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Contains:  IC 4605, NGC 6144, The star 22Sco, The star Antares (αSco)
Getting plate-solving status, please wait...
Comet 71P/Clark, 


            Björn Hoffmann
Comet 71P/Clark

Comet 71P/Clark

Technical card

Resolution: 1880x1256

Dates:May 28, 2017

Frames: 120x30" ISO1600

Integration: 1.0 hours

Flats: ~30

Avg. Moon age: 3.11 days

Avg. Moon phase: 10.55%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 4.00

Temperature: 14.00 job: 1603952

RA center: 248.512 degrees

DEC center: -25.974 degrees

Pixel scale: 6.218 arcsec/pixel

Orientation: 179.950 degrees

Field radius: 1.953 degrees


This is the super faint comet 71P/Clark with a magnitude of only 13 and a distance of 90 million km to earth. It was in my Rho Ophiuchi frame, but got lost during HLVG processing..
So here is a separate processing to highlight the comet!

Beware: The image is heavily overprocessed and I know that. It was needed to make the tiny comet visible and to make the greenish color appear.



Björn Hoffmann
License: Attribution-NonCommercial-NoDerivs Creative Commons

Sky plot

Sky plot


Comet 71P/Clark, 


            Björn Hoffmann