[vsnet-obs 70441] [SN] [MEAS] SN2011by

[Rick Johnson]

I was told to send the links of my images to you at this address by some 
SN hunting friends.  I've not done this before.  I was just taking a 
"pretty picture" and not using a good camera or exposures for 
photometric work.  Only the red frames were within the linear range of 
my filters and gave a result of 13.68 but at my skill level this isn't 
all that reliable.  Green was 13.1 and blue 13.2 but since I'm well out 
of the linear range of the chip these are not reliable.  Also galactic 
background made comparisons difficult at my skill level.  In any case it 
is much brighter in those colors than in red as the filters are closely 
balanced for equal exposure to the CCD.  Taken 2011/05/26.208 UT from 
47.06N (mid point of 40 minutes of luminance data) with a 14" LX200R on 
a Paramount ME, 4 10' L exposures.  2 10' of each RGB color with an 
STL-11000XM.  Full image: 
http://www.spacebanter.com/attachment.php?attachmentid=3556&stc=1  
cropped image enlarged to 0.8" per pixel, 
http://www.spacebanter.com/attachment.php?attachmentid=3558&d=1306610995 
Both images G2V color balanced.  Magnitude estimates before any 
processing except normal darks and flats.

If I was wrong to send this please let me know so I don't screw up again.

Rick