2 to 16.5 star in nebulousity. A full mag fainter
>> than the brightest member of the Cross. Most of 'us' would agree that it
>> would take a 18+ inch at high mag. for good confirmation. Now a 20-inch
>> can pull out 2 out of 4 components, both of which are >17 mag?
>> I'd like to review all the particulars, not just the reputations of the
>> observers. If I get the chance, I'll try this object with the Puckett
>> Observatory 24-inch at > 1000x and post my results.
>> Doing my scientific best to pose a challenge,
>> Rich Jakiel (resident heretic)
>------- End of Forwarded Message
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