British Astronomical Association
Supporting amateur astronomers since 1890

Secondary menu

Main menu

BAA Community Member Pages Clive Nanson
Image search



Expand image

About this observation
Clive Nanson
Time of observation
23/05/2019 - 23:23
Observing location
North West leicestershire
Canon EOS 200D
Canon EF 100mm F2.0 USM
Homemade camera drive
100 x 30 sec at F2.0, ISO 1600
Like This Image

A stack of 100 exposures taken on 2 separate nights.  The first set of 50 exposures were taken on 21-05 but due to polar misalignment, each image showed drift of about 5 pixels.  The second set of 50 exposures were taken on 23-05 and showed no drift.  Initially I just stacked the second set of 50 but I found that stacking the full 100 actually improved the individual star images, particularly in the corners (perhaps due to using Sigma-Kappa stacking?).

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 contact the webmaster.