[vsnet-obs 58457] GW Lib 070508

[Peter Nelson]

Target                  GW Lib

Date                    070508

Observer                Peter Nelson, Ellinbank Observatory, Victoria,
Australia

Exp                     40 sec

Filter                  V 

Chip Temp               -20

Binning                 2 x 2

Times (UT)              09:37 - 12:00

SN Comp                 615

SN Var                  73

SN Check                300

Mag Error               0.015

Std Dev comp            0.007

Seeing                  4.0 arc"

Comp                    Star 1 AAVSO chart 1514-24f

Check                   A2 0600 1789 8268

Mags Comp               V=9.365, B-V=0.0.289

Mags Check              V=10.5, B-V=1.2"              

Source mags             AAVSO, A2               

Telescope               320mm f/5 Newtonian                 

Camera                  ST8XE             

Pixel size              1.16 arc"               

Reduction               AIP4WIN V2.1.8                

Apertures               8/16/26                 

QA                      91 images rejected                  

Comments                Seeing average. Intermittent cloud & haze


 

Thanks to the AAVSO and Curry Foundation for the loan of the ST8XE camera

 

 

                        

JD    V-C   K-C               

228.90116   3.817 1.451             

228.90178   3.814 1.458             

228.90239   3.804 1.458             

228.90567   3.815 1.484             

228.91777   3.814 1.474             

228.91838   3.822 1.467             

228.91898   3.829 1.458             

228.91956   3.826 1.459             

228.92017   3.797 1.458             

228.92075   3.788 1.457             

228.92136   3.798 1.466             

228.92196   3.8   1.452             

228.92255   3.772 1.467             

228.92315   3.825 1.469             

228.92376   3.805 1.453             

228.92434   3.785 1.463             

228.92494   3.808 1.466             

228.92554   3.812 1.459             

228.92614   3.837 1.457             

228.92675   3.827 1.455             

228.92735   3.823 1.456             

228.92796   3.794 1.455             

228.92856   3.772 1.46              

228.92916   3.783 1.454             

228.92977   3.769 1.469             

228.93037   3.804 1.468             

228.93096   3.794 1.462             

228.93158   3.785 1.459             

228.9322    3.777 1.458             

228.9328    3.773 1.463             

228.9334    3.782 1.463             

228.93401   3.773 1.457       

228.93462   3.78  1.457       

228.93523   3.783 1.454       

228.93583   3.755 1.46        

228.93644   3.773 1.462       

228.93705   3.792 1.473       

228.99866   3.857 1.461       

228.99928   3.86  1.467       

228.99989   3.89  1.477       

 

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