Changes between Version 17 and Version 18 of PS-vs-SDSS

Timestamp:

Dec 7, 2016, 7:42:13 PM (10 years ago)

Author:

ehsan

Comment:

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PS-vs-SDSS

@@ -16 +16 @@
  - The same plots for r-band
 
- [[Image(delta_r_r.png, 700px)]]  [[Image(delta_r.png, 1000px)]] 
+ [[Image(delta_r_r.png, 700px)]]  [[Image(delta_r.png, 700px)]] 
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  - This plot compare g-r colors in terms of size. No correlation with galaxy size is apparent. The color discrepancy is roughly around 0.1 mag. Since SDSS photometry accuracy is around 0.05 mag at best (color accuracy of ~0.07), then this plot indicates a color accuracy of about 0.15 mag at best. 
@@ -24 +24 @@
 
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- -  
+ -  This shows the g-band image of PGC90968 (RA:149.70750 deg DEC:0.83650 deg). Left: Pan-STARRS postage-stamp image. Clearly you can see the footprint of each individual chip (2.5*2.5 arcmin**2). Also there is dark area on top of the galaxy which passes through the galaxy. Right: SDSS data for the same galaxy.
 
  [[Image(demo1.jpg, 700px)]]  
 
-
- [[Image(demo2.jpg, 700px)]] 
+ - The i-band image of PGC59376 (RA:254.78625 DEC:28.99200). There are a few odd dark region passing through the galaxy. the background noise is not uniformly distributed. Dark edges around the galaxy indicate background over subtraction. These feature are more-or-less available in most cases and that's the reason Pan-STARRS returns fainter results.
+ [[Image(demo2.jpg]] 
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