1,405 reputation
1520
bio website msquant.sourceforge.net
location Århus, Denmark
age 49
visits member for 3 years, 10 months
seen Sep 6 at 18:13

(Last updated 2014-08-23.)

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
11
comment The Pioneer anomaly finally explained?
Another quote: "Quantum vacuum fluctuations reveal themselves in the Casimir effect, the spaceship braking effect, the photon aging effect (red-shifting) and the atom orbital electron shaking effect. Quantum fluctuations affect all elementary particles, and, respectively, travelling through the fluctuating vacuum spaceships "shake" as if traveling on the uneven road, which results in their braking. "
Sep
11
comment The Pioneer anomaly finally explained?
Interesting theory. Quote from the article: "Anomalous braking was discovered for all space crafts, for which such calculations were technically possible. Moreover, there are facts confirming the braking of the asteroids as well.". Do you have a source for observational data documenting the braking of the asteroids?
Sep
10
comment Are there Trojan family or Hilda family satellites locked in Earth's orbit?
2010_TK7's Wikipedia page
Sep
8
comment Could the Schrödinger equation be nonlinear?
("fudamental" -> "fundamental")
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
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
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
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
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?
Jul
22
comment Are we capable of discovering planets in the Andromeda galaxy?
Was that based on a single microlensing event or several?
Jul
21
comment Refraction and scattered light for NLCs
Two NLC movies from 2011-07-11.
Jul
21
comment Are orbits interior to Jupiter's orbit less stable than orbits exterior to Jupiter's orbit?
Pluto's orbit was shown to be chaotic some years ago (not necessarily unstable). Does it mean Neptune's orbit is also chaotic?
Jul
21
comment Refraction and scattered light for NLCs
@Geoff Gaherty: the season started late this year. I saw some magnificent ones around 2011-07-10 and weak, but distinct ones, yesterday evening (2011-07-20T23:00Z+1) through thin clouds (only the Moon and the brightest stars were visible.)
Jul
19
comment Has a human ever perished in space?
@SB01: what is "that recent book"?
Jul
16
comment What is so special about iron?
Actually, nickel-62 is the most tightly bound nucleus (per nucleon) followed by iron-58 and iron-56. Practicalities apply, though.
Jul
13
comment Is there evidence of dark matter in our galaxy?
"distance clusters" -> "distant clusters"?
Jul
5
comment Exoplanet detection via space-based parasol
Can you move the first paragraph to a comment to Andrew's answer? This is not a forum.