We have adjust the camera focal length as 3.91m.
With exposure time as 2s, we took the picture for ‘Tycho 3156:1799′(RA 20:21:35.192 DEC +40:26:04.7).
The 1st pic shown here is the RGB image of Tycho 3156_1799 by combining the red, green and blue image together. 2nd one is with the filter ‘clear’.
It’s V405 CYG observed in 2003-10-13 19:26 with no-filter which is shown in the figure 3.
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