Astronomy photos
- Thread starter #juan
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Yes, weather permitting of course :smile:
That's a real sweet set-up you and your boy use. I'd like to get into that someday, when I have some money to purchase the equipment of course.
Just for your information Stretch, with the biggest and best telescope in existance, including Hubble, the smallest detail you can see on the moon is several kilometers across. That kind of lets out those flags on the moon......too bad....;-)
It is expensive Tonington. My son probably has 12 or 15 thousand dollars invested in telescopes and other astronomy "tools". His reasoning is that i t is probably no more expensive than golf if you look at all the costs for both over ten years.
Here is a link to his dome building: http://www3.telus.net/~ekfuller/files/dome_0c.pdf
Thanks for that link juan! I don't play enough golf, and I don't expect I'll have the time to put in the number of rounds to rationalize a membership. It would be nice to have stuff like this to show my future kids what the universe looks like. And then their theoretical physicist uncle can explain it to them once they learn more than me!
With membership fees of near sixty grand at highbrow clubs near Toronto ... astronomy is a bargain (and a LOT easier on the temper)
Maybe not. Right now you can buy a Meade 3" refractor with a mount and with motorised tracking on two axis for under $400.00. The first picture on this topic was taken through that telescope.
It gets better. He is now installing controls and motors so he can do everything from a PC and monitor in his den without even going outside.....I can't do anything like that because my house is surrounded by trees.....On clear nights I take my telescope down to the beach.
This is another shot of the Orion Nebula with nearby Running Man Nebula on the left. These took about 14 one minute exposures that were stacked. There is a lot of colour that we didn't plan on that comes from using a small 3 inch achromatic refractor but still, a few years ago the big telescopes weren't doing much better
It's that and a combination of a few things, but mostly it is from looking through cloud.
This is Andromeda Galaxy our nearest neighbor galaxy. 2.5 million light years away,
View attachment 999
View attachment 999
List of orders of magnitude for lengthFactor (ly)ValueItem10-940.4×10-9 lyReflected sunlight from the Moon's surface takes 1.2-1.3 seconds to travel the distance to the Earth's surface. (The surface of the moon is roughly 376300 kilometers from the surface of the Earth, on average. 376300 km ÷ 300000 km/s (roughly the speed of light) ≈ 1.25 seconds)10-615.8×10-6 lyOne astronomical unit (the distance from the Sun to the Earth). It takes approximately 499 seconds (8.32 minutes) for light to travel this distance.[14]10-33.2×10-3 lyThe most distant space probe, Voyager 1, was about 14 light-hours away from Earth as of 9 March 2007 (2007 -03-09)[update]. It took that space probe 30 years to cover that distance.[15]1001.6×100 lyThe Oort cloud is approximately two light-years in diameter. Its inner boundary is speculated to be at 50,000 AU, with its outer edge at 100,000 AU2.0×100 lyMaximum extent of the Sun's gravitational pull (hill sphere/roche sphere, 125,000 AU). Beyond this is true interstellar space4.22×100 lyThe nearest known star (other than the Sun), Proxima Centauri, is about 4.22 light-years away.[16][17]10326×103 lyThe center of our galaxy, the Milky Way, is about 8 kiloparsecs away.[18][19]100×103 lyThe Milky Way is about 100,000 light-years across.1062.5×106 lyThe Andromeda Galaxy is approximately 2.5 megalight-years away.3.14×106 lyThe Triangulum Galaxy (M33), at 3.14 megalight-years away, is the most distant object visible to the naked eye.59×106 lyThe nearest large galaxy cluster, the Virgo Cluster, is about 59 megalight-years away.150×106 - 250×106 lyThe Great Attractor lies at a distance of somewhere between 150 and 250 megalight-years (the latter being the most recent estimate).1091.2×109 lyThe Sloan Great Wall (not to be confused with the Great Wall) has been measured to be approximately one gigalight-year distant.46.5×109 lyThe comoving distance from the Earth to the edge of the visible universe is about 46.5 gigalight-years in any direction; this is the comoving radius of the observable universe. This is larger than the age of the universe dictated by the cosmic background radiation; see size of the universe: misconceptions for why this is possible.
