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Python controllable amateur astrophotography cameras?

I would like to read further about any successes that amateur astrophotographers (or professionals) have had with USB CCD cameras that are controlled by Python scripts. I'd like to script the setting ...
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0answers
16 views

I sighted a group of satélites moving in a interesting pattern in a way I never seen from this area where I live is this posible?

I live in the rural area of the state of São Paulo in brasil (mata atlántica). the sky is absolutely clear, when there is no clouds you see the milky way perfectly and a sky full of stars. I just ...
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0answers
25 views

I saw something move in the sky and i am not sure what it was :( [duplicate]

I saw a little light from between two stars(it had the same size as the star) moving in a straight line and then it went from one side of the moon and came out from the other end(i am not sure but i ...
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0answers
32 views

To find the temperature of star during gravitational collapse [closed]

A star has electron like gas composition which is by some constraint restricted to move in x-y plane only. If ‘ρ’ is density of the gas inside star, find the temperature during gravitational ...
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2answers
42 views

How can the radius of a star be measured using parallax?

The radius of Betelgeuse was measured using parallax. From the Wikipedia article: the estimated parallax from the Hipparcos mission was 7.63±1.64 mas, yielding an estimated radius for Betelgeuse of ...
5
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1answer
118 views

Sun, Moon: Relative Distance from Crescent?

This is more a question about the history of astronomy. It recently occurred to me that you can estimate the ratio of earth-moon and earth-sun distance in the following way: We can look at the ...
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0answers
21 views

Python interface for DMK 23U274 USB camera for astrophotography

I have access to a monochrome USB camera (DMK 23U274, The Imaging Source) and I'd like to record focal plane images from a small telescope with a python script that would control it by setting ...
3
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0answers
18 views

Superconducting space dust; what transient fields could induce persistent current loops?

Science Alert's Superconductivity Has Been Discovered in Meteorites For The First Time quotes from Superconductivity found in meteorites (Wampler et al. PNAS March 23, 2020) The paper describes the ...
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1answer
38 views

Do Satelites travel in train like formation? [duplicate]

This morning approx 5.30am i seen roughly 12 travelling in perfect formation approx 15cm apart , im 200km south of sydney Australia travelling from a north west direction
4
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1answer
101 views

How do K, F, A and B stars die?

I know that M (red dwarf) main-sequence stars slowly fade to white dwarf stars, and that G (yellow dwarf) main-sequence stars become red giants and then shed their outer layers in a planetary nebula ...
3
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1answer
45 views

How accurate should sun\moon ephemeris be for calculating eclipses?

I am writing a program to simulate eclipses for about -2000 to 6000. My question is, how accurate does my ephemeris for the sun and moon have to be to get a decent accuracy for eclipses? I currently ...
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1answer
2k views

How is Uranus' north pole defined?

The rotation axis of the planet Uranus is tilted by 98° compared to its plane of orbit. This means that the north pole of Uranus is "under" the ecliptic compared to the north pole of other planets. ...
2
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2answers
50 views

Right Ascension to Zodiac House

At the moment (01-04-2020 09:36) the Moon is situated in Gemini: "The Moon is currently in the constellation of Gemini. The current Right Ascension is 06h 37m 56s and the Declination is +23° 42' 09”."...
4
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1answer
33 views

Why is LUVOIR actively heated?

From the Wikipedia page about LUVOIR design: To enable the extreme wavefront stability needed for coronagraphic observations of Earth-like exoplanets, the LUVOIR design incorporates three ...
2
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1answer
47 views

Neutrino Modelling in Friedmann Equation

so I'm trying to model neutrinos in the Friedmann Equation. I've covered the case of the Benchmark Model where we have matter, radiation, curvature, and the cosmological constant, Lambda. I know my ...
3
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1answer
57 views

Deducing the hour based on RA

I'm making a technological project. The goal is to write a program that gets an image of the nightsky and predicts the hour in which the photo was taken. I implemented a well-known method using the ...
2
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0answers
27 views

Paper recommendations for career guidance

I'm an undergraduate student in astronomy and I'm one year from graduating, but I feel I still can't choose what career path I want to pursue. To date I've only had two courses of proper astrophysics ...
1
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1answer
19 views

Is it correct to say vertical conjunction?

