... This was followed by conversion to magnitudes and adjustment of the U-band zero point by 0.15 magnitudes from reference to calibrated U-band magnitudes for YY Gem on either side of the continuous run. ...
... The latest estimates place it at around magnitude 2.2, almost as bright as Polaris (but allow for extinction due to the lowish altitude), and almost as bright as it has ever been! ...
... Having said that, limiting magnitude for most of the night was 3-4 looking away from ... bright meteors from mag 1 to -2.2 (Jupiter magnitude) and several brighter fireballs ...
... This was followed by conversion to magnitudes and adjustment of the U-band zero point by 0.15 magnitudes from reference to calibrated U-band magnitudes for YY Gem on either side of the continuous run. ...
... Those who attended the 'Moseley Perseid BBQ' last night were blessed with a beautifully clear sky, a magnitude -7 Iridium Flare, quite nice views of Mars later, but not too many Perseids, thanks to the almost full moon. ...
... Eg OB stars) may be missed using colour/magnitude cutoffs based on optical or infrared surveys, but they can yet be detected using "spectral energy distributions (SEDs)", which incorporate several magnitudes, representing flux density versus wavelength ...
... The occultation is partial, with 55% of Europa (magnitude 5.3)ѓЉbeing covered by Io (magnitude 5.0). ... magnitude decrease will be about 1.0 magnitudes, i.e. to 6.3,ѓЉbut that applies to the magnitude of Europa alone - if the ...
... Sometimes called a 'reverse nova', it is normally a bit brighter than mag 6, but occasionally undergoes dramatic and unpredicatble 'fades' when it can become as faint as magnitude 14 - that's a drop of eight magnitudes, or a factor of 1600 ! ...