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Second outburst of comet C/2017 S3 PANSTARRS, 


            José J. Chambó
Second outburst of comet C/2017 S3 PANSTARRS

Second outburst of comet C/2017 S3 PANSTARRS

Technical card

Imaging telescope or lens:GSO Newton 8" f/4

Imaging camera:Atik 383L+

Resolution: 1200x900

Dates:July 15, 2018

Frames: 3x120"

Integration: 0.1 hours

Avg. Moon age: 2.77 days

Avg. Moon phase: 8.46% job: 2158933

RA center: 66.909 degrees

DEC center: 57.325 degrees

Pixel scale: 4.296 arcsec/pixel

Orientation: 358.160 degrees

Field radius: 0.895 degrees

Locations: Hoya Redonda - Valencia (Spain), Enguera, Valencia, Spain

Data source: Traveller


Image of comet C/2017 S3 (PANSTARRS) on July 15th 2018, photographed just when was happening a second outburst and increasing suddenly its brightness from magnitude 10.5 to 8. If we compares with the image I took on day 9th we will see its coma extended the size from 3' to 4', but mainly changed its appearance much more condensed and contrasted wich reveal recent gas emission still in expansion phase. On the other hand, begins to be appreciable the developing of a ionic tail toward northwest, although appears faint and short in this image.

Telescope GSO 8" N f/3.8 & Camera Atik 383L+.
9 min. total exposure. Non-composite stacking.
Locally from Hoya Redonda, Valencia (Spain).

More info at 



José J. Chambó
License: None (All rights reserved)

Sky plot

Sky plot


Second outburst of comet C/2017 S3 PANSTARRS, 


            José J. Chambó

In these public groups

Comets Imaging