Observation by John McCue: ES98

Uploaded by

John McCue

Observer

John McCue

Observed

2019 Oct 30 - 14:38

Uploaded

2019 Oct 30 - 14:39

Equipment

14" refl., f/4.5
Altair GPCam2224C
Auto ISO

Exposure

1 second.

Target name

ES98

Title

ES98

About this image

Files associated with this observation

IMG_1942.jpg (849.7 kB)

Like this image

David Swan, Jeremy Shears, Andy Wilson, Dr Paul Leyland, Peter Carson, Andrew Dumbleton

Comments

Dr Paul Leyland, 2019 Nov 01 - 09:22 UTC

Out of interest, how did you measure your images to determine separation and PA and, particularly, how did you estimate the accuracy to which they are made?

John McCue, 2019 Dec 02 - 10:50 UTC

Hi Paul, sorry for the delay, I've just seen your comment. I use astrometry.net to obtain a FITS image from my jpeg. I then measure the sep. and PA using Aladin, an open source professional image processor. I make ten separate measurements and calculate the statical averages. Best wishes. John.

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