We present B and I photometry of OGLE-TR-10 during transits of its giant planet. From our observations, we estimate the radius of the planet to be 1.16± 0.05 times the radius of Jupiter, assuming a stellar mass of M⋆ = 1.02 M⊙. This is smaller than previous estimates that were based on lower-precision data, and hence the planet is not as anomalous as was once believed. We provide updated determ...

We present near and mid-infrared photometry obtained with the Spitzer Space Telescope of ∼ 300 known members of the IC 348 cluster. We merge this photometry with existing ground-based optical and near-infrared photometry in order to construct optical-infrared spectral energy distributions (SEDs) for all the cluster members and present a complete atlas of these SEDs. We employ these observations...

We have devised an aperture photometry pipeline for data reduction of image data from the Taiwanese-American Occultation Survey (TAOS). The photometry pipeline has high computational performance, and is capable of real-time photometric reduction of images containing up to 1000 stars, within the sampling rate of 5 Hz. The pipeline is optimized for both speed and signal-to-noise performance, and ...

We compare photometry of a star-like object observed with the infrared flight detector of WFC3 (IR-4) using imagery from thermal vacuum test 3 (TV3) in subarray mode to a full-frame image of the same object. The photometry is identical within measurement uncertainty (0.5% r.m.s.) for imagery obtained with the full-frame (1024 pixels by 1024 pixels) and the 64 pixel by 64 pixel subarray. Photome...

Here we present details on the WFC3/IR spatial sensitivity test. The aim of the test is to observe a standard star in a grid pattern covering the IR detector to investigate spatial variations in the measured photometry. Any deviations from a uniform response could be due to errors in the flat field calibration file. We find that the current pipe-line IR flat-fields, which are a combination of a...

The Microvariability and Oscillations of STars (MOST) photometric satellite has already undertaken more than 64 primary campaigns which include some clusters and has obtained observations of >850 secondary stars of which ∼180 are variable. More than half of the variables pulsate, with the majority being of B-type. Since 2006 January, MOST has operated with only a single CCD for both guiding and...

Heterochromatic modulation photometry is a method for obtaining equiluminance for a pair of heterochromatic lights presented in temporal alternation. A series of fixed standard luminance/test luminance ratios are presented, and at each ratio the modulation depth of the pair is reduced in tandem until the observer reports that flicker disappears. The data can be described by a luminance contrast...

λ wavelength λmax peak wavelength µW/cm 2 microwatt per square centimeter A/Hz ½ amperes per root hertz A/W amperes per watt acv circadian action factor Ap pupil area Ar area of the image at the retina As source area B noise bandwidth [Hz] B(λ) action spectra for blue light hazard (ICNIRP) B(λ) " biological/circadian " action spectra b-lx blue-lx, unit for blue-colored illuminance BYλ hypotheti...

We have designed, constructed, and tested an InGaAs near-infrared camera to explore whether low-cost detectors can make small (≤1 m) telescopes capable of precise (<1 mmag) infrared photometry of relatively bright targets. The camera is constructed around the 640x512 pixel APS640C sensor built by FLIR Electro-Optical Components. We designed custom analog-to-digital electronics for maximum stabi...