MySpecZ

Upload your spectrum image, calibrate wavelength, align lines, and measure redshift.

Please upload a spectrum image to begin.

Choose Image

Drag & drop image(s) here, or click to select.

Your Spectra

X Calibration

Wavelength Unit:

Calibration Point 1 Wavelength:

Calibration Point 2 Wavelength:

Tip: Select a point, use arrow keys to fine-tune, 'd' to delete.

Spectrum Info

Cursor Wavelength: N/A

Click zoomed area to pinpoint.

Redshift (z)

Tip: Hold Shift and drag on spectrum to adjust.

Edit Emission Lines

Line Presets:

Save Current as New Preset:

Add/Edit Line Details

Name:

Wavelength (Å):

Color:

Changes to line visibility are saved when this panel is closed or a preset is saved/loaded.

© 2025 AstroMy Project led by Mingyu Li