# Sofaer 2011: The Sun Dagger Interactive Computer Graphics Model: A Digital Restoration of a Chacoan Calendrical Site > Anna Sofaer, Alan Price, James Holmlund et al., 2011. 9 records on Mysteries Department cite it. The record of the Sun Dagger's documentation, its… Source: https://mysteriesdept.com/sources/SRC0D9KTBET0V0D/the-sun-dagger-interactive-computer-graphics-model-a-digital Publisher: Mysteries Department Licence: CC BY 4.0 (credit Mysteries Department and link the page) --- [Sources](https://mysteriesdept.com/sources)[Great houses of Chaco Canyon](https://mysteriesdept.com/mysteries/chaco-canyon)Sofaer 2011 **0** # The Sun Dagger Interactive Computer Graphics Model: A Digital Restoration of a Chacoan Calendrical Site Anna Sofaer, Alan Price, James Holmlund et al., 2011. _Contemporary Archaeologies of the Southwest, University Press of Colorado: 67-92_. Records how the site was documented: timed photographs from 1978 (Kernberger), lunar standstill photographs in 1980 and 1987, photogrammetry in 1981 and 1984, and a laser scan in 2005, combined into a 3D model that reproduces the 1978 photographs. In 1989 the middle slab was found to have pivoted 2 to 5 cm and the markings no longer formed as recorded; by 2005 it had moved 15 cm on one axis, the eastern slab 5.4 cm and the western 0.8 cm. Places the site on a south-east-facing cliff near the top of the 135 m butte. **Great houses of Chaco Canyon** Chapterdoi: **[10.5876/9781607320913.c006](https://doi.org/10.5876/9781607320913.c006)** Checked against the original0 ## What it's used for here The record of the Sun Dagger's documentation, its disturbance and its digital restoration. ## Cited by on this site 9 records [The Sun Dagger (spiral petroglyphs and three slabs on Fajada Butte)](https://mysteriesdept.com/mysteries/chaco-canyon/artifacts/ART0D9KVBXW0PTV/the-sun-dagger-spiral-petroglyphs-and-three-slabs-on-fajada) ART [A 3D model built from 1984 photogrammetry and a 2005 laser scan reproduces the 1978 photographs of the…](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVH1Y3WD0/a-3d-model-built-from-1984-photogrammetry-and-a-2005-laser) Evidence EVD [In November 1987, at the major standstill, the project photographed the moonrise shadow of the eastern slab…](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVNEJ69MJ/in-november-1987-at-the-major-standstill-the-project) Evidence EVD [The discoverers argue that the combined solar and lunar markings are unlikely without some adjustment of the…](https://mysteriesdept.com/mysteries/chaco-canyon/evidence/EVD0D9KVJRM1ZEG/the-discoverers-argue-that-the-combined-solar-and-lunar) Evidence EVD [Anna Sofaer records the light pattern on the Fajada Butte spirals](https://mysteriesdept.com/mysteries/chaco-canyon/events/EVT0D9KTP6J0MFQ/anna-sofaer-records-the-light-pattern-on-the-fajada-butte) EVT [The Solstice Project photographs the major-standstill moonrise shadow on the large spiral](https://mysteriesdept.com/mysteries/chaco-canyon/events/EVT0D9KV0PG02S9/the-solstice-project-photographs-the-major-standstill) EVT [The slabs are laser-scanned and the Sun Dagger is restored as a digital model](https://mysteriesdept.com/mysteries/chaco-canyon/events/EVT0D9KV0YA63NE/the-slabs-are-laser-scanned-and-the-sun-dagger-is-restored) EVT [The great houses of Chaco Canyon](https://mysteriesdept.com/mysteries/chaco-canyon) The mystery article MYS [Was the Fajada Butte spiral made and used as a solar calendar?](https://mysteriesdept.com/mysteries/chaco-canyon/questions/QST0D9KV4BP04RM/was-the-fajada-butte-spiral-made-and-used-as-a-solar) Question QST ## Cite it ``` Sofaer, A., Price, A., Holmlund, J., Nicoli, J., & Piscitello, A. (2011). The Sun Dagger Interactive Computer Graphics Model: A Digital Restoration of a Chacoan Calendrical Site. Contemporary Archaeologies of the Southwest, University Press of Colorado: 67-92. https://doi.org/10.5876/9781607320913.c006 ``` [Read it free at doi.org](https://doi.org/10.5876/9781607320913.c006) Key **SRC** 0D9KTBET0V0D Kind Book chapter Rights The publisher's Kept 27 Oct 2026, for editors Checked Against the published original Added by [apollo](https://mysteriesdept.com/u/apollo) The record Bibliographic records are CC0. Take this one as CSL-JSON, BibTeX or RIS. [CSL-JSON](https://mysteriesdept.com/sources/SRC0D9KTBET0V0D/the-sun-dagger-interactive-computer-graphics-model-a-digital/csl.json)