Compass and Scale Image of NGC 6503

 Compass and Scale Image of NGC 6503

Credits

NASA, ESA, and Z. Levay (STScI);
Acknowledgment: D. Calzetti (University of Massachusetts, Amherst), H. Ford (JHU), and the Hubble Heritage (STScI/AURA)-ESA/Hubble Collaboration

About The Object
Object Name NGC 6503
Object Description Spiral Galaxy with Active Star Formation
R.A. Position 17h 49m 26.42s
Dec. Position 70° 8' 39.73"
Constellation Draco
Distance 18 million light-years (5.5 megaparsecs)
About The Data
Data Description The optical/UV image of NGC 6503 was created from Hubble data from proposals , PI: D. Calzetti (University of Massachusetts, Amherst), et al. and , PI: H. Ford (JHU) et al.
Instrument HST>ACS/WFC and HST>WFC3/UVIS
Exposure Dates April 21, 2003 and August 21, 2013
Filters F658N (H-alpha+[N II]), F275W (UV), F336W (U), F438W (B), F555W (V), and F814W (I)
About The Image
Color Info This image is a composite of separate exposures acquired by the ACS/WFC and WFC3/UVIS instruments. Several filters were used to sample various wavelengths. The color results from assigning different hues (colors) to each monochromatic (grayscale) image associated with an individual filter. In this case, the assigned colors are: Pink: F275W (UV) Purple: F336W (U) Blue: F438W (B) Green: F555W (V) Red: F814W (I) Red: F658N (H-alpha+[N II])
Compass Image Compass and Scale Image of NGC 6503
About The Object
Object Name A name or catalog number that astronomers use to identify an astronomical object.
Object Description The type of astronomical object.
R.A. Position Right ascension – analogous to longitude – is one component of an object's position.
Dec. Position Declination – analogous to latitude – is one component of an object's position.
Constellation One of 88 recognized regions of the celestial sphere in which the object appears.
Distance The physical distance from Earth to the astronomical object. Distances within our solar system are usually measured in Astronomical Units (AU). Distances between stars are usually measured in light-years. Interstellar distances can also be measured in parsecs.
Dimensions The physical size of the object or the apparent angle it subtends on the sky.
About The Data
Data Description
  • Proposal: A description of the observations, their scientific justification, and the links to the data available in the science archive.
  • Science Team: The astronomers who planned the observations and analyzed the data. "PI" refers to the Principal Investigator.
Instrument The science instrument used to produce the data.
Exposure Dates The date(s) that the telescope made its observations and the total exposure time.
Filters The camera filters that were used in the science observations.
About The Image
Image Credit The primary individuals and institutions responsible for the content.
Publication Date The date and time the release content became public.
Color Info A brief description of the methods used to convert telescope data into the color image being presented.
Orientation The rotation of the image on the sky with respect to the north pole of the celestial sphere.