Comet activity on 2 August 14

Dust Jets 10 Sept 14

Polar Dust Jet and shadowed West Wall

Dust Jets 19 Sept 14

Dust Jets 24 Sept 14

Cross section of North Polar Plain with dust jets

Annotated Image of dust jets 1 of 5

The most recent 26 September14 Navcam montage image showing well-defined dust jets over the horizon, with foreground landmark features that can be used to locate the possible dust jet vents. The image is annotated with three line-of-sight features plus an overhang on the comet head region

Annotated Image of dust jets 2 of 5

The 24 September 14 Navcam montage image showing known foreground landmark features that can be used to locate the possible dust jet vents. The image is annotated with three line-of-sight features plus an overhang on the comet head region.

Annotated Image of dust jets 3 of 5

The 20 August 14 Navcam image showing known foreground landmark features that can be used to locate the possible dust jet vents. The image is annotated with three line-of-sight features plus an overhang on the comet head region.

Annotated Image of dust jets 4 of 5

The 11 August 14 Navcam image showing known foreground landmark features that can be used to locate the possible dust jet vents. The image is annotated with three line-of-sight features plus an overhang on the comet head region.

Annotated Image of dust jets 5 of 5

The 7 August 14 OSIRIS image showing the known foreground landmark features that can be used to locate the possible dust jet vents. The image is annotated with three line-of-sight features plus an overhang on the comet head region. This is the best public image of the possible source area of the Polar dust jets and the line-of-sight landmarks point to a well-defined and interesting area on the comet neck. Which, hopefully, will be imaged and released as the area becomes more active.

Dust Jets on 2 October 14

Polar dust jets in enhanced and masked Navcam image.

Navcam image of North Polar Dust Jets 10 Sept 14

Enhanced image of dust jets. The banding is a artifact of the image brightness encoding.

Image source: ESA/Rosetta

OSIRIS Wide Angle Camera image of North Polar Dust Jets 20 Oct 14

Enhanced image of dust jets showing details in shadowed part of North Polar Wall

Image Source: ESA/OSIRIS/Rosetta

OSIRIS Wide Angle Camera short exposure image of North Polar Dust Jets 20 Oct 14

Enhanced image of dust jets showing details on the North Polar Plain and in the jets

Image Source: ESA/OSIRIS/Rosetta

North Polar Plain dust jet/vent comparison

Navcam and OSIRIS images 24 Sept, 2 Oct, 20 Oct 14
The exposure for the first ORISIS image was less than 1 second
The exposure for the second ORISIS image was 18.45 seconds and was enhanced to show detail in the shadow zone.

Image Source: ESA/Rosetta

Possible Dust Jet Vent Locations

Based on OSIRIS and Navcam imagery to date, these are the probable and potential locations for Dust Jet Vents assocaieted with the North Polar Jets. Base Image is a 7 August 14 OSIRIS image.

Dust Jets on 30 October 14

Navcam Montage of Polar Dust Jets with very high phase angle with sunlight forward scattered through the dust jet. The jet is presumably being viewed broadside to the fan of dust jets.

Image Source: ESA/Rosetta/NAVCAM CC: BY-SA IGO 3.0

Dust Jets on 2 November 14

Navcam Montage of Polar Dust Jet activity with very high phase angle with sunlight forward scattered through the dust jet. Also visible is the general ice and dust debris of the coma.

Image Source: ESA/Rosetta/NAVCAM CC: BY-SA IGO 3.0

Dust Jets on 29 September 14

Enhanced OSIRIS montage of Dust Jet activity at a very high phase angle with sunlight forward scattered through the coma. Areas on night side of comet are illuminated by light from the sunlight areas of the comet. Also visible is the ice and dust debris of the coma.

This view of the comet is from the "dark" or Southern-Pole hemisphere of the comet.

Image Source: ESA/Rosetta/OSIRIS CC: BY-SA IGO 3.0
http://creativecommons.org/licenses/by-sa/3.0/igo/

Dust Jets on 4 November 14

Enhanced ESA Navcam Montage of Polar Dust Jet activity at a very high phase angle with sunlight forward scattered through the dust jet.

Image Source: ESA/Rosetta/NAVCAM CC: BY-SA IGO 3.0

Dust Jets on 17 November 14

Enhanced ESA Navcam Montage of Polar Dust Jet activity.
Image Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Dust Jets on 20 November 14

Navcam Montage of Polar Dust Jet activity with very high phase angle with sunlight forward scattered through the dust jet. Also visible is the general ice and dust debris of the coma.

Image Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Dust Jets on 1 January 2015

Enhancement of ESA montage
Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

Dust Jets on 6 January 2015

Polar Dust Jets on 6 Jan 15 A-B Image montage. Faint detail enhanced, with highlight masking.


Source: ESA/Rosetta/NAVCAM
CC: BY-SA IGO 3.0

OSIRIS Image 22 NOV 14

OSIRIS image with exposure adjusted to show the faint parts of the dust jets and coma.. This image has been processed to show fine details of the North Polar Dust Jets.

Source: ESA/Rosetta/OSIRIS
CC: BY-SA IGO 3.0

OSIRIS Image 22 NOV 14

OSIRIS image with exposure adjusted to show the faint parts of the dust jets and coma.. This image has been processed to show details of shadow of the comet on the inner coma, the faint outer details of the North Polar Dust Jets and the "winter" dark side of the comet illuminated by reflected light from the comet along with a silhouette on the lower side.

Source: ESA/Rosetta/OSIRIS
CC: BY-SA IGO 3.0

Navcam Image 10 Jan 15

This is crop of the ESA Blog Mosaic image of the 10 Jan 15 Navcam. It is enhanced to show the interplay of sunlight and shadow on the dust present in the "canyon" of the North Polar Plain as well as sunlight streaming through the dust past the jagged edge of the Major Lobe on the upper right. Note also that the lobe is silhouetted against the faint background glow od the coma in the lower right.


Source: ESA/Rosetta/OSIRIS
CC: BY-SA IGO 3.0

Dust Motes

This ESA Blog Navcam image was further enhanced to delineate dust particles and other debris in the vicinity of the Rosetta spacecraft.

This is a very crowded place !!