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Questions tagged [amateur-observing]

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

19
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4answers
5k views

What would happen if someone had a telescope and watched Betelgeuse when it goes supernova?

Would that person go blind? Neutrino detectors and the abundance of Neutrinos would detect the upcoming visible show about 3 hours before any visible signs, so there would be time to point certain ...
1
vote
0answers
45 views

Celestron NexStar 130 SLT Computerized Telescope GoTo Not Accurate

I am trying to use a Celestron NexStar 130 SLT Computerized Telescope, but I am not able to use the GoTo function. I do the three start alignment, it confirms matches, I make sure the level is ...
0
votes
0answers
39 views

If our earth hits Jupiter would it completely explode because of its methane atmosphere? [on hold]

Considering that methane's composition in Jupiter is mere 10% or so but is it still enough to trigger a huge explosion? And is there enough oxygen(From earths atmosphere) for that to happen?
1
vote
1answer
59 views

Can't see any detail on planets with my new Celestron NexStar 130 SLT Computerized Telescope [duplicate]

Mars looks like a small white blob/circle and the same with all other planets. This is very frustrating. I've looked all over for a solution jumping from site to site and nothing. Please be different ...
3
votes
2answers
324 views

What liquids can be found in the void space?

Is there any material natural or otherwise a free floating liquid that can exist in space? https://space.stackexchange.com/questions/32274/what-liquids-last-the-longest-in-space
2
votes
2answers
60 views

How to adapt small Dobsonian to use with a tripod?

I am the owner of a small 4", f/6.3 tabletop Dobsonian telescope with a 102mm aperture and 640mm focal length. It is based on a Dobsonian mount but I would like to use a tripod instead because of ...
4
votes
2answers
54 views

Question about the relevant physical parameters to build a backyard observatory

I live in a big city: São Paulo, Brazil. I would like to build a simple telescope dome to do some amateur sky obseravtions. But the whole project lies on the viability to see something interresting ...
-1
votes
1answer
49 views

Solution for counting atmospheric layers of planets according to relational data [closed]

This math states, that by multiplying the gravitational pull (we assume square of density of the planet), by its inclination (being how high and out it goes) and subtracting that loop from the ...
-1
votes
1answer
110 views

what can i see using celestron nexstar 127SLT [closed]

I am planning to buy celestron nexstar 127SLT and I want to know what can I see using my telescope.
2
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0answers
27 views

What is the advantage of taking monochrome photographs in standard lenses

I've readen "When photographing faint objects monochrome photos will resolve more than RGB pics" Is this really a thing? If yes, how?
3
votes
1answer
53 views

Will comet 21P that just passed Earth on Sept 10 produce Draconid storm on Oct 9?

Comet 21P/Giaccobini-Zinner just made its closest pass to Earth and also made its Solar perihelion on the same day (Sept 10) which is roughly one month ahead of the annual Draconids meteor shower (Oct ...
-1
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1answer
45 views

How was calculating the celestial latitude using an astrolable of any help to sailors?

I'm sorry if this sounds like a silly question but I don't understand how measuring the location of a star would help in sea navigation.
1
vote
2answers
81 views

Amateur observing

I'm new to this could someone tell me if I'd be able to see planets with the Celestron Cometron FirstScope described as below on argos.co.uk: A compact, easy to use and powerful 76mm reflector ...
1
vote
5answers
108 views

Edu-Science telescope

I don't know much about astronomy, but my kids are asking for telescopes to view planets, stars etc. Could anyone tell me if this Eduscience telescope is any good? This kit contains a 40x with a ...
1
vote
1answer
47 views

Throughout the year, are all parts of the night sky visible from any given point on Earth?

Or are there points on Earth where certain parts of the 360° night sky are never visible throughout the whole year? Depending on the answer to this question, are there points on Earth where parts ...
1
vote
2answers
82 views

How to calculate exact angle to the moon?

