Contains: omega Cen, NGC 5139

Image of the day 06/15/2017

Getting plate-solving status, please wait...

NGC5139 (Omega Cen) with a variety of colour calibrations (test PixInsight 1.8.5 PCC)

Technical card

Resolution: 6356x5290

Astrometry.net job: 1612241

RA center: 201.710 degrees

DEC center: -47.485 degrees

Pixel scale: 0.627 arcsec/pixel

Orientation: -179.752 degrees

Field radius: 0.720 degrees

Description

Some results from an early release of PixInsight 1.8.5 testing the new PhotometricColorCalibration tool. PCC plate solves the field and uses photometric data for stars in the field to calculate the colour parameters relative to a user specified white reference. It is very cool!

Processing is a little rough as this was an experiment and I wasn't attempting to produce a perfect image. There are 6 different revisions :
- "Classic" ColorCalibration, stars white ref
- "Classic" ColorCalibration, stars white ref, corrected for galactic dust extinction
- PhotometricColorCalibration, G2V white ref
- PhotometricColorCalibration, G2V white ref, corrected for galactic dust extinction
- PhotometricColorCalibration, average spiral galaxy white ref
- PhotometricColorCalibration, average spiral galaxy white ref, corrected for galactic dust extinction

Kudos to Juan Conejero for the very ambitious and new feature rich 1.8.5 release, and to Vicent Peris for the PCC tool and the model for extinction correction. Thanks, guys!

Comments

Author

Rick Stevenson
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Revisions

B

ColorCalibration, stars white ref, corrected for galactic dust extinction

C

PhotometricColorCalibration, G2V white ref

D

PhotometricColorCalibration, G2V white ref, corrected for galactic dust extinction

E

PhotometricColorCalibration, average spiral galaxy white ref

F

PhotometricColorCalibration, average spiral galaxy white ref, corrected for galactic dust extinction

Sky plot

Sky plot

Histogram

NGC5139 (Omega Cen) with a variety of colour calibrations (test PixInsight 1.8.5 PCC), Rick Stevenson