Blog

CCD Imaging

Bad Image Examples

This lesson provides multiple examples of poor-quality images and explains both the reasoning behind the results and some of the specific cases in which they may still be of use.

CCD Imaging

Seeing

Seeing is an important concept that describes how clear an image's subject is when viewed through the Earth's atmosphere.

Astro Catalogs

AAVSO Areas of Interest

The American Association of Variable Star Observers (AAVSO) serves as a dedicated research and outreach organization that allows both professionals and amateurs contribute to the vast and dynamic field of variable star research in countless unique ways.

Photometry

APASS

The AAVSO Photometric All-Sky Survey (APASS) is a key all-sky survey that helps various research programs measure, adjust, and standardize their photometric systems.

Photometry

Point Spread Function (PSF)

Point Spread Function (PSF) uses known optical behaviors of both stellar light and the imaging system to decrease the complexity of images and create visual separation between objects for more accurate study.

Photometry

Aperture Photometry

Aperture Photometry, key to all studies in photometry, is one of the two most common methods of measuring the flux output of a star and is the most accurate when used with non-crowded images.

Variable Stars

Group Extrinsic

The extrinsic classification refers to eclipsing, rotating, and microlensing variable stars, all of which have flux variations as a result of external stellar factors.

CCD Cameras

SLOAN ugriz Filters

One of the two standardized filter sets used for BRIEF projects, SLOAN ugriz is widely used due to its distinct, low-overlap response curves and generally flexible and efficient nature.

CCD Cameras

Linearity and Saturation

As inherent consequences of the design of CCD photon collection, pixel saturation and non-linearity are common challenges that must be carefully managed for effective scientific imaging.

CCD Cameras

Imaging Basics

This video serves as a best practices checklist for night sky imaging and outlines both the basic and more advanced methods involved with astronomical imaging.

CCD Cameras

Full Width Half Maximum

Used to determine the quality of your image, the Full Width Half Maximum (FWHM) process is used to determine the quality of images and is of particular importance in photometric and exoplanet research work. BRIEF primarily uses the OSS Pipeline to account for the FWHM process.

CCD Cameras

Camera Overview

Charged Coupled Devices (CCDs) are an integral part of astronomical imaging that utilize a matrix of electronically-measured photon counts to accurately represent an image.