Archive for Milky Way

Milky Way Time Lapse with Canon EOS 450d

Posted in Astrophotography with tags , , , on 2012/06/18 by computerphysicslab

Milky Way rises by the East. Sagittarius on the left and Scorpius on the right.


Bright nebulae at Milky Way core

Posted in Astrophotography with tags , , , , , , , , , , , , on 2011/07/04 by computerphysicslab

Summer views of Milky Way are spectacular because the galaxy bulge is brighter and broader than its spiral arms visible the rest of the year. Located near Sagittarius and Scorpius constellations, the bright nebulae and dark lanes of the area creates a beautiful contrast in brightness and colors.

This picture is a 4-pane mosaic ensambled with free software Fitswork 4.40. Every pane is a 10 minutes exposition through a 55mm lens attached to a Canon EOS 450d (Rebel XSi) DSLR camera, mounted over a motorized equatorial mount, Sky Watcher EQ6.

Mosaic - Sagittarius Scorpius - Milky Way core

A full resolution picture is available at AweSky

North America Nebula

Posted in Astrophotography with tags , , , , , , , , , , on 2010/11/04 by computerphysicslab

This picture of North America Nebula (NGC 7000, a bright nebular region located in the Milky Way area of Cynus) was taken yesterday, 2010-11-03 under good transparency skies, using a 55mm lens and Canon EOS 450d, Rebel XSi and an EQ6 mount doing the unguided tracking. This is just one shot of 1380 seconds of exposition (23 minutes).

Postprocessing done using PSP9 and Fitswork4.

NGC 7000 is an emission nebula in the constellation Cygnus, near Deneb (α Cygni), also called the North American Nebula. The dark central region called the Gulf of Mexico, as in some astronomical plates for many years resembled that region of America.

Nebula NGC 7000 is the largest covering an area equivalent to the full moon, but its low surface brightness does not normally visible to the naked eye (though, in a dark, using a UHC filter can be seen without optical aid) NGC 7000 and the nearby Pelican Nebula (IC 5070) are part of the same interstellar cloud of ionized hydrogen (HII region). The dark area in the center is a very dense region of interstellar material in front of the nebula and which absorbs light of it, giving the group its characteristic shape.

It is not known with precision the distance that separates us from NGC 7000, neither the star responsible for the ionization of hydrogen that results in the emission of light. Supposing Deneb is the star that illuminates the nebula NGC 7000 then the distance to Earth is on the order of 1800 light years.

From a light polluted city

Posted in Astrophotography with tags , , , , , , , , on 2009/07/19 by computerphysicslab

This image was taken in the center of a light polluted city with almost 1 million inhabitants. Using a dark frame of the polluted sky I could catch the Milky Way. Obviously it was impossible to observe it with naked eye.

The image is the result of adding 20 subframes of 15 seconds of exposure each one at ISO 1600. After applying a barrel distortion filter to compensate lens distortion the images become integrable. Using Nebulosity 2 software I could compensate the sideral motion of the sky.

The quality of the image is very low. The point here is not quality but the successful of avoiding light pollution in a widefield Milky Way shot. The area corresponds to the border of Lyra constellation towards Aquila constellation.