Barnard's Star
From the author of Sizing Up The Universe
TYC 425-2502-1
RA = 17h:58m:26.60s, Dec = +04d:45m:16.5s
Stack/overlay of six images taken over the course of 28 months.
Barnard's star is the jagged sequence near the center of the image.
Use "mouse over" to see dates.
Here's a close-up of five images aligned on the other stars and then stacked together.
Also shown is the best-fit regression curve.
Based on these six observations...
The measured parallax is 0.547757 arcseconds, which corresponds to a
distance of 1.832 ± 0.061 parsecs.
High precision professional measurements
give it a distance of 1.834 ± 0.001 parsecs.
The computed proper motion is a whopping 10.55 arcseconds/yr.
The professional measurement of Barnard star's proper motion is 10.37
arcseconds/yr.
For an explanation of the proper motion and parallax, see https://vanderbei.princeton.edu/images/NJP/BSaaap.pdf .
For a detailed explanation of how the best-fit curve was found, see https://vanderbei.princeton.edu/tex/BarnardStar/BS.pdf .
19:33 EDT, Oct 27, 2014
Starlight Express SXV-H9 on 10" RC
Luminance = best 121 out of 234 eight-second frames
Fat-tail Richardson-Lucy deconv
23:23 EDT, Jul 05, 2014
Starlight Express SXV-H9 on 10" RC
Luminance = best 130 out of 200 eight-second frames
Fat-tail Richardson-Lucy deconv
05:40 EDT, Apr 10, 2014
Starlight Express SXV-H9 on 10" RC
Luminance = best 90 out of 100 eight-second frames
Fat-tail Richardson-Lucy deconv
21:25 EDT, Sept 6, 2013
Starlight Express SXV-H9 on 10" RC
Luminance = best 120 out of 150 eight-second frames
Fat-tail Richardson-Lucy deconv
02:44 EDT, June 6, 2013
Starlight Express SXV-H9 on 10" RC
Luminance = best 125 out of 140 eight-second frames
Fat-tail Richardson-Lucy deconv
03:21 EDT, June 21, 2012
Starlight Express SXV-H9 on 10" RC
Luminance = best 85 out of 110 eight-second frames
Fat-tail Richardson-Lucy deconv