Observed Spectral profile of NGC6826


Date & Time: Dec 27 2024, 18:00 to 18:03 JST(+0900)
Composed 2shots with 2sec. exposed
Optical: Meade 25cm(10") Schmidt Cassegrain (f=2500mm, F10.0)
with SBIG DSS7 Spectrometer
Auto-guided with Meade LX200 Equatorial+Lacerta M-GEN
Cooled CCD Camera: SBIG ST-402ME (Temp.: -20°C)
Location: Ooizumi, Hokuto city, Yamanashi pref.

Upper strip: taken spectrogram, Lower strip: stretched 3-pixel-width & pseudo-colored image


This page shows a spectrogram of the NGC6826 (Blinking nebula) and an intensity profile provided from it. The profile shows three emission lines from the Balmer series, from Hα to Hγ, of hydrogen atoms. And you can recognize that the nebula includes extraordinary strong two emission lines from the ionized oxygen atoms of O III relative to those from the Balmer series. The normal optical images of the nebula show greenish color, which is consistent with the spectrogram that hardly includes Hα composition in red light.


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