WR 1
Observer: GDAA
Spectrum Data
FITS Header Metadata
Show FITS Header
| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 2774 |
| CRPIX1 | 1 |
| CDELT1 | 1.44384545519857 |
| CRVAL1 | 3797.88159179688 |
| CTYPE1 | Wavelength |
| CUNIT1 | Angstrom |
| SWCREATE | RSpec 2.1.1.18 |
| VERSION | RSpec 2.1.1.18 |
| OBSERVER | HLAD |
| BSS_SITE | Sandvreten Observatory L11 |
| BSS_INST | T41 |
| OBJNAME | WR 1 |
| DATE-OBS | 2025-12-20T20:38:33 |
| EXPTIME | 1800 |
| BSS_VHEL | 0 |
FITS Spectral Image
Click image to open in new tab for zooming
Calibrated Spectrum
Click image to open in new tab for zooming
Observation Image
Click image to open in new tab for zooming
Metadata
| Field | Value |
|---|---|
| Object Name | WR 1 |
| Observer | GDAA |
| Site | Sandvreten Observatory |
| Equipment | T41 |
| Observation Date | 2026-01-25 11:36 |
| Julian Date | 2461065.98333 |
| Created | 2026-01-25 11:36 |
| Updated | 2026-02-11 16:09 |
Notes
From Wikipedia: WR 1 is a Wolf-Rayet star located around 10,300 light years away from Earth in the constellation of Cassiopeia. It is only slightly more than twice the size of the sun, but due to a temperature over 100,000 K it is over 758,000 times as luminous as the sun. Although WR 1 has been recognised as a Wolf-Rayet star since the 19th century,[9] the WR 1 designation does not indicate that it was the first to be discovered. Ordered by right ascension, WR 1 is the first star in the Seventh Catalogue of galactic Wolf-Rayet stars.[10] WR 1 is a member of the nitrogen sequence of WR stars and has a spectrum with HeII lines much stronger than HeI lines, and NV emission more than twice the strength of NIII, leading to the assignment of a WN4 spectral type. The spectrum has particularly wide HeII, leading to the equivalent classifications of WN4-b (for broad) or WN4-s (for strong). The spectrum also includes CIV and NIV, but no hydrogen lines at all indicating that WR 1 has already expelled all of its hydrogen through its powerful solar winds