I am building some device as a gift for my girlfriend. For this device to work, I need to be able to calculate the angle to which I should look towards (3D angle), in order to see the moon. This ...
2
votes
1answer
45 views

Need help with the calculations/conversion of a celestial object

I'm developing a telescope controller open-source application. I started this project with a very little knowledge of Astronomy. Basically, the app is going to send data to telescope over a wireless ...
4
votes
2answers
71 views

What are some good telescopes for a programmer? [closed]

I’ve never purchased a telescope and I was considering buying one. However, I wasn’t sure what to look for. I love to tinker and so a telescope that I can program with libraries such as SPICE would be ...
5
votes
3answers
85 views

Eyepiece diameter for small focal length planetary viewing on a large dobsonian?

I have a 12" dobsonian with a 1500mm focal length and want to do some higher magnification planetary viewing. Currently my highest magnification is ~80x via my 19mm eyepiece (calculated here), but I ...
2
votes
1answer
47 views

What are these objects near Mirach

Night sky objects always interested me, nowadays Im trying to observe and photograph some of these objects. My phone is iPhone 6S, i used SkyGuide app to find positions, NightCap to photograph. Im ...
2
votes
4answers
63 views

Why don't all perseid meteors follow the same trajectory?

Since these bits of debris crossing Earth's orbit have the same relative speed, why aren't they drawing parallel paths in the upper atmosphere? (consider one hour of observation to minimise Earth's ...
3
votes
2answers
58 views

Which lens is right to see which planets with an Orion StarSeeker 150 mm?

I'm an amateur astronomy lover and I have an Orion StarSeeker IV 150 mm, together with a bunch of lenses, which are the following: 1x 23mm (32.6x) and 1x 10mm (75x) wide-field 60-degree eyepieces 1x ...
1
vote
1answer
178 views

How bright is Comet PANSTARRS C/2017 S3 now?

The LiveScience article Incredible Hulk? Nah, This Glowing, Green Light in the Night Sky Is a Comet published just hours ago discusses Comet PANSTARRS C/2017 S3 and mentions: bright bursts ...
2
votes
1answer
62 views

Can this mirror be cleaned?

I dug up my old 6" Dobsonian telescope from storage and the mirror looks like the following: The picture is down the tube, so you can see the spider holding the secondary. To my eye, the spots look ...
2
votes
1answer
68 views

Perseid Meteor Shower Viewing events near Chicago

I'm going to be in Chicago during the weekend of Aug 11th, 2018. Can you suggest any viewing parties that are not too far away? I'm very very amateur. I don't really know too much about astronomy, ...
10
votes
3answers
1k views

Which planet or star is this?

The picture was taken with a smartphone camera at Latitude 48.860045 | Longitude: 2.366202 the 31th of July at 01h07min15s Paris time. On the left is obviously the Moon, and the lower red circle ...
2
votes
1answer
109 views

I have a Model 36050 telescope

My Model 36050 telescope came with the H6mm, H20mm and the green filtered moon lenses. It has a 360mm focal length and a 50mm diamiter. What can be seen with it?
2
votes
1answer
53 views

Beginner looking for extra eyepieces for telescope

I have a Bushnell Voyager Reflector telescope. It came with 2 eyepieces: k4mm and k20mm. And I am trying to find additional eyepieces to zoom in further on planets and stars, but the bushnell website ...
1
vote
0answers
58 views

What was that object? [duplicate]

On July 13, 2018, just after the clouds had lost their color, a bright object became visible about 20 degrees above the western horizon (there was a hill). It moved slowly east and had colors similar ...
2
votes
2answers
97 views

Can a telescope image be amplified to see more by adding distant lenses or mirrors?

Could a lens or mirror be placed in orbit on the same flight path with other parts to make a telescope or on the horizon of the moon to see farther with the Hubble?
2
votes
2answers
121 views

Struggling to use my new telescope

I recently got my first telescope, a Bushnell reflector telescope. I spent a good while setting up my alignment. And I can see the moon perfectly! I went to look at another, Mars. I got it aligned in ...
1
vote
1answer
35 views

Rising & Setting time of a star on a specific date

Given the local sidereal time (LST) of a star when it rises, how can I find out the time when it will rise (according to my watch) on a specific date?
3
votes
0answers
46 views

Unknown moving light in sky [duplicate]

On July 13, 2018, while camping in Southwest Oregon, a bright light appeared in the sky at sunset. It was much brighter than Jupiter, also visible. It was moving slowly, west to east. I estimate it ...
0
votes
0answers
35 views

