Meade LS8 ACF Meade 2" Diagonal Apetura 10" Tweakers Package Meade ETX-125, ETX-90 for Solar Celestron 80mm APO PST Meade SWA - 34mm,28mm,24mm,20mm Brandon 32mm, 16mm Vernonscope 40mm Erfle 2" ES 14mm,11mm,6.7mm 8.8 Nagler 13mm T6, Pan 19mm Meade 12.4 Pl,9.7mm, 15mm SP Meade 2x Shorty Barlow Powermate 2.5x WO Bino Viewer, 20mm 66* pair Denkmier 2 Super System Meade Nebula Filters Meade 9x60 Bino Vivitar S1 8x42 Bino Canon T2i, 18-55mm, 50mm 1.8, 55-250mm
Quote:There is now a replacement satellite, Suomi NPP, with a better instrument, VIIRS.
Quote:I would very much like to see a new version of the "Brightness of the Night Sky" maps using current, higher resolution data, and without the restrictions on distribution and non-commercial use placed on the images from Italy.
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Quote:Quote:There is now a replacement satellite, Suomi NPP, with a better instrument, VIIRS.Sadly, better isn't the same. Using a different instrument means that it may be very hard to calibrate the two sets of measurements against each other, which is necessary to discern long-term changes.There was an issue with DMSP with saturation of sensors from bright urban areas; I don't know if that's true for VIIRS as well.
Quote:Quote:I would very much like to see a new version of the "Brightness of the Night Sky" maps using current, higher resolution data, and without the restrictions on distribution and non-commercial use placed on the images from Italy.Given the inevitable crudeness of the raw data, I think the resolution of the original atlas was just fine. You have to realize that upwelling light detected by satellites is just a proxy for actual light pollution. A spotlight pointed up looks bright to a satellite and generates little skyglow. The same spotlight pointed horizontally is invisible to a satellite and generates lots of skyglow.
Quote:As for rights, the old Light Pollution Institute was disbanded, and last I asked him, Cinzano was happy for anybody to use his data.
Quote:I asked him to generate me a map of the United States that showed areas with "no skyglow visible from light pollution".