An off-by-one error at the RA = 360° wrap in the MegaPipe tile system produced ~32 redundant tiles in the 23,114-tile list. Each overlaps two or more existing tiles and contains no new data. Above about Dec 82.5°, the default MegaPipe tile image does not cover the full tile. Neither set may enter the final or public shape catalogue; galaxies on redundant tiles would be measured twice.
The telecon did not decide when to drop them: now, from the tile list, or at final catalogue assembly. This issue is the reminder either way. Needs the tile IDs (Mike / Stephen).
Context: 15 Sep telecon notes
An off-by-one error at the RA = 360° wrap in the MegaPipe tile system produced ~32 redundant tiles in the 23,114-tile list. Each overlaps two or more existing tiles and contains no new data. Above about Dec 82.5°, the default MegaPipe tile image does not cover the full tile. Neither set may enter the final or public shape catalogue; galaxies on redundant tiles would be measured twice.
The telecon did not decide when to drop them: now, from the tile list, or at final catalogue assembly. This issue is the reminder either way. Needs the tile IDs (Mike / Stephen).
Context: 15 Sep telecon notes