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ES98

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About this observation
Observer
John McCue
Time of observation
30/10/2019 - 14:38
Object
ES98
Equipment
14" refl., f/4.5
Altair GPCam2224C
Auto ISO
Exposure
1 second.
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Comments

Xilman's picture

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's picture

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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