Or is a lens mounted on the SLR and piggy backed onto the eyepiece? Anymore information about choosing the right FILM SLR would be appeciated thanks
Most often, the camera is mounted to the telescope directly, using the scope as a telephoto lens. You can also do afocal (camera lens to eyepiece) and eyepiece projection ( using the eyepiece to project a more magnified image onto the film). Any basic book on astrophotography will describe the specifics.
Desirable characteristics for the camera include mechanically operated shutter (so it doesn’t run the battery down keeping the shutter open), mirror lockup, and interchangeable focus screens. The Olympus OM1 in 35mm and the Pentax 6×7 in medium format have been very popular.
What two physical effects, are required in order to understand how we measure the speed at which galaxies are moving away from us in the Universe?
Best guess what your teacher is looking for:
Speed of Light
Doppler shift of the wavelengths of light from the galaxy (Red Shift)
I could be wrong, but that is all I need.
Also, how was the telescope transported to, and setup in orbit?
(Main question is the actual QUESTION ^^^^^^)
Thanks guys, take care.
By having the HST in orbit, the distorting effects of Earth’s atmosphere are avoided in the images.
When taking stellar images from the ground, atmospheric vibrations, dust and clouds, among other things, can have serious debilitating effects on the quality of the images. Since none of these atmospheric phenomena are present in hubble’s orbit, the images taken are of much higher quality.
The HST was placed in orbit from a Space Shuttle, like a satellite. Since then, a number of Shuttle missions were launched to repair the telescope.
I was thinking of upgrading my current telescope, i ve had a Meade etx 80 for sometime now, but i really want something a bit more advanced, and i ve heard that the cpc is great. I was wondering has any one got one and whats like to use. I thinking of getting the 800 model for cost reasons, any help would much appreciated. Also are there any other types of scopes for a similar price.
Depends on what you want. They are excellent but being SCTs they are not good for beginners as they are all f10 giving very high magnification – so it’s harder for you to star hop. Also not the best for astrophotography as they are fork mounted. Their best feature is that the tubes are small for their aperture & they have goto. If you don’t want goto or tracking get a dob instead. If you need them I would go for Celestron Advanced series – cheaper + can be used for astrophotos with no field rotation. SkyWatcher & Orion have nice stuff too.
Best place for reviews is here http://cloudynights.com/category.php?category_id=6&pr=2
In one of my stories, there is a planet covered with lakes and rivers called Hogeates. The soil, sediment, and flora of the planet give it a great yellow color when viewed from space. Besides an abundance of sulfur, what other chemical compositions would cause the rock and soil to have a yellow hue?
sulfur would give a yellow hue, but when it reacts with other elements, the compounds created could be of any color. Elemental sulfur is usually found near volcanic activity, and it usually isn’t long before it reacts with something and creates a compound which will look very different.
If you want a planet with lots of sedimentary features like earth that have a yellowish hue, you would want weathered felsic rocks (igneous rocks similar to granite) that have a bit of iron oxide in them. Sandstones (which largely form from eroded granite) with a yellowish color are mostly quartz but the yellowish hue is due to limonite which is a common iron oxide that often comes in various shades of yellow, red, or orange. , other varieties of limonite can also come in black
I have a lot of dreams about the sky. Usually either the starry night sky or the dawn sky. Those are the ones that always give me the most…. emotion….
What could be the reason for this?
Sadly, im feeling less than optimistic about my life… im actually going through a cycle of depression…
To look up at the clear blue sky in your dream, denotes hope, possibilities, creativity, peace and freedom of expression. Consider the phrase "the sky’s the limit." If the sky is cloudy and overcast, then it foretells of sadness and trouble.
