# Astronomy (ASTR) — Fall 2025 schedule

Sierra College · 20 sections · Seat counts as of 2026-10-14

Source: https://ss.oci.sierracollege.edu/StudentRegistrationSsb/ssb/term/termSelection?mode=search

Course descriptions: 2025-2026 catalog, /c/sierra-college/catalog/2025-2026/courses/astr.md

## ASTR 0002 — Introduction to Planetary Systems (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 80550 | 100 | In person | Tue/Thu 9:30–10:20am, S 202; Tue 2:00–3:05pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | David E. Dunn | 6 of 20 open |
| 80552 | 110 | In person | Mon 12:30–1:35pm, St-2 * Inactive Sp2026 002; Tue/Thu 12:30–1:20pm, S 202 | Aug 18–Dec 13 | Barry A. Rice | 4 of 20 open |
| 83535 | 112 | In person | Tue/Thu 12:30–1:20pm, S 202; Wed 12:30–1:35pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Barry A. Rice | 3 of 20 open, 1 waitlisted |
| 80931 | 120 | In person | Tue 5:30–6:35pm, St-2 * Inactive Sp2026 002; Tue 6:45–8:35pm, S 202 | Aug 18–Dec 13 | Josh S. Wormley | 4 of 20 open |
| 80553 | 805 | Online anytime | Online, no set time | Aug 18–Dec 13 | Nancy L. Montague-Archer | 8 of 40 open, 8 waitlisted |
| 82942 | 900 | In person, College Career Access Pathways | Mon/Wed/Fri 8:30–9:45am, Center High School (Sep 8–Dec 12); Mon/Thu 8:30–9:45am, Center High School (Nov 10–Nov 13); Tue/Thu 8:30–9:45am, Center High School (Aug 26–Dec 4); Wed/Fri 8:30–9:45am, Center High School (Aug 20–Aug 22) | Aug 20–Dec 12 | Kevin S. Lobbestael | 30 of 36 open |

## ASTR 0005 — Introduction to Stars, Galaxies, and the Universe (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 80932 | 100 | In person | Mon/Wed 2:00–2:50pm, S 202; Wed 3:30–4:35pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | David E. Dunn | 5 of 20 open |
| 83516 | 102 | In person | Mon/Wed 2:00–2:50pm, S 202; Mon 3:30–4:35pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | David E. Dunn | 8 of 20 open |
| 80585 | 105 | In person | Tue/Thu 8:00–8:50am, S 202; Tue 9:30–10:35am, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Barry A. Rice | 1 of 20 open |
| 80555 | 110 | In person | Tue/Thu 8:00–8:50am, S 202; Thu 9:30–10:35am, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Barry A. Rice | 5 of 20 open |
| 80554 | 805 | Online anytime | Online, no set time | Aug 18–Dec 13 | Daniel R. Hale | 15 of 40 open, 10 waitlisted |
| 83904 | 890 | Online anytime | Online, no set time | Oct 20–Dec 13 | Daniel R. Hale | 22 of 40 open, 5 waitlisted |

## ASTR 0007 — Life in the Universe (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 80582 | 101 | In person | Tue/Thu 2:00–3:20pm, S 202 | Aug 18–Dec 13 | Barry A. Rice | 13 of 40 open |

## ASTR 0010 — Elementary Astronomy (3 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 81334 | 802 | Online anytime | Online, no set time | Aug 18–Dec 13 | Daniel R. Hale | 17 of 40 open, 2 waitlisted |
| 80584 | 804 | Online anytime | Online, no set time | Aug 18–Dec 13 | David E. Dunn | 11 of 40 open, 1 waitlisted |
| 80050 | 806 | Online anytime | Online, no set time | Aug 18–Dec 13 | David E. Dunn | 12 of 40 open, 1 waitlisted |

## ASTR 0011 — Observational Astronomy (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 82433 | 100 | In person | Mon/Wed 11:00am–12:20pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Barry A. Rice | 1 of 24 open, 1 waitlisted |
| 80051 | 111 | In person | Tue/Thu 11:00am–12:20pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Barry A. Rice | 5 of 24 open |
| 80451 | 125 | In person | Wed 7:00–10:05pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | Troy M. Kuersten | 12 of 24 open |

## ASTR 0014 — Astrophotography and Imaging (1 units)

| CRN | Section | Format | Meets | Dates | Instructor | Seats |
| --- | --- | --- | --- | --- | --- | --- |
| 81879 | 101 | In person | Tue/Thu 12:30–1:50pm, St-2 * Inactive Sp2026 002 | Aug 18–Dec 13 | David E. Dunn | 8 of 24 open |