Haedus II
Observer: GDAA
Spectrum Data
FITS Header Metadata
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| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 3532 |
| CRPIX1 | 1 |
| CDELT1 | 1.46674183791773 |
| CRVAL1 | 3819.8984375 |
| CTYPE1 | Wavelength |
| CUNIT1 | Angstrom |
| SWCREATE | RSpec 2.3.1.76 |
| VERSION | RSpec 2.3.1.76 |
| OBSERVER | DGRA |
| BSS_SITE | Sandvreten Observatory |
| BSS_INST | T41 |
| OBJNAME | Eta Aur |
| DATE-OBS | 2026-03-17T19:33:16 |
| EXPTIME | 300 |
| BSS_VHEL | 0 |
FITS Spectral Image
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Calibrated Spectrum
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Observation Image
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Metadata
| Field | Value |
|---|---|
| Object Name | Haedus II |
| Observer | GDAA |
| Site | Sandvreten Observatory |
| Equipment | T41 |
| Observation Date | 2026-03-17 19:33 |
| Julian Date | 2461117.31458 |
| Exposure Time | 300.0 seconds |
| Created | 2026-05-01 18:52 |
| Updated | 2026-05-01 18:53 |
Notes
Eta Aurigae.Since 1943, the spectrum of Eta Aurigae has served as one of the stable anchor points by which other stars are classified.[4] Eta Aurigae is larger than the Sun, with more than five times the Sun's mass and over three times its radius.[7] The spectrum of this star matches a stellar classification of B3 V,[4] which is a B-type main-sequence star that is generating its energy through the nuclear fusion of hydrogen at its core. It is a chemically peculiar star and a slowly pulsating B-type star with a primary period of 1.29 days.[6] This star is radiating 1,450 times the Sun's luminosity from its photosphere at an effective temperature of 18,660 K.[7] Based upon its projected rotational velocity of 95 km/s,[9] it is spinning with a rotation period of only 1.8 days.[17] Eta Aurigae is around 39 million years old. (Wikipedia)