CCD:
Exposure Time:
Instrument:
Focal Length:
Filter:
Guiding:
Corrector:
Raw FWHM (Seeing):
Image Processing:
Sky Conditions:
Who ?
Problems/Comments:
|
SBIG ST10 E LRGB Image
with CFW8
L=14m 2xBin, R=10m, G=10m, B=14m 3xbin
T1T 1.2m Cassegrain Telescope with the 0.5x CaF2 Focal Reducer
5100mm
CFW8 Filter
Blind guiding without any autoguider !!!
4-lens Reducer with CaF2-element
2.5 arc seconds
deconvolution, DDP
for Trebur conditions above average transparency, 5mag lim. mag.
Philipp Keller, Christian Fuchs and the T1T-Team
With about 3 Trillion solar masses this galaxy is a monster compared to our milkyway. It
is located in the center of the virgo cluster, about 55 million light years away from our
galaxy. M87 has a big halo, reaching about 1/2 degree in diameter that can be seen
in very deep exposures. The strange color of the background of the above image is
most likely not an error but the effect of this halo.
Also it contains more than 10.000 globular clusters, a lot of them can already be counted
in the above exposure. What is even more interesting is a spectacular jet of gas that
explodes with light speed from the center of M 87 and that could have been caused by a
massive black hole.
Some satellite galaxies surround M87, like NGC 4476, 4478 and NGC 448.
The extreme tracking performance of this telescope allowed to track the
telescope blind without any tracking corrections for 2m integration times. After a better
polar alignment maybe 10m will be possible.
|