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Astroimaging Meeting

Deep Sky Imaging for Beginners will run at the start of the meeting, followed by other topics/activities as notified through the AI email mailing list.

26 September 2018 - Session 7: Image Calibration

Presentation: Image Calibration

This session will discuss the important topic of image calibration.  You may have noticed flaws in your image, such as scattered bright speckles.  These are due to dark current and may be dealt with by using so-called dark frames.  Other possible flaws are uneven illumination over the field or doughnut-shaped dark areas in your image caused by dust on your image sensor.  These defects can be corrected by the use of bias and flat frames.  This session will give you everything you need to know about image calibration.

Objective: improve image quality using biases, darks and flats
Motivation: best practice for preparing images
• image processing software, e.g. PixInsight, CCDStack
• equipment for flat frames
Covers: creating and using biases, darks and flats

Previous: Session 6: Finding and focusing and selecting a target - 22 August 2018
Next: Session 8: Where to from here? - 24 October 2018

A full list of dates for Astroimaging Meetings may be viewed at

Visitors are welcome at Astroimaging Meetings. Join the Astroimaging mailing list by sending a request to stating that you wish to join the AI list (we have other lists).

Event Date: 
Wednesday, 26 September, 2018 - 19:30
Epping Creative Centre, 26 Stanley Road, Epping NSW

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