| Business | Phone |
| Coronado Instruments Ltd 1674 S Research Loop # 436, Tucson 85710 | (520) 740-1561 |
| Starizona 5201 N Oracle Rd, Tucson 85704 | (520) 292-5010 |
| Stellar Vision & Astronomy 1835 S Alvernon Way # 206, Tucson 85711 | (520) 571-0877 |
| Sky Works 7401 E 22nd St, Tucson 85710 | (520) 751-6752 |