Up to Galaxy/Supernova Index.

Comparison stars are from USNO-A1.0 and calculated with the formula :
Mag = 0.375*Bmag + 0.625*Rmag
Selected stars are also close to USNO-A2.0 mags shown in ( ).


NGC 3888 in Ursa Major
Mag. 12.7
Size : 1.7' X 1.3'
Distance : 100 mill l.y. ?
SN2000K is approx. mag. 18.5

Exposure time : 4 X 2 minutes
0.61m f/4 MX516 CCD
Date : 15. Mar 2000
Time : 00.15 UT.


Main Astronomical Index ( bottom ).