Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Rev 49 - Aug 9-Sep 14, 2007 - Iapetus I1, The only close flyby of Iapetus |
Sep 7 2007, 05:46 PM
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Administrator Group: Admin Posts: 5172 Joined: 4-August 05 From: Pasadena, CA, USA, Earth Member No.: 454 |
[Moderator's note: This thread contains images from the Iapetus 2007-09-10 flyby and discussion of them. It was created by splitting this thread which contains pre-flyby discussion]
Another CL-UV3-GRN-IR1 set was posted today, though Iapetus seems to have been hiding from the green and IR filters...here's my best effort at making something from the CL and UV3 images. Lots of topography on the limb! --Emily -------------------- My website - My Patreon - @elakdawalla on Twitter - Please support unmannedspaceflight.com by donating here.
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Sep 10 2007, 01:13 AM
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Senior Member Group: Moderator Posts: 3242 Joined: 11-February 04 From: Tucson, AZ Member No.: 23 |
Just a little update. This evening, we can expect to get three observations down from the spacecraft: ISS_049SA_SATSYSFIA001_PRIME, ISS_049IA_M33HRS001_PRIME, and ISS_049IA_GLOBMAPG001_PRIME . The first two is meant as a family portrait image set. SATSYSFIA001 can be thought of as a Kodak moment-type observation as Cassini images the entire Saturnian system from near-Iapetus using both the WAC and NAC cameras. Expect lots of ring NAC images and distant images of all the major moons of Saturn, plus a Wide-angle camera overview. M33HRS001 is an Iapetus observation immediately following SATSYSFIA001. Iapetus will almost fill the view in this observation. Hopefully, the targeting will be spot-on and I can use this image for controlling the other crescent/Saturn-shine images that come down later tonight and tomorrow. This view will have a pixel scale of 1.7 km/pixel. Finally, ISS_049IA_GLOBMAPG001_PRIME will also come down. This observation is a two-frame mosaic of the crescent at 1.3 km/pixel. CLR and UV3/GRN/IR1, as well as GRN polarized, images are expected for each footprint. These images are expected between 9 and 10pm tonight (though they could show up as early as 8:30pm, depending on how the Raw images page ingests images).
Tomorrow morning images from the ISS_049IA_LIMBTOPOG001_PRIME and ISS_049IA_SATUSHINE001_PRIME observations will come down. LIMBTOPOG001 is a two-frame mosaic of the crescent at 800 m/pixel. CLR and UV3/GRN/IR1, as well as GRN polarized, images are expected for each footprint. Saturn-shine observations over both poles are also expected with this observation. Expect anywhere from 0.82 to 1 pixel of smear in these Saturn-shine images. ISS_049IA_SATUSHINE001_PRIME is also expected. This sequence includes a four frame mosaic over the the crescent, 2 three-frame mosaics in saturn-shine over the polar regions, a frame over the ridge, and a frame over the south-western part of the impact basin in northeastern Cassini Region ("Joan"). These images are expected to be on the raw images page sometime between 7:15 and 8:15 am tomorrow morning. -------------------- &@^^!% Jim! I'm a geologist, not a physicist!
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