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Questions tagged [amateur-observing]

Questions about the observation of celestial objects by non-professional astronomers.

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-1 votes
1 answer
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Can anyone tell me what is next to the sun?

I took a 4second shot the light was to bright, even tho I could see the planets alignment on my samsung galaxy ASTRO photography I took these picture on June 2 northeast where I stay. If you can see a ...
Jessica Lopez's user avatar
7 votes
1 answer
1k views

What can I see with 10x50 binoculars in bortle class 4?

I'm just starting out with amateur astronomy and decided to buy a 10x50 Celestron Up-close G2 binoculars. I believe that tomorrow is the planet parade (the aligning of 6 planets) and I'd like to catch ...
Ryan's user avatar
  • 173
5 votes
2 answers
3k views

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

I have just found out about the alignment of Mercury, Mars, Jupiter, Saturn, Uranus, and Neptune on 2024-06-03 and I'd like to see if it is possible to watch the event from the vicinity of Prague, but ...
mishan's user avatar
  • 161
4 votes
1 answer
171 views

What is the longest time the Moon can stay in the sky?

It is known that in northern latitudes the Moon, like the sun, can remain in the sky for a long time, a week or more. What is the longest time the Moon can stay in the sky?
Vladimir Orlov's user avatar
1 vote
0 answers
51 views

Has anyone attributed a specific Baily's bead to a specific feature on the Moon? If so, when was this first done?

From Wikipedia's Baily's beads: Lunar topography has considerable relief because of the presence of mountains, craters, valleys and other topographical features. The irregularities of the lunar limb ...
uhoh's user avatar
  • 31.1k
4 votes
1 answer
145 views

Unknown satellite transit during solar eclipse on April 8, 2024

While viewing the April 8, 2024 solar eclipse from Jackson, MO, when the moon had eclipsed about 20% of the sun (the bottom-right part), my friend and I both observed with our naked eyes (behind solar ...
Tyson Williams's user avatar
3 votes
0 answers
29 views

Which distortion polynomial does the astrometry.net platesolver use?

I am investigating whether it is feasible to predict the distortion of a widefield image platesolved by Astrometry.net and. its documentation says it uses the Simple Image Polynomial to estimate ...
requiemman's user avatar
0 votes
0 answers
93 views

Largest Optical Telescope NOT at Higher Elevation

It's trivial to find the list of largest optical telescopes by aperture size. What I'm interested in is the largest optical telescope in the world, regardless of ownership or origin (amateur or ...
Chris's user avatar
  • 1
3 votes
3 answers
3k views

What is this celestial phenomenon in the video?

Some news channels published a video of an unusual phenomenon. The description says it's Comet Pons Brooks, but the comet looks completely different. There are other videos of this kind on YouTube, ...
Vladimir Orlov's user avatar
2 votes
1 answer
65 views

Tracking variable stars?

Is there a website or application I can use do track the brightness of variable stars and notify of any unusual or particularly spectacular changes. I am particularly interested in tracking the blaze ...
Harrychink's user avatar
3 votes
1 answer
422 views

Automated (and hopefully free) systems I can subscribe to sending email or SMS text message when the T Coronae Borealis Nova becomes visible?

My earlier question about predicted potentially observable events Has a gravitational microlensing event ever been predicted? If so, has it been observed? is limited to microlensing. Now I have just ...
uhoh's user avatar
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1 vote
1 answer
2k views

How to confirm that I am in the center of the path of totality for the Solar Eclipse of April 08 2024 using GPS or Android/Iphone App?

There is going to be a Solar Eclipse on April 08 2024. I will need to travel to be in path of totality from California/Florida. I am trying to get a Android or iPhone App that can tell me if i have ...
puzzled's user avatar
  • 607
2 votes
3 answers
306 views

Will there be a difference in what can be seen with a 50mm telescope and a 70 or even 80 mm one?

tl;dr Is there a celestial object which has details that can be seen clearly by a 70mm telescope, but no details at all seen by a 50mm telescope of the same make. E.g. "Jupiter has details that ...
ispiro's user avatar
  • 168
1 vote
0 answers
69 views

About telescope load

I am using planewave CDK24 Telescope. The focuser I am using is IRF90 which has maximum load capacity of 18 kg. The load that I am going to attach is 14 kg. Is this alright to attach this weight? Is ...
Tumpa's user avatar
  • 31
2 votes
1 answer
57 views

Help with position/visibility of the moon at a given date and location

I need some advice about the visibility of the moon on a given date, at a given position, for a piece of fiction I'm writing. I hope if someone could be kind enough to give me a hand. Position: Lower ...
pmdci's user avatar
  • 123
4 votes
0 answers
39 views

Can a meteor streak exhibit different colors denoting presence of more than1 element?