FYI, the defrence between 1 earth year to 1 light year.
The exact length of a light year depends on the exact length used for one “Earth year”. The IAU uses a Julian year of 365.25 days, while Gregorian year takes 365.2425 days, or another year altogether.
Source year (days) light year (metres) light year (miles)
IAU: Julian year 365.25 9,460,730,472,580,800 5,878,625,373,184
Gregorian year 365.2425 9,460,536,207,068,020 5,878,504,662,190
1900 mean tropical year 365.242199 9.460 528 4 ×1015 5.878 499 81 ×1012.
[COLOR=blue !important][COLOR=blue !important]Internet [COLOR=blue !important]search [/color][COLOR=blue !important]engines[/color][/color][/color] use various definitions. Google uses a light-year based on the 1900 mean tropical year. Yahoo's light-year definition works out to a year length of ~365.2411 days.
Distances measured in fractions of a light-year usually involve objects within a star system. Distances measured in light-years include distances between nearby stars, such as those in the same spiral arm or globular [COLOR=blue !important][COLOR=blue !important]cluster[/color][/color].
One kilolight-year, abbreviated "kly", is one thousand light-years, or about 307 parsecs. Kilolight-years are typically used to measure distances between parts of a galaxy.
One megalight-year, abbreviated "Mly", is one million light-years, or about 306,600 parsecs. Megalight-years are typically used to measure distances between neighboring galaxies and galaxy clusters.
One gigalight-year, abbreviation "Gly", is one billion light-years — one of the largest distance measures used. One gigalight-year is about 306.6 million parsecs, or roughly one-thirteenth the distance to the horizon of the observable universe (dictated by the cosmic background radiation). Gigalight-years are typically used to measure distances to supergalactic structures, such as clusters of quasars or the Great Wall.
The exact length of a light year depends on the exact length used for one “Earth year”. The IAU uses a Julian year of 365.25 days, while Gregorian year takes 365.2425 days, or another year altogether.
Source year (days) light year (metres) light year (miles)
IAU: Julian year 365.25 9,460,730,472,580,800 5,878,625,373,184
Gregorian year 365.2425 9,460,536,207,068,020 5,878,504,662,190
1900 mean tropical year 365.242199 9.460 528 4 ×1015 5.878 499 81 ×1012.
[COLOR=blue !important][COLOR=blue !important]Internet [COLOR=blue !important]search [/color][COLOR=blue !important]engines[/color][/color][/color] use various definitions. Google uses a light-year based on the 1900 mean tropical year. Yahoo's light-year definition works out to a year length of ~365.2411 days.
Distances measured in fractions of a light-year usually involve objects within a star system. Distances measured in light-years include distances between nearby stars, such as those in the same spiral arm or globular [COLOR=blue !important][COLOR=blue !important]cluster[/color][/color].
One kilolight-year, abbreviated "kly", is one thousand light-years, or about 307 parsecs. Kilolight-years are typically used to measure distances between parts of a galaxy.
One megalight-year, abbreviated "Mly", is one million light-years, or about 306,600 parsecs. Megalight-years are typically used to measure distances between neighboring galaxies and galaxy clusters.
One gigalight-year, abbreviation "Gly", is one billion light-years — one of the largest distance measures used. One gigalight-year is about 306.6 million parsecs, or roughly one-thirteenth the distance to the horizon of the observable universe (dictated by the cosmic background radiation). Gigalight-years are typically used to measure distances to supergalactic structures, such as clusters of quasars or the Great Wall.
A rather impressive picture of the two nebulas.
http://www.dl-digital.com/images/Astronomy/Messier-Images/M42-Rework-1500.jpg
http://www.dl-digital.com/images/Astronomy/Messier-Images/M42-Rework-1500.jpg
somebody trying to hide something?
YouTube - Missing Star Panel in Orion
YouTube - Were Microsoft, Google & WikiSky Forced to Hide Planet X ???
YouTube - Missing Star Panel in Orion
YouTube - Were Microsoft, Google & WikiSky Forced to Hide Planet X ???
