Dirk Ewers - International Space Station (ISS) and Boeing STARLINER on May 22 2022

International Space Station (ISS) and Boeing STARLINER on May 22 2022  

Data for this pass:
Flight Orientation: XVV
Two Line Elements (TLE) ISS (ZARYA):
1 25544U 98067A 22142.64806713 .00008873 00000+0 16550-3 0 9991
2 25544 51.6433 103.0750 0004988 142.7123 211.6051 15.49606228341219
Elevation: 89 North (Maximum)
Distance: 424km (Minimum)
Length of Truss Structure over all (S6/S5/S4/S3/S1/S0/P1/P3/P4/P5/P6) : 100,4m = 48,8" (theoret.max.)
speed: 26.400km/Std.
time: 21:26 UTC, 2022 05 22
Observing Place: Hombressen near Kassel

Docked STARLINER-Module reflecting sunlight in bright white
(middle of frame, left of station)

Animation of best video still frames

video (MP4)
(click on image for play)

Informations about equipment :

Corrected Dall-Kirkham Telescope, diameter of main mirror : 430mm
primary focal length : 2940mm

prolongation with fluorit-flatfield-converter about factor 3
resulting in complete focal length of 9000mm

Laser Collimation before imaging
and additional collimation testing on a star

ASI CMOS color camera
1936 x 1096 Pixel, pixel size 2.9 x 2.9 micrometer
Framerate max. : 136 fps
quantum efficiency max. : 80%
exposure time min. : 1 ms

Mathis fork mount
and Astro-Physics telescope control

software - based satellite tracking
with additional live correction

refracting telescope 1040mm focal length
and DSLR camera for guiding

telemetry control of STARLINER before docking (Source: NASA)

STARLINER module right before docking to ISS (Source: NASA)

current positioning of US and russian spaceships on different docking ports
of the International Space Station (Source: NASA)

laser collimating the optical path of reflecting scope

adjustment of secondary mirror of Dall-Kirkham telescope can be done
with four collimation screws on the backside of the mirror housing

collimation on a defocused star

live-view of satellite tracking