Re: tass star 240.0543 +9.3849

[Michael Koppelman <lolife@bitstream.net>]

This was my target last night, since the last one I tried was a little too 
dim. This one, on the other hand, was almost too bright. I should have 
switched instruments and taken "V" data, but I didn't. Next time.

Anyway, here is what I got:

http://www.lolife.com/astronomy/gsc948-1004.jpg

I got another hour of data but the thing got so bright that I have to 
assume my anti-blooming gate kicked in, as I started to go over 1/2 of the 
full-well.

Clearly this is variable.

Question about my data. This has the best S/N I can get while staying 
below 1/2 of my full-well. The S/N is about 160 or so. The integrations 
were only 7 seconds, so the time resolution is probably too tight. The 
seeing was pretty crappy. The skies were clear but it was windy and the 
stars were twinkling like crazy. Do you think the large degree of scatter 
is due to the bad seeing? It seems with a S/N like I described, I should 
have less scatter than this.

Cheers,
Michael Koppelman

On Friday, June 7, 2002, at 10:23  PM, Tom Droege wrote:

> This is the first time I have met my goal of releasing a measurement 
> within 24 hours.  I could not find the star in VizieR.  At least nothing 
> seemed close to me.   This measurement is roughly 22 hours old.
>
> tass star 240.0543 +9.3849 Vmag 10.12  Imag 9.64  (mean values for 2 hour 
> run)
>
> The magnitude decreased linearly (brightened) through the run changing by 
> 0.3 mag in V and I.