131a132,134 >

>        UT June 22, 2014  5:00:39
>    
132a136,138 >

>         2456830.70878
>    
133a140,142 >

>         30 seconds
>    
134a144,146 >

>         Clear
>    
136a149,151 >

>       (107, 42)         
>    
180a196,198 >

>       184.9   15.8
>    
206a225,227 >

>        similar, but with smaller stdev
>    
258a280,282 >

>      the master frame is smoother and less noisy
>    
272a297,299 >

>         mean 184.1   stdev 13.7
>    
274a302,304 >

>         mean about the same, stdev slightly smaller
>    
311a342,344 >

>         mean 208.3   stdev 135
>    
313a347 > mean slightly larger, stdev MUCH larger due to hot pixels 361a396,398 >

>       brighter near center, both large and small "donuts" due to dust
>    
416a454,457 >

>       the master flatfield is less noisy, and the shadows are 
>             much more clearly defined
>    
550a592,594 >

>        reasonable values are roughly  5, 10, 20
>    
561d604 < < 568,569c609 < the three boxes near the top of the window < (the ones labelled "Fixed/Base radius ..."). --- > the three boxes at the top of the window. 572,574c612 < Next, make sure that the checkboxes < and radio buttons < match the values shown --- > Next, make sure that the checkboxes match the values shown 633c671 < enter "10" into the "Count" box (labelled "Number of images" in some version) --- > enter "10" into the "Number of images" box, 637,638d674 < You can move the horizontal slider bar under the image to the left or right < to display different images in the sequence. 686,687d721 < All you have to do is left-click on the star "T1" in each image, < and AIJ will do the rest. 785a820,821 > > 793a830,831 > > 798a837,847 >

>             Star    RA           Dec           B          V
>             ----------------------------------------------------
>             C2   21 54 59.24   +26 39 11.9    12.632    11.863
> 
>             C3   21 55 20.24   +26 44 32.2    13.203    12.335
> 
>             C4   21 54 54.47   +26 44 34.9    13.192    12.555
>             ---------------------------------------------
>     
> 806a856 > 845d894 < 858a907 > 860a910,912 >

>         period is about 0.06 days  =  1.44 hours  =  86 minutes
>    
863a916,926 >

>         This is a cataclysmic variable star, consisting of a white dwarf
>              and an ordinary star circling each other in a tight orbit.
>              When material from the outer atmosphere of the ordinary star
>              is pulled off, it forms an accretion disk around the
>              white dwarf and shines very brightly.
>      

> One good source describing this object is > Survey of period variations of superhumps in SU UMa-type dwarf novae. VII. The seventh year (2014-2015). > See section 3.40 in particular. >