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Mar
17
asked If I have amateur astrophotography image data that might be of scientific value, what should I do?
Feb
17
awarded  Citizen Patrol
Feb
4
awarded  Teacher
Feb
4
awarded  Editor
Jan
29
awarded  Commentator
Jan
29
comment Does the gravity of the planets affect the orbit of other planets in our solar system?
@Dieudonné So what is the cause?
Jan
24
comment How will the recent appearance of a supernova, the closest in 27 years, help reduce the uncertainties in our measurements of dark energy?
Has it really been directly imaged? I didn't think HST had the angular resolution to resolve stars that far away.
Jan
15
awarded  Nice Question
Jan
14
comment Can redshift be measured using fourier?
Like this? rspec-astro.com/wp-content/uploads/2010/12/…
Jan
9
asked What is the relationship between the focal length and f number of a telescope compared to a guide scope?
Jan
6
awarded  Critic
Dec
23
comment Why are orbits elliptical instead of circular?
Circular orbits are a special case of elliptical orbits.
Dec
19
comment What can be seen with a 4.5" telescope
A big part of the answer is - What latitude are you at? The Double Cluster in Perseus is an amazing site in a small wide field scope.
Dec
11
comment Is the Jupiter-Sun system considered a binary system of some type?
Since Jupiter-Sun's center of mass lies outside the volume of the Sun, that means that the Sun moves around that center of mass All objects orbit at the barycenter between the two objects, not just Jupiter.
Dec
11
comment Is it possible to measure galactic red shift using consumer telescope equipment?
@astromax I'm looking into tracking mounts capable of the long exposures needed. I'm think you'd also need fairly long focal length, maybe a Maksutov-Cassiagrain like telescope.com/Telescopes/Cassegrain-Telescopes/…
Dec
10
awarded  Scholar
Dec
10
awarded  Supporter
Dec
10
accepted Is it possible to measure galactic red shift using consumer telescope equipment?
Dec
10
comment Is it possible to measure galactic red shift using consumer telescope equipment?
Interesting! I wonder how you would find a list of quasar coords for my latitude.
Dec
10
comment How can absolute value of azimuth exceed distance from pole?
What is the latitude of the observer?