Listing Results Ra Dec Az Alt Signonsandiego Forums
About 19 results and 8 answers.
Help with RA-DEC to ALT-AZ conversion - Cosmoquest Forum
6 hours ago Hi, I'm a student from India. In my college, we have a 12" Newtonian telescope. We're in the process of motorising/computerising it. We have procured a stepper motor controller and I'm currently writing software for it in visual basic. I've written the code for the RA/DEC to ALT/AZ conversion, sadly it only works some of the time. Which likely means that there's something …
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Alt/AZ - RA/DEC question - Beginners Forum (No
10 hours ago Feb 16, 2005 . Alt/AZ - RA/DEC question - posted in Beginners Forum (No astrophotography): why is it when you look up coord using Alt/Az the alt …
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RA and DEC to ALT and AZ - Stargazing
6 hours ago RA = 16.695 * 15 = 250.425 degrees. In order to calculate the ALT and AZ of the comet for a given time and place, we need to calculate the Local Siderial Time (LST), and then work out the Hour Angle (HA) of the object. Then we can use some standard formulas from spherical trigonometry to transform the HA and DEC to the ALT and AZ.
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RA, DEC vs Azimuth, Altitude difference. - Stargazers
3 hours ago Mar 06, 2018 . Where alt-az is dependent on where you stand, Dec/RA doesn't change with your position. If you consider the lines of latitude and longitude as an earth coordinate system, the celestial coordinates are just the lines of latitude and longitude extended into space. Latitude is the same as Declination, Longitude is the same as Right Ascension.
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Convert RA/DEC to Alt/Az - astrogreg.com
9 hours ago Convert RA/DEC to Alt/Az. Converts a RA/DEC (J2000) coordinate to approximate Alt/Az (J2000) coordinate. This uses Greenwich Mean Sidereal Time to compute the approximate horizon coordiates, if you need the coordiates also corrected for nutation, you will need to modify this to use Greenwhich Apparent Sidereal Time. It is assumed that all corrections the user has …
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Fisheye Lens to Flat ? Physics Forums
10 hours ago Apr 10, 2010 . Forums. Astronomy and Cosmology. Astronomy and Astrophysics. Fisheye Lens (alt/az) to Flat (RA/Dec)? Thread starter solarblast; Start date Apr 10, 2010; Apr 10, 2010 #1 solarblast. 152 2. I have a fisheye lens which sees 180 degrees of the sky. It registers the entire sky on a 640x480 grid of pixels. Let's assume I know where the zenith and ...
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Simple calculator tool for going from RA/Dec in J2000 to
5 hours ago Feb 05, 2015 . Forums. Far Side of the Moon. Math & Physics . Simple calculator tool for going from RA/Dec in J2000 to Alt/Az ... . Simple calculator tool for going from RA/Dec in J2000 to Alt/Az. Thread starter Messierhunter; Start date Feb 2, 2015; Messierhunter New member. Joined Apr 30, 2008 Messages 488 Reaction score 2 ...
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how to Convert RA-DEC to Alt-AZ Naked Science Forum
11 hours ago Apr 03, 2011 . Hi, Converting RA-DEC to ALT-AZ: Last time i put the question was not clear. I make it more clear now. My observing site Latitude (Singapore) = 1.19,48 deg , and Long 103,49,48 My location time 450 minute ahead of UT time. My object is M31 and observing date is 29-11-2004 and My observing time is 23:23:33 Find out: On Above Date and time, Altitude …
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Software to convert RA and DEC into ALT and AZ
1 hours ago Nov 28, 2015 . Software to convert RA and DEC into ALT and AZ. Ask Question Asked 6 years, 3 months ago. Active 6 years, 3 months ago. Viewed 2k times 5 1 $\begingroup$ I have implemented the ...
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RA/Dec to alt/az & catalogs Astromart
4 hours ago Nov 09, 2006 . regarding cnverting the RA/DEC coordinates to ALT/AZ-- Instead of converting, why not just use a planetarium program like the Sky or Cartes Du Ciel to tell you where an object is. I mean, if you are carting around a computer to help you with conversions, you might as well have a planetarium program in it.
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RA Dec to Alt Az converter · GitHub
9 hours ago RA Dec to Alt Az converter Raw gistfile1.cs This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more …
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RA/DE to ALT/AZ conversion code - aavso
6 hours ago Nov 11, 2018 . As an example, my location is ~49 degrees lattitude. With a SCT scope (& CCD) my typical range of DEC ran from ~ -15 degrees at lowest horizion to a maximum of ~ 74 degrees. Most of the time I probably worked from about + 20 degrees DEC to 70 degrees DEC. With a Newtonian, I presume I probably could have worked a much higher DEC.