Rising & Setting of a star

Let the time required for a star to reach the meridian after rising be x and the time required for a star to set after crossing the meridian be y. Will x be equal to y?
2
votes
2answers
10k views

Saw a bright orange object in the sky. What was it? [closed]

Some friends and I were backpacking in the mountains, and at night we saw a very bright orange object in the sky. It looked brighter than Venus. After a couple minutes we realized it was moving ...
2
votes
1answer
154 views

How to construct a sky map

First of all, I have very basic knowledge of astronomy so sorry if I make some mistakes in my terminology. I'd like to plot the Southern Cross. I can find the name of its 5 stars. Also, I have some ...
4
votes
1answer
289 views

What is the actual black hole merger speed?

I have seen models of 2 black hole mergers. https://www.theverge.com/2017/11/16/16665132/gravitational-waves-ligo-virgo-black-holes-merger-multi-messenger-astronomy When we see a space ship appear ...
5
votes
3answers
272 views

Why do photos of Earth always have a black background?

if we are in the milky way, and people are able to take photographs from Earth that look like this: Then how come almost all of Earth's photos look like this? In the first photo, we are seeing what ...
2
votes
0answers
50 views

How to become an astonomer? [duplicate]

I am very much interested in becoming an astronomer as a career. I know that my main focus should be in mathematics and science but; are there any specific degrees or competitive examinations I must ...
3
votes
1answer
49 views

Locating a star cluster on a Hertzsprung-Russell diagram with other color index

Recently I took pictures of the NGC 884 cluster in the B and I bands and selected some 30-what stars from them. I've reduced the data to a colour-magnitude diagram (absolute magnitude in the I band $...
6
votes
2answers
177 views

Amateur radioastronomy: dish suggestions

What kind of amateur radioastronomy can any interested citized do with: a) A 2 m dish antenna. b) A 2,5 m antenna. c) A 3 m antenna. d) A 5 m antenna. e) A >5 m <10 m antenna (likely I can not ...
3
votes
2answers
119 views

Does Polaris have a trail in the sky timelapse?

I came across few sources that claim Polaris movement cannot be observed with the naked eye. But then, I saw images of the star trails (timelapse), and they clearly show Polaris not quite at the true ...
1
vote
3answers
230 views

Photographing Venus with a phone through a telescope

I took a picture of Venus through my telescope (Celestron Astromaster 130eq) using a 10mm lens with a Barlow lens. The picture isn't really good since I took it with my phone and I still don't have a ...
1
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0answers
243 views

Brightest star in the Eastern sky 2017 in am [closed]

What is the name of brightest star in the East 2am. What does a satellite look like?
0
votes
1answer
51 views

What's that limit, where we start to see infrared galaxies?

All the nearby galaxies we see come in visible range, many are visible from ground based telescopes. And the farthest galaxy that hubble discovered recently, 13.4 billion light years away is in infra ...
3
votes
2answers
102 views

Bright light in the sky, in the '90s, what could it have been?

Sometime in the summer months during the years from 1993 to 1998, my friend and I saw what looked like a gamma-ray burst (or what looked like an artist's impression of it). It looked like a star that ...
3
votes
0answers
73 views

How to analyse Jovian signal received at 20.1 MHz using dual dipole antenna? [closed]

I have purchased a Radio Jove kit and set it up. I have also received some signals. I am using Radio Skypipe II software as discussed in this Radio Jove tutorial (see also here) with a sound card to ...
1
vote
0answers
88 views

How do I calculate the hour angle of a planet's moon from a point on that planet's surface?

I'm worldbuilding and I'm trying to construct a standing stone calendar that'll accurately denote where to look for my planet's moon at its four major phases from 53.8 degrees South. So, I need the h0,...
5
votes
1answer
135 views

Does this amateur observation hold a record even including robotic searches for supernovae?

The new paper in Nature A surge of light at the birth of a supernova (doi:10.1038/nature25151) describes the fortuitous capture of a supernova "Shock Breakout" - the earliest rise in brightness of a ...
1
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1answer
30 views

Focusing with Meade Audiostar

I recently upgraded from a Meade ETX-RA to and ETX-EC and bought a used Audiostar controller. My EC came with a Meade autofocuser and one of the old (I think it’s 494) controllers that has the focus ...