My spectrum of M101 taken with 20m Skynet radio dish at Green Bank
¿ªÔÆÌåÓýBelow is my spectrum of M101 taken with 20m Skynet radio dish at Green Bank: ? ? ? 10 x 1s observations, with 10 x 1s reference samples (every other observation sample) 1.5 degrees apart. ? Peak is at -250 km/s. This matches Wikipedia record =
? The following graph is published on ResearchGate, and comes from ¡°An improved CESE method and its application to steady-state coronal structure simulation¡±, June 2013, Science China Earth Sciences 57(1). ? ? Looking at the graphs above, 250 km/s = ?5-6 R (MPc) distance from ourselves on radial line of site (rlRs). ? From Wikipedia, Distance to M101 from Earth = 20.9 ¡À 1.8 Mly (6.4 ¡À 0.5 Mpc). So, my observations match closely to published data on velocity and distance of M101. ? All those astrophotographers in my astronomy club with remote observing rigs they rent ain¡¯t seen nothing yet¡¡I¡¯ve got a 20m scope at Green Bank Observatory!!!! Yippee! ? Andy ? ? |