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astronomy - RA/dec to Alt/Az program or method - Physics
12 hours ago HA = LST - RA (see here for a description on how to do it) If you need a program to do it, then you should look up The IDL Astronomy User's Library specifically the HADEC2ALTAZ (Convert Hour Angle and Declination to Horizon (alt-az) coordinates) subroutine. Have included the code below. I haven't personally used this and thus cannot verify the ...
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Celestial to Horizon Co-ordinates Calculator - Converts
6 hours ago The azimuth (AZ) and altitude (ALT) of an object in the sky can be calculated easily using the date, universal time (UT), and the latitude (LAT) and longitude (LON) of the observing site and the right ascension (RA) and declination (DEC) of the object. All coordinates are expressed in degrees in the range 0° to 360°, so that trigonometric ...
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Stellarium / Discussion / Feedback: RA/DEC to Az/Alt
8 hours ago Stellarium A planetarium software that shows a 3D simulation of the night sky Brought to you by: alexvwolf, charlie137,
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RA DEC to ALT AZ - TheSkySearchers.com
4 hours ago Does anyone know an easy way to find ALT AZ from RA DEC. Is there an easy way? Thanks. TheSkySearchers.com. Come join the newest, most engaging and inclusive astronomy forum geared for beginners and advanced telescope users, astrophotography devotees, plus check out our "Astro" goods vendors.
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pyephem problem with alt/az to ra/dec and back - Johnnn
12 hours ago i generate random positions above the horizon(az=0-360,alt=0-90)in az/alt and calculate them with radec_to() to RA and DEC. to check the result i retransform them. so what i don't understand is, why i get around...
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RA/Dec - AZ/Alt App for iPhone - Free Download RA/Dec - AZ
5 hours ago Download RA/Dec - AZ/Alt App 1.1.0 for iPhone & iPad free online at AppPure. Get RA/Dec - AZ/Alt for iOS latest version. It's 2 apps in 1. 1.
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Help with RA-DEC to ALT-AZ conversion - forum.cosmoquest.org
1 hours ago I'm a student from India. In my college, we have a 12" Newtonian telescope. We're in the process of motorising/computerising it. We have procured a stepper motor controller and I'm currently writing software for it in visual basic. I've written the code for the RA/DEC to ALT/AZ conversion, sadly it only works some of the time.
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Frequently Asked Questions
How to see the difference between Ra/DEC and alt/az grids?
If you want to see the difference in the RA/Dec and Alt/Az grids made in the sky at your location - download Stellarium and set your location. You can then switch the two different grids on and off using the tool menu bottom left of the screen. Great software, thanks!
Does Ra/Dec change with time and location?
RA/Dec are fixed to all intents and purposes and unaffected by time and location. If you can get to the point where the RA / Dec coordinates say they are then it will be there no matter when or where you are. To find an alt az target using coordinates you need to consider when and where you are as the coordinates change constantly.
What is the difference between celestial coordinates and Dec/Ra?
Where alt-az is dependent on where you stand, Dec/RA doesn't change with your position. If you consider the lines of latitude and longitude as an earth coordinate system, the celestial coordinates are just the lines of latitude and longitude extended into space.
How do you calculate the RA and Dec of M13?
The RA and DEC of M13 are given as; It is a good idea to keep all the decimal places in the figures until the calculation is complete, then round off later on. Notice how Longitudes west are counted as negative, and East counted as positive. We will also need the RA in degrees, not hours. Just multiply the hours figure by 15;
How do you calculate the Alt and AZ of a comet?
In order to calculate the ALT and AZ of the comet for a given time and place, we need to calculate the Local Siderial Time (LST), and then work out the Hour Angle (HA) of the object. Then we can use some standard formulas from spherical trigonometry to transform the HA and DEC to the ALT and AZ.
How do you calculate the RA and Dec of M13?
The RA and DEC of M13 are given as; It is a good idea to keep all the decimal places in the figures until the calculation is complete, then round off later on. Notice how Longitudes west are counted as negative, and East counted as positive. We will also need the RA in degrees, not hours. Just multiply the hours figure by 15;
How do you calculate Ra from LST and ha?
We calculate the HA in degrees, so that we can take sines and cosines later. HA = LST - RA If HA negative, then add 360 to bring in range 0 to 360 RA must be in degrees. As you can see, the HA of the first point of Aries (where RA is 0) is just the LST expressed in degrees.
How to write the formula for AZ above all along one line?
You can write the formula for AZ above all along one line by using brackets to ensure that the 'top' and 'bottom' of the formula get worked out before the division. Having formulas on one line is needed for spreadsheets or BASIC programs.