my homepage main session pageSome earlier lo-res variable star spectra of T Tau and m7.5 central star [HD19158] in NGC 7023 [Cep] prove linked with stellar nurseries or young stellar objects/ associations which include FU Ori and M42 [here].

Recorded starfield near FU Ori outlined in chart above.
Cepheus starfield - NGC 7023 spectra records faintly as a reflection
nebula eg continuum above/below central star spectrum - its spectrum to
right.
