Astronomy and Astrophysics – Astrophysics
Scientific paper
2005-02-21
Astronomy and Astrophysics
Astrophysics
11 pages, 6 figures
Scientific paper
Saturated stellar images on digitised photographic plates are many times greater in area than the `seeing disk' seen in unsaturated CCD images. Indeed the flux profile of a bright star can be traced out for several degrees from the star's centre. The radius of the saturated stellar image can often be directly related to the magnitude of the star, a fact well known and exploited in iris photometry. In this work we compare the radial flux profile of stars in the approximate range B ~9 to ~13 mag, obtained from scans of plates from the Bamberg Sky Patrol archive, with a profile of the form measured by King. We show that simple aperture photometry of saturated stellar images, obtained from photo-positives of scanned photographic plates, yield data that are in agreement with simulations using a (saturated) synthetic stellar radius profile. Raw plate magnitudes from this aperture photometry can be easily and satisfactorily transformed to standard magnitudes, as demonstrated in a recent study carried out by the current authors.
Borisova Ana P.
Coates D. W.
Innis John L.
Tsvetkov Milcho K.
No associations
LandOfFree
Aperture Photometry of Saturated Star Images from Digitised Photographic Plates does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aperture Photometry of Saturated Star Images from Digitised Photographic Plates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aperture Photometry of Saturated Star Images from Digitised Photographic Plates will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-197035