British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member pages
Terms of use

Dave Smith

Up until Dec 2016 my main interest was imaging and in particular narrow band images of nebula. Since then I have developed an interest in variable star observing using my CCD camera.

Local society membership: Castle Point Astronomy Club

2018 Oct 11

2018 Sep 3

2018 Apr 23

2018 Mar 19

2018 Jan 20


2017 Sep 18

2017 Sep 13


2017 Sep 8

2017 Aug 6

2017 Aug 3

2017 May 28


2017 May 9

14:17 UTC

The data for the following phase diagram for the binary star TZ Lyr was collected during 7 clear nights between 11 April and 2 May 2017.

The two stars comprising this binary orbit around each other with a period of approx 12 hours (12.69)

Images of the star field were 60s duration and one taken around every 2 minutes. The images were standardised and processed in the free software Muniwin which produces file suitable for uploading to the BAA database or the aavso database.

The phase diagram was produced using Peranso software.


Copyright of all images and other observations submitted to the BAA remains with the owner of the work. Reproduction of the work by third-parties is expressly forbidden without the consent of the copyright holder. For more information, please ask a question in the Website Help section of our Forum.