Questions tagged [alignment]

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3
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1answer
292 views

Unable to locate Big Dipper through Polar Axis Finder

I have recently purchased a CG-4 Polar Axis Finder for my CG-4 mount. This PAF has markings on the lens for aligning with Big Dipper or Cassiopeia, which looks like this: I have aligned the PAF to ...
5
votes
2answers
111 views

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

The very beautiful Jupiter Venus conjunction of ~ 2019-01-20 (practically something out of "2001 A Space Odyssey") is seen as "vertically aligned" in the dawn sky, Venus "above" Jupiter. See this ...
2
votes
2answers
195 views

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

What is true purpose of polar aligning? Last night, I looked at Mars. It was moving fast. I still need to adjust RA axis to track fast-moving Mars. Why the telescope didn't track it by itself?
0
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1answer
119 views

2002 Planetary alignement

In april 2002 the inner planets had aligned and this event was captured in this beautiful photo: But, according to this website simulations for the date, Jupiter was pretty much away. Is that ...
4
votes
3answers
226 views

Measuring misalignment between two positions on sky

Let's say I have the (RA,Dec) for two positions on the sky. I want to measure the position angle between these two positions. In other words, if I had the Cartesian coordinate vectors for these two ...
3
votes
1answer
252 views

Relationship between precession and dating ancient alignments

Perusing the topics here. I am convinced that this is the right place to get some answers. Although it does appear that my question should be relegated to the "childrens table". I am curious to ...
2
votes
2answers
933 views

Algorithm to stack astronomical images

I'm looking for a simple algorithm to compare astronomical images (of the same sky region) against each other, compute their movement and rotation, to finally stack them. At the moment I'm already ...
1
vote
2answers
380 views

Having some weird issues with my tracking (Advanced VX)

I need your help! I am having some weird tracking issues with my tripod (Advanced VX). When I setup and calibrated my scope yesterday I took this picture of NGC6888 (90s exposure): As you can see ...
1
vote
1answer
662 views

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

I'm looking for a free, open-source and Linux compatible alternative to the RegiStar software. I need it to automatically combine several images into a single frame, where each individual image shows ...
1
vote
1answer
37 views

How to watch at best this week's planet alignement?

I read somewhere that counting from today, five planets will be aligned during almost two weeks IIRC. The planets are : Mars, Jupiter, Saturn, Mercury and... us. I know Jupiter and Mars can be seen ...