DescriptionTycho catalog skymap v2.0 (threshold magnitude 4.0, low-res).png English: This is a low-resolution version of the skymap. The threshold magnitude is...
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DescriptionTycho catalog skymap v2.0 (threshold magnitude 3.0, low-res).png English: This is a low-resolution version of the skymap. The threshold magnitude is...
DescriptionTycho catalog skymap v2.0 (threshold magnitude 5.0, low-res).png English: This is a high-resolution version of the skymap. The threshold magnitude is...