To see stars in your dream, symbolize success, your aspirations and your high ideals. The stars indicate that you are putting some decision in the hands of fate and luck. Alternatively, the stars may signify your desire for fame and fortune
To see the dawn in your dream, signifies rejuvenation, enlightenment, and vitality. You may be emerging out of a new stage in life, possess a new understanding, or have a new start in life
A. In a domed structure built over a small crater.
B. In an underground lava tube or magma chamber.
C. In prefab inflatable habitats set up in a organized manner.
D. In martian monolithic domes made from martian soil.
An article on Martian lava tubes: http://www.space.com/scienceastronomy/solarsystem/mars_caves_000321.html
A monolithic dome website: http://static.monolithic.com/
a wiki article on an inflatable habitat: http://en.wikipedia.org/wiki/BA_330
Another wiki article for domed cities/craters: http://en.wikipedia.org/wiki/Domed_city
Mars is geologically dead so there aren’t any magma chambers etc. This rules out possibility B. Inflatable structures need to be built out of something flexible and soft i.e. plastic. However the lack of air pressure on the outside would most likely cause these to pop so C is a no go. This leaves A and D. I would go with D because you don’t have to bring material over to Mars and digging into a dome of soil would provide better protection from the intense cold of the Martian night.
A great song by the old Covenant, now known as the Kovenant. From the album ‘Nexus Polaris’.
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Bonjour, je m’appelle Joseph Balsamo, je suis astrologue. Plus qu’un outil l’astrologie est une passion que j’étudie et pratique depuis 1975. L’étude de votre carte du ciel me permet de vous orienter sur le chemin de votre vie pour que la réussite de vos désirs se concrétise.
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Science@ESA (Episode 4): Following The Redshift (Part 2) – Hubble’s Successor: The James Webb Space Telescope.
In this fourth episode of the Science@ESA vodcast series Rebecca Barnes will identify some of the key discoveries achieved with the famous Hubble Space Telescope, look at the concept of redshift, and meet a new telescope that will be used to uncover the early Universe.
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Named in 2002 in honour of NASA’s administrator during the Apollo programme, the James Webb Space Telescope (JWST) mission is a collaborative project between the National Aeronautics and Space Administration, the European Space Agency and the Canadian Space Agency.
JWST will address many of the outstanding issues of modern astronomy related to the ‘Early Universe’ and is expected to yield scientific breakthroughs as did its predecessor, the Hubble Space Telescope. JWST will be a general-purpose observatory with a suite of astronomical infrared-sensitive instruments.
Compared to existing or planned observatories, JWST will have the unique advantage of combining superb image quality throughout a wide wavelength range, a wide field of view and unparalleled photon sensitivity due to its 6.5-metre diameter telescope primary mirror.
http://sci.esa.int/science-e/www/area/index.cfm?fareaid=29
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The James Webb Space Telescope (JWST) is a planned infrared space observatory, the partial successor to the aging Hubble Space Telescope. The JWST will not be a complete successor, because it will not be sensitive to all of the light wavelengths that hubble can see.
The main scientific goal is to observe the most distant objects in the universe, those beyond the reach of either ground based instruments or the Hubble. The JWST project is a NASA-led international collaboration with contributors in fifteen nations, the European Space Agency (ESA) and the Canadian Space Agency (CSA).
Originally called the Next Generation Space Telescope (NGST), it was renamed in 2002 after NASA’s second administrator, James E. Webb (1906-1992). Webb had headed NASA from the beginning of the Kennedy administration through the Johnson administration (1961-68), thus overseeing all the manned launches in the Mercury through Gemini programs, until just before the first manned Apollo flight.
Current plans call for the telescope to be launched on an Ariane 5 rocket in June 2014, on a five-year mission (10 year goal). The JWST will reside in solar orbit near the Sun-Earth L2 point, which is on a line passing from the Sun to the Earth, but about 1.5 million km farther away from the Sun than is the Earth.
This position, which moves around the Sun in exact orbital synchrony with the Earth, will allow JWST to shield itself from infrared from both Sun and Earth, by using a single radiation shield positioned between the telescope and the Sun-Earth direction.
http://en.wikipedia.org/wiki/James_Webb_Space_Telescope
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Duration : 0:6:42
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