Re: [TAC] More on Porrima

From: matthew marcus ^lt;mamarcus_at_lbl.gov>
Date: Mon Apr 26 2004 - 19:24:24 MST

Two Saturdays ago, at Coyote, I tried it with my C8 and got an elongation but no real split.
        mam

Steve Gottlieb wrote:
>
> In a message dated 4/26/04, Rich N. writes:
>
> > Most of the time Porrima looked very elongated. Only at
> > the best moments did it look like it was just starting to show a
> > figure 8 (slightly pinched).
> >
> > One of the people at the star party thought it was about 0.70.
> > At 0.58 I'm really happy we could tell it was a double.
>
> Coincedentally, I was also looking at Porrima last night with a 6-inch stop
> of my 18-inch Starmaster at 300x and it was clearly elongated or barely
> dog-biscuit shaped with two merged airy discs but no hint of a clean
> separation. At 0.51" and closing that's probably the best one can expect
> with that aperture.
>
> Steve
Received on Mon Apr 26 19:33:36 2004


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