Merak
Observer: GDAA
Spectrum Data
FITS Header Metadata
Show FITS Header
| Key | Value |
|---|---|
| SIMPLE | True |
| BITPIX | -32 |
| NAXIS | 1 |
| NAXIS1 | 3584 |
| CRPIX1 | 1 |
| CDELT1 | 1.46135375874355 |
| CRVAL1 | 3770.60229492188 |
| 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 | Beta UMa |
| DATE-OBS | 2026-03-03T20:14:00 |
| EXPTIME | 240 |
| 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 | Merak |
| Observer | GDAA |
| Site | Sandvreten Observatory |
| Equipment | T41 |
| Observation Date | 2026-02-03 20:14 |
| Julian Date | 2461075.34306 |
| Exposure Time | 240.0 seconds |
| Created | 2026-03-09 17:03 |
| Updated | 2026-03-09 17:03 |
Notes
Beta UMa, β UMa). In 1943, β Ursae Majoris was listed as a spectral standard for the class of A1 V.[11] When improved instruments made it possible to identify subgiant luminosity classes for early A-class stars, β Ursae Majoris was assigned that class A0 IV.[12] This was later revised to A1 IV.[4] It is considered to be a mild Am star, a type of chemically peculiar star with unusually strong lines of certain metallic elements.[13]