Can you know the exact time white light photos of the Sun are taken from SpaceWeather.com?
I need it to get the latitude and longitude of the sun spots.
You can use the Stonyhurst Disk to calculate the Latitude and Longitude of groups and sunspots from your observations: (https://en.wikipedia.org/wiki/Stonyhurst_disks)
If you are using Peter Meadows software then it should be easy: (http://www.petermeadows.com/html/stonyhurst.html)
Not sure why you need to know NOAA's timing of the active regions? Perhaps explain?
thank you for your web link to excellent load of knowldge
Hi, I use Peter Meadows' software to measure the extent and separation between sunspot groups. Since I don't take pictures now, I wanted to check if the coordinates are comparable with those of the SDO sites etc.
Pictures of the sun presented at spaceweather.com
are from SDO/HMI
time stamp is barely visible in the lower left corner