Microlensing Event at OGLE-2013-BLG-0341 (Hubble Image)
About This Image
Caption
A follow-up observation by NASA’s Hubble Space Telescope shows a field containing a microlensing event that was captured by the Optical Gravitational Lensing Experiment (OGLE) in 2013. This provides an example of how a Hubble image could be used to analyze future microlensing events spotted by NASA’s Nancy Grace Roman Space Telescope.
In gravitational microlensing, the gravity of a foreground object acts as a lens, magnifying and distorting the light of a background star when the two objects align in the sky.
About The Object
- Object Name
- OGLE-2013-BLG-0341
- Object Description
- Microlensed Exoplanet, Hubble Galactic Bulge Survey
- R.A. Position
- 17:52:07.49
- Dec. Position
- -29:50:46.0
- Constellation
- Sagittarius
- Distance
- The center of our galaxy is about 26,000 light-years away
- Dimensions
- This image is 1.3 arcminutes across.
About The Data
- Data Description
- These images were created with Hubble data from proposal: 17776 (S. Terry).
- Instrument
- WFC3/UVIS
- Exposure Dates
- 29 March 2025
- Filters
- F606W, F814W
About The Image
- Color Info
- These images were acquired by the WFC3/UVIS instrument on Hubble. Several filters were used to sample varying wavelength ranges. 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: Cyan: F606W and Orange: F814W
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
- Color Info
- A brief description of the methods used to convert telescope data into the color image being presented.
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