117P/Helin-Roman-Alu |
|
|---|---|
 |
|
| 2017 November 15 11:11 UT, 4x900s, 11" SCT f/6.4, STF-8300M, | |
| © 2017 Mike Olason, Denver Colorado | |
117P/Helin-Roman-Alu |
|
|---|---|
|
|
|
| 2017 November 15 11:11 UT, 4x900s, 11" SCT f/6.4, STF-8300M, | |
| © 2017 Mike Olason, Denver Colorado | |