Comet C/2012 S1 (ISON)
A comprehensive set of Hubble Space Telescope (HST) observations of Comet ISON has been approved, with some early programs already executed.
| ID | Proposal Type | Science Instrument | PI | epoch |
|---|---|---|---|---|
| 13197 | DD | STIS | A'Hearn | 2 May 2013 |
| 13198 | DD | WFC3 | Li | 10 Apr 2013 |
| 13199 | DD | ACS | Hines | 7 May 2013 |
| 13229 | DD | WFC3 | Levay | 30 April, 8 May 2013, more TBD |
| 13231 | ToO | WFC3 | Levay | TBD |
| 13474 | GO | ACS | Hines | TBD |
| 13478 | GO | WFC3 | Lamy | TBD |
| 13492 | GO | WFC3 | Weaver | TBD |
On July 16, 2013 the STScI Office of Public Outreach released a blog (hubblesite.org/go/ison to gather inf ormation about HST observations of Comet ISON together.
Hubble Heritage program 13229 imaged the comet on 8 May 2013, using a Wide Field Camera 3 (WFC3) subarray which is half of one of the two CCDs (2K x 2K subarray). Eight identical 171-second exposures were obtained, with one dither step to mitigate bad pixels. The long-pass F350LP filter was used to maximize the signal-to-noise in one orbit. A small offset from the nominal aperture was applied to optimally position the comet and tail within the field of view.
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| Hubble Heritage Release News Release - May 8 2013 |
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| Hubble Heritage Release News Release - July 16, 2013 |