This question is related to this one: Are we seeing a conjunction these mornings? Last Feb 27, the a reporter said that, the day before, at sunset, Venus and the Moon were in vertical conjunction. Is ...
5
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1answer
74 views

Astronomical Term *Mezzocielo*

What is the name of the point of intersection of the great circle passing through the celestial north pole P and the Zenith Z, with the celestial equator? (Point T in the figure) In Italian this ...
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0answers
63 views

Galaxies stay at same place but it's the space that splits the galaxies apart

Galaxies stay at same place but it's the space that splits the galaxies apart. Is my understanding correct? As per my understanding. Galaxies moving apart at high speed is due to the increase in ...
3
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0answers
33 views

What's so interesting about Coma-type galaxy clusters?

When the dynamical mass of a proto-cluster of galaxies is ~(1-2)x1014 Msolar, the proto-cluster is expected to evolve into a coma-type cluster. In almost every paper I read about the confirmation of ...
3
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1answer
94 views

Is it possible make artificial gravitational waves?

Is it possible to generate gravitational waves (creating low or high disturbance in space-time) from very heavy bodies spinning at very high speed artificially?
2
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1answer
61 views

Is this a potential planetary setup for the Alpha Centauri System?

I originally posted this on the World Building SE, but I was suggested to post it here for a better answer. I am attempting to create a [semi]plausible star system in Alpha Centauri for a series. The ...
2
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0answers
46 views

Between Mercury and Venus, which planet produces a longer transit? Assuming both planets describe same path on the solar disk

Is it even possible to give a definite answer to this question? There are a lot of factors involved in this like Earth's position and motion relative to the planets and of course their own motion and ...
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1answer
56 views

If a black hole pulls every object in the universe, why there is a light around it?

I've seen some black hole images and I've seen some movies about it e.g(interstellar). I wonder why it has a light around it. Even if I know that light can't escape through it. Can someone enlighten ...
3
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1answer
84 views

Is the equinox absolutely true east everywhere?

I've read that only only in the equinoxes do you get to see the sun rise in the exact east regardless where you might happen to be. However I think this is not absolutely true everywhere, but only in ...
16
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3answers
3k views

During an eclipse, how big is the shadow of the moon on the earth?

This picture was taken from the ISS during a solar eclipse. You can see the shadow of the Moon on the surface of the Earth. But how big is this shadow? How many kilometers is its diameter?
2
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0answers
15 views

How does the specific angular momentum - mass relation arise?

I'm reading about the specific angular momentum - mass relation of galaxies, and I'm confident I understand what the possible reasons are for the difference in specific angular momentum of ellipticals ...
10
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1answer
1k views

Replenishing hydrogen in the core of the sun

How is hydrogen supplied to the core of the sun? Shouldn't the radiative zone prevent this? Shouldn't heavier helium fill the core? How much of the hydrogen can the sun fuse?
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1answer
21 views

Distance to star using color index

I'm doing the following question: A star is observed with UBV magnitudes $m_u = 16.31$, $m_b = 14.52$, $m_v = 13.76$. Spectral analysis gives $M_{bol} = 7.31$, $BC = -1.02$, $(U − B)_0 = 1.222$. ...
4
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2answers
1k views

Can you provide a visual description of the sun rise?

The Sun rises in the east only two times a year. The other days, the Sun rises in the east, but a little bit to the north, or to the south. How can you know the degree of how much north or south it is?...
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0answers
22 views

What is the highest redshift a galaxy with a known stellar mass can be observed?

As part of my research, I would need the following information which it seems I cannot find it in literature. I would like to know what are the highest redshifts at which $10^{7}$, $10^{8}$, and $10^{...
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0answers
16 views

Where can I find initial conditions (velocities) for NASA missions?

I am trying to simulate the launch of gravity assisted NASA satellites (specifically Galileo, Cassini, and Juno), but I am struggling to find the initial conditions for my simulation. I have tried ...
5
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0answers
48 views

Why is the great red spot shrinking?