A meteoroid's elemental composition can be determined by the color it exhibits while burning in the earth's atmosphere which we also call a "meteor". However, is it possible that a meteor ...
Dhruv Nayak's user avatar
2 votes
0 answers
54 views

Sequence of starlike objects in the sky. What are they? [duplicate]

Tonight me and some family members saw a sequence of starlike objects moving slowly in a straight line in the night sky. As they moved, they became sparser and began disappearing (front ones first). A ...
Sam's user avatar
  • 121
0 votes
1 answer
167 views

How fast is Andromeda approaching in miles per hour

Apparently Andromeda is going to get here in 5 billion years and is 2.5 million light years away. I tried to work this out myself but I'm not sure I believe the answer..
Michael Mcgarry's user avatar
0 votes
0 answers
36 views

Should you include aberration effects during low Earth orbit observations?

I am working on calibration of some observations of low Earth orbit satellites and I am wondering should I include aberration effects? My logic is that diurnal aberration would have neglegible ...
jlipinski's user avatar
  • 297
1 vote
1 answer
140 views

sideways crescent moon but also no moon somewhere else?

I live in Sumter, South Carolina and the moon looked like a crescent moon but sideways like a bowl. But when I told my friend to look at the moon they couldn't find it and they live in Buffalo, New ...
Cakebandit06's user avatar
1 vote
0 answers
44 views

Space-based radio telescope array

I’m wondering about the abilities of a technology: You may have heard of the Square Kilometer Array. The array is focused by adjusting the timing of the individual antennas. Q: Could this array be ...
Joe D's user avatar
  • 11
1 vote
1 answer
68 views

Astro-filters for the solar system

I’m looking for set of filters for my telescope. Something for the solar system. Can you say me what is the best choice?
GeorgeBg4273's user avatar
1 vote
2 answers
357 views

Can telescopes under $200 help you see saturn clearly by eye without editing the image on a computer?

I had a telescope that only cost 50 dollars for viewing the moon and it was good for that but the planet's were always badly out of focus. I am thinking of getting a better telescope for up to $200 ...
user avatar
1 vote
0 answers
124 views

How to spot Andromeda in a 130mm telescope?

I have no problem to spot orion nebula, I mean the blue splash caused by the gas on my 130mm reflector telescope but I can’t see the same on Andromeda, what I am missing?
David Bemerguy's user avatar
2 votes
1 answer
66 views

Calculating intensity of moonlight per unit area

I have a photodiode that can measure intensity in picowatt to milliwatt range. I have a telescope of 5 inch diameter. I want to calculate the intensity of moonlight received by this area? This will ...
Tumpa's user avatar
  • 31
2 votes
1 answer
568 views

Formula to calculate time of day from shadow direction on Earth and latitude?

Web search found how to calculate shadow length and others but not my specific question. I have a photo. I found location on a map (so I know directions to objects: north/west/... and latitude). There ...
Alex Martian's user avatar
3 votes
1 answer
521 views

Why do planets just look like a dark ball in my telescope

I bought a Matsukov Cassegrain many years ago and now wanted to dust it off and use it. I had two young kids at the time so couldn't really find the time. Last night Jupiter and Saturn were both ...
Francesca Bahr's user avatar
9 votes
2 answers
3k views

Recurring flying object near the Big Dipper

This evening I was watching the Big Dipper when I noticed a bright-enough object (it looked either like a satellite or a really slow shooting star) a little above the line that connects Dubhe and ...
Emanuele Canton's user avatar
3 votes
1 answer
147 views

How is parallax really measured?

I understand the basics of how parallax is measured (i.e. two measurements 6 months apart), but I also understand that, in reality, it would have to be more complicated than that, because stellar ...
blademan9999's user avatar
7 votes
2 answers
369 views

How plausible is it for legends about the Pleiades to be this ancient?

There's a tangent at the beginning of this video on the Epic of Gilgamesh briefly talking about an oddity where most ancient cultures have stories about the Pleiades star cluster, often describing ...
redroid's user avatar
  • 171
1 vote
0 answers
47 views

Space telescope spectroscopic data for stellar classification using Wien's law

My goal is to make a simple project which consists of classifying stars by applying Wien's displacement law. I need public spectroscopic data about different stars from a space telescope, so that I ...
periwwinkle's user avatar
2 votes
1 answer
97 views

Measuring Expansion Rate of Crab Nebula with Radio Spectrum Scan

I am a high school student who is into radio astronomy, and I have the opportunity to use Green Bank’s 20m radio telescope for a practice research project. I would like to use my observations to very ...
Myra's user avatar
  • 21
0 votes
0 answers
60 views

Multiple very small, very low visibility moving stars?

I've been seeing these very small star like objects cross the sky for a couple months now. I notice that I see the them in clusters, for instance I see 2 one day and then another the next, and then I ...
Jx Ra's user avatar
  • 1
4 votes
1 answer
1k views

Do all the planets travel along the same constellations?

