30 December 2005

30 December 2005

Observing
Location
TotL
Observational
Period
1900-2145 EST
Atmospheric
Conditions
The temperature was only down to freezing but it felt colder since it is humid. There was a light but bothersome wind blowing out of the N-NE. It started out clear with only a few small and widely isolated cumulus clouds passing to the east. By 2200 EST the clouds were startin to fill in from the west. The sky wasn't a (Manhattan) dark sky even though it is nearly new moon. I didn't notice any boiling but then the Sun and Moon are the only objects I normally detect it on.
TransparencyFair
SeeingGood

CSC was predicting clear skies, average transparency and poor to average seeing.

Clear Sky Clock graphic
I think the afternoon forecast was optimistic and even the update I got when I got home doesn't show the clouds arriving to early tomorrow morning. CSC was predicting clear skies, average transparency and poor to average seeing.

Clear Sky Clock graphic

I think the NOAA forecast was a little better for today. But it doesn't look like there will be any stargazing for New Years Eve.

NOAA graphic

Instruments Canon 15x50 Image Stabilized binocular - Charlie SAR: Coulter CT-100 - Charlie
Observing
Party
Charlie Ridgway

Target(213) Lilaea occults HIP 2482
ConstellationCet
CategoryOccultation
Time30Dec05; 2114 EST
CommentsI arrived in the park at 1900 EST and spent an hour searching for the target star. Diphda was the only star I could see naked-eye in the gegenschein of Times Square and upside-down star hopping is still new to me so I still hadn't found the star by 2000 EST. But by then the sky had rotated enough that Deneb Kaitos Shemali was visible and the hop from there was a breeze.

Next I started working on the short wave radio and digital recorders next. Everything had been tested out and was supposedly working but I guess the radio batteries were in marginal condition and couldn't stand up to another night of freezing temperatures. The radio would shut down after a few of seconds. And the pouch with all the spare batteries was at home. I compared my PDA clock with the digital clock on a building and my pocket watch ang got three different times. Since the PDA is supposedly synchronized with my desktop which is synchronized with a time server I figured it would be the most accurate and decided to start my observing run based on it. It was also the most advanced time.

For the next hour I cranked on the geared head of my tripod every couple of minutes and still had the target star in the FOV at 2100 EST. I noted the time when my PDA clock and the building clock changed minutes on a digital recorder and started observing around 2110 EST. I figured I could back out a crude timeframe for the event and at least get its duration. Shortly I thought I saw the target star start to go dim. Then I realized all the other stars in the FOV were getting dim as well. After a couple of minutes of staring at nothing bur a dim HIP 2762 I gave up and checked the sky to find a layer of stratus covering the horizon.

Disclaimer
This is my personal record of my astronomical observations. It was written for my personal reference. The only reason it is in a blog is that a blog is a very convenient way to get the records formatted more or less uniformly and they will, hopefully, have greater longevity at Google where the servers are backed up than on my hard drive which never gets backed up. I occasionally include copyrighted material in my posts. I do this to make it convenient for me to access things I think I might want to refer to again. I think of this like making a photocopy of something I read that I put in a file where I can find it when I want it. As I understand copyright law, as explained in the DVD series Copyright Compliance by Chip Taylor Communications, this use is allowed under the Fair Use doctrine since I am not making any money on this blog, I don’t publicize the blog, and only occasionally post small excerpts of copyrighted works.


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