The Great Red Spot is an anticyclonic storm on Jupiter that is bigger than the Earth. Based on the Wikipedia article, it has been shrinking in size for the last 400 years, going from 41 to 16 thousand ...
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0answers
50 views

Stars moved positions [duplicate]

I have just witnessed 2 stars change positions from above the dominant star to the east of my location. Stratford-upon-Avon They moved off 1 by 1 and drifted away perfectly parallel to each other ...
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1answer
57 views

What is the precession of the star S62? [closed]

What is the angle of precession of the star S62 orbiting the Milky Way supermassive black hole?
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0answers
25 views

Moving objects in the sky tonight 27th March 2020 [duplicate]

Multiple moving objects not in a line. The are staggered single line and in groups of two or three. One or two moved downward. They had a dim light orangey colour. It was not obvious that these ...
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0answers
30 views

What were the moving lights in the sky tonight? [duplicate]

Tonight we saw moving lights in the sky south east of Orion's belt. Anyone any ideas what they were? About 20 of them all going in the same direction east.
2
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0answers
87 views

Betelgeuse problem

I've been given this problem: (a) A telescope is required to image an area of the sky of angular size 1 arc second onto a 10 mm square CCD. What focal length must the telescope mirror have to fully ...
4
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0answers
20 views

Explanation about the resonance, mean motion resonance and libration

I am studying for a project the dynamics of multi-planetary system in resonance. I have two questions about this domain. In many articles they speak about 'mean motion resonance', what is the ...
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0answers
37 views

Light brightened dimmed disappeared reappeared

My son and I saw an unusual light sit in one spot for 15-20 minutes as it got very bright and dimmed, got bright, disappeared and reappeared consistently then slowly moved north west then finally ...
2
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1answer
53 views

How does the Sky in Google Earth Pro work?

For those who don't know, Google Earth Pro has a feature where you can see what the sky should look like based on the time and geographical location. I know Google Sky says that Google Earth uses ...
10
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1answer
54 views

Determining the area of Lagrange Points

I have looked into Lagrange points a decent amount and I see many images that show the L4 and L5 locations as wide sweeping areas. Jupiter's Trojan asteroids are a good example of this. As well, L3 ...
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0answers
50 views

Alien “train” in night sky any one else seen these [duplicate]

on march 1 2020 my sister and I were out about 530am and near the big dipper stars were moving one the two one then two (* ** * **) for about 15 minutes this continues like a train moving they seem to ...
1
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1answer
29 views

What makes the coming comet increase/decrease in brightness?

I understand C/1979 Atlas Y4 is potentially going to rapidly increase in brightness and visibility to the point we can see it very well in May-ish, in the Northern hemisphere. I am wondering why it's ...
3
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0answers
69 views

Information on Planetary nebula formed from the death of our star the 'Sun'!

I want to know the expansion rate, composition, mass and density of hydrogen present of a Planetary nebula similar to that which will be formed after the death of our star the sun. Knowing these ...
16
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2answers
3k views

Has radio astronomy ever been done on objects that appear very close to the Moon? Is this avoided?

This answer to Which kinds of astronomical observations most need to avoid the Moon being up? mentions For completeness - radio, mid-infrared and mm-wave observations are unaffected (unless the ...
1
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1answer
143 views

Does rusty iron on Mars have tetanus? [closed]

Since the surface of Mars is covered with lots of iron and became red because of rustiness of iron, Source from: live.mrf.io if we do have plan to live there, can we get tetanus on those rusty thing?...
3
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1answer
50 views

Total apparent magnitude of eclipsing binary system

This is a question from the 2016 USAAAO national exam, for which no solutions are given: An eclipsing binary system has a magnitude $m_p$ = 14.2 during the primary transit and $m_s$ = 13.7 during ...
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0answers
71 views

Why does half of a planet's radius end up being the radius of the core?

This answer makes the assumption that the ratio between the radius of a planet and the radius of its core is roughly constant shortly after planetary formation. Why should this be the case? Do we know ...

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