If humans ever moved to another planet in this solar-system, what constellations would the sun meet from that perspective? What constellations would the sun look like it is meeting from the ...
Atlas's user avatar
  • 67
0 votes
0 answers
61 views

Creating a small data pipeline

I wanted to create a small data pipeline such that it consists of images of sky in the filters F125W, F160W, F606W and F850LP. The 4 images for a single object should be in a single FITS File which ...
Astrophile's user avatar
2 votes
1 answer
269 views

How can someone take narrowband data from an OSC narrowband filter

To those who aren’t aware, an OSC narrowband filter is a filter with multiple band passes, for different emission lines. These can include a combination of Hα, Hβ, OIII, SII, and other emission lines. ...
Topcode's user avatar
  • 166
1 vote
1 answer
268 views

How to mount a 2" filter to a DSLR or mirrorless camera?

I'm considering using a 2" filter for astrophotography with DSLR and mirrorless cameras. Filters are typically measured in mm, but I understand that a "2 inch" filter is really a 48mm ...
Ana's user avatar
  • 181
3 votes
3 answers
301 views

Apart from higher costs, drawbacks of catadioptric telescope vs Newtonians?

From what I've read, catadioptric telescopes seem to be superior to reflectors. They tend to require less frequent collimations, are generally shorter in physical length, and the combination of lenses ...
scijam's user avatar
  • 113
3 votes
1 answer
77 views

Solar-winds: public NOAA data

I was searching for interesting data from space recently, and stumbled onto https://www.swpc.noaa.gov/. The long and short is that they offer some interesting solar wind data Of particular interest to ...
Kai Harris's user avatar
3 votes
1 answer
125 views

Trouble seeing Mars and Venus more than specks of light

Finally been breaking out the telescope to get a better look at things recently, and have been attempting to take advantage of Mars's and Venus's positions in the sky, but I haven't been able to see ...
BeardedChemist9's user avatar
7 votes
3 answers
1k views

Where can the public stream live astronomical data from?

I am looking to find some resources on public streaming of astronomical data. Does such a thing exist? In my explorations so far, I came across lots of nice answers linking to data in archives, but no ...
Kai Harris's user avatar
1 vote
2 answers
156 views

What stars are brighter than any more distant stars?

Which stars have a greater apparent brightness (lower apparent magnitude) than any stars that are further away? (i.e. the only stars that appear brighter than them are also closer)
blademan9999's user avatar
1 vote
2 answers
215 views

How do I find out when sidereal time was 13:30 on a certain date and location?

I live in Lehi, Utah, USA and I want to know what time of day it was on sidereal time on February 25th, 2023. Someone said it was 3:32 AM and I wanted to check and see if that was true.
Lorin Bishop's user avatar
4 votes
0 answers
91 views

What was the formation of three blinking dots, looking back using Stellarium [closed]

On February 28, 2023, we were watching the stars around 19:45 from the ground in central Netherlands when we saw three bright blinking dots moving along the sky. The dots were arranged in a triangular ...
Ivana's user avatar
  • 141
11 votes
2 answers
2k views

Small bright constellation on the photo

I did a photo of the night sky and wanted to find a constellation on it. I've suggestion that it is Delphinus constellation. Could you please help me figure it out. Also, I'm curios about good way to ...
pacman's user avatar
  • 247
2 votes
1 answer
211 views

Right ascension of a star and local sidereal time

If I'd like to watch star like Betelgeuse that has coordinates - right ascension 05h 55m 10.30536s and declination +07° 24′ 25.4304″. If my local sidereal time is 05h 55m 10.30536s does it mean that ...
pacman's user avatar
  • 247
1 vote
1 answer
94 views

Telescopes with equatorial mount and "catching" stars

I have a misunderstanding of principles behind using telescopes with equatorial mount (I don't have it yet, only trying to grasp the idea). For example, I would like to watch Betelgeuse in the ...
pacman's user avatar
  • 247
9 votes
1 answer
1k views

Identify T-shaped constellation

What is this T-shaped constellation? Never seen it before and it’s not on the map. The photo is made from south-west London facing west at 23-15 on 25.02.2023.
super.t's user avatar
  • 193
0 votes
3 answers
159 views

Did anyone else see this in the sky Thursday Feb 9 about 18:50 PST? [duplicate]

My location is Cottage Grove Oregon, and last night in the sky just south of directly overhead I saw an absolutely straight line of moving lights, each light passing my eye at 3 second intervals, ...
workisa4letterword's user avatar
9 votes
3 answers
3k views

Are the 2 planets in this image Venus and Saturn? And is this a fireball shooting star in top right of picture?

I took this picture with my iPhone on January 23, 2023 @6:01pm CST. I am in West Central Alabama very close to the Tenn-Tom Waterway a few miles from the MS state line. I was facing west-southwest. I ...
Tammy Kent's user avatar

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