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22 votes

Do the inner-Earth planets actually align with the constellations we see?

Yes. There is nothing magical here. If two people look at the same object from two different viewpoints, then the background they see behind the object will be different. When I'm sitting at my ...
James K's user avatar
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17 votes
Accepted

Visibility of Planetary alignment of 6 planets on 3 June 2024 from Prague

Not in a meaningful way. Saturn will be visible and a bright object in the morning sky. Mars should be visible, but by the time it rises, twilight will have started. Jupiter and Mercury are only a few ...
James K's user avatar
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13 votes

Visibility of Planetary alignment of 6 planets on 3 June 2024 from Prague

James K is correct, but I would like to add some details on the "where can I find out" part of the question. If you are ever interested in what objects (stars, sun, moon, planets, satellites,...
SpaceCore's user avatar
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10 votes

Do all the planets travel along the same constellations?

The path of the sun would be very similar. The positions of the stars are almost exactly the same. They are so far away that moving to Jupiter won't change their apparent position in any way that you ...
James K's user avatar
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9 votes

Do the inner-Earth planets actually align with the constellations we see?

You’re partly right. The imaginary line from the Sun to a planet, when extended, almost always points towards a different than as seen from the Earth. For example, in the image below (not to scale!), ...
Pierre Paquette's user avatar
8 votes
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What are the correct positions or alignment of planets in relation to each other and the Sun, is it vertical center, baseline or completely random

It is impossible to have the planets line up like in your image. This is done for illustration purposes only. If such an image was to scale, either the bodies would be extremely small and impossible ...
Pierre Paquette's user avatar
8 votes
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Are we seeing a conjunction these mornings?

Strictly speaking, a conjunction is when two objects appear at the same right ascension or ecliptic longitude. These are not exactly the same but are usually close since the major planets remain near ...
Mike G's user avatar
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7 votes
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Unable to locate Big Dipper through Polar Axis Finder

My guess is that the drawing is a "cartoon" and not to scale. The declination of Polaris is +89° 15′ 50.8″ so it is only 0.746° away from the pole, (where the "+" ...
uhoh's user avatar
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7 votes
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Jupiter-Venus conjunction is vertically aligned. I'm at 49° N. How is this possible?

A combination of several movements can lead two objects in the sky to appear vertically aligned. The planets are constantly moving relative to each other, they are orbiting on slightly different ...
FSimardGIS's user avatar
  • 1,006
7 votes
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Measuring misalignment between two positions on sky

Assuming you mean the angle between the meridian line through A and the great circle that goes through points A and B, then it goes something like this. Define vectors from the origin to A and B ...
ProfRob's user avatar
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5 votes
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How does one find out how often planets align?

If you go to Wikipedia article of conjunction, there is a formula given for the average time between two conjunctions between a planet pair in siderial years. $$\mathrm{p_{conjunction} = \frac{1}{\...
Nilay Ghosh's user avatar
  • 4,697
5 votes

What are the correct positions or alignment of planets in relation to each other and the Sun, is it vertical center, baseline or completely random

Wikipedia has a nice planetary distribution picture, but it is in 1-dimension and based off aphelion (furthest position to the sun) and perihelion (closest position to the sun) only. Unfortunately, ...
Connor Garcia's user avatar
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5 votes
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Relationship between precession and dating ancient alignments

The answer is fairly simple. It takes about 22,000 years for the Earth to perform 1 spin or move 360 degrees along it's axial precession. The 22,000 year cycle means that the temple was lined up ...
userLTK's user avatar
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5 votes

Are we seeing a conjunction these mornings?

A conjunction is when two objects have the same Right Ascension (ie the same longitude in the sky) When planets have conjunctions they will be close to each other, since they follow the ecliptic. The ...
James K's user avatar
  • 125k
4 votes

How exactly 'polar aligning' a Telescope with equatorial mount helps?

The Earth's rotation makes the stars and planets appear to move westward across the eyepiece field of a stationary telescope at about 900 arcseconds per minute. An equatorial mount can counter this by ...
Mike G's user avatar
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4 votes

Measuring misalignment between two positions on sky

The position angle P of a body ($\alpha_1, \delta_1$) with respect to another body ($\alpha_2, \delta_2$) can be calculated from $$tan(P)={sin(\Delta\alpha)\over cos(\delta_2)tan(\delta_1)-sin(\...
JohnHoltz's user avatar
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3 votes

Do the inner-Earth planets actually align with the constellations we see?

Similarly, this would apply to any planet that is closer to the sun than the Earth is: when we see that Mercury is lining up with the constellation Gemini, wouldn't it be lining up with a different ...
Acccumulation's user avatar
3 votes

Algorithm to stack astronomical images

Have a look at SCAMP for astrometry and SWarp for stacking. Like the software mentioned in the other answer, both are open source, so you can check what algorithms they use. SCAMP documentation is ...
Alex's user avatar
  • 2,285
3 votes

Algorithm to stack astronomical images

This page about a commercial product goes into some detail about their algorithm. It does the triangle matching you describe, with something like simulated annealing to get a more optimal solution. ...
antlersoft's user avatar
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3 votes
Accepted

Having some weird issues with my tracking (Advanced VX)

Looks like you have a periodic error issue. The worm period on the AVX is about 9mins I think. The issue has a period of 90sec * 6 = 540sec (9min).
James Screech's user avatar
3 votes
Accepted

Open source alternative for RegiStar (align, rotate, and combine images into single frame)

I've had success with Hugin. It's a panorama creator, but it can be used to rotate, resize, and relocate images into a coherent whole. It has a few different automated profiles, but sometimes they are ...
Tanenthor's user avatar
  • 623
2 votes
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2002 Planetary alignement

Below is an image of the solar system from that date. You can imagine drawing lines from the Earth to the various planets. You will see that Saturn, Mars, Venus and Mercury are quite closely aligned. ...
James K's user avatar
  • 125k
2 votes

Jupiter-Venus conjunction is vertically aligned. I'm at 49° N. How is this possible?

I'm even further north than you and it was vertically aligned for me at one point through that night as well, as the night sky turned Your latitude is not really relevant. It only really matters at ...
Rory Alsop's user avatar
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2 votes
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How to attach binoculars on starwatcher tracker?

This platform is similar to a German equatorial mount. Though it may seem awkward at first, it can point anywhere in the sky using only the two labeled axes. The "X" axis is for hour angle; ...
Mike G's user avatar
  • 18.7k
2 votes

How to attach binoculars on starwatcher tracker?

I own such a mount. You can turn it to wherever you want by loosening the right ascension (the black “knob” that’s touching the white part just below right of the greenish dovetail plate. You can also ...
Pierre Paquette's user avatar
2 votes
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How often are there five planet apparently aligned within 25°?

It is not super-unlikely. Let's look at alignments of the three interior planets and two superior ones. From Mars, the three interior planets (Earth Venus and Mercury) all appear to remain quite ...
James K's user avatar
  • 125k
1 vote

How to polar align equatorial mount if I see only small part of sky at south-east?

If you have sun hitting your balcony, you could draw a line of a shadow during solar noon. You can put your place here and get the exact time: https://gml.noaa.gov/grad/solcalc/ I used a black water ...
Walucas's user avatar
  • 215
1 vote

align an image to celestial North

Because you cut the image and rotated it, the old reference is no longer there. Try this and it works perfectly for me: After fixing the cutout center on original image ...
Jerry Zhang's user avatar

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