1,342 reputation
1519
bio website msquant.sourceforge.net
location Århus, Denmark
age 49
visits member for 3 years, 5 months
seen Apr 12 at 10:04

(Last updated 2014-03-04.)

I am mostly interested in making scientifically important observations, like timing occultations of or by Solar System bodies and measuring variable stars.

I am also interested in citizen science projects and participate in some of them, like Galaxy Zoo.

I have been an amateur astronomer since 1975 and have worked at the European Space agency's (ESA) technical centre in Holland, ESTEC , on the ARISTOTELES mission, an earth gravity mapping mission.

Approximate coordinates: 55°20 N, 10°20 E


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Sep
8
comment Formula for Rotation curves of Galaxies
Does this assume all orbits are circular?
Aug
30
comment Why is the measured distance to the Triangulum Galaxy much more uncertain than to the Andromeda Galaxy?
@Jus12: they are in the same region of the sky, on the order of 10 degrees apart.
Aug
30
asked Why is the measured distance to the Triangulum Galaxy much more uncertain than to the Andromeda Galaxy?
Aug
30
comment What to show a beginner
M33 may be further away than the Andromeda galaxy (835 kpc ± 105 vs. 778 ± 17 kpc). "Under exceptionally good viewing conditions with no light pollution, the Triangulum Galaxy can be seen with the naked eye. It is one of the most distant permanent objects that can be viewed without the aid of a telescope.". Ref 1. Ref 2.
Aug
27
revised Two masses in deep space - collide or orbit?
Copy edited.
Aug
27
suggested suggested edit on Two masses in deep space - collide or orbit?
Aug
26
comment How can Y-dwarf stars have such a low temperature?
The discovery is elaborated in Phil Plait's blog post WISE finds coolest brown dwarfs ever seen!.
Aug
17
revised Are there free data available online from cosmology (or astrophysics) experiments that anyone can analyse?
Copy edited (incl. simplified). Added context.
Aug
17
revised Are there free data available online from cosmology (or astrophysics) experiments that anyone can analyse?
Copy edited. Added context. Dressed the naked link.
Aug
17
suggested suggested edit on Are there free data available online from cosmology (or astrophysics) experiments that anyone can analyse?
Aug
17
suggested suggested edit on Are there free data available online from cosmology (or astrophysics) experiments that anyone can analyse?
Aug
17
awarded  Critic
Aug
17
revised Does the wavelength always decrease in a medium?
Copy edited. Interpreted "PGRE" as meaning "GRE Physics Test".
Aug
17
suggested suggested edit on Does the wavelength always decrease in a medium?
Aug
14
awarded  Self-Learner
Aug
4
comment What is the strongest evidence that anti-matter exists?
Is it from decay of potassium-40?
Aug
2
comment Funding opportunities for an independent researcher
Link eso.org/sci/observing/phase1/proposalsopen.html is broken.
Jul
29
comment Are there any known neutron stars just below the Tolman–Oppenheimer–Volkoff limit?
What is the abbreviation EOS?
Jul
28
answered Where does a star's angular momentum go as its spin slows down?
Jul
23
comment Which is the heaviest present day lifter (rocket)? And is it comparable to the Saturn V rocket?
John Paul, do you mean GTO or GEO?