Thursday, September 5, 2013
IC 443, a supernova remnant reprocessed
There is now added some new data found from my hard drive. Image is now little wider giving a better composition. An older version can be seen here: http://astroanarchy.blogspot.fi/2013/02/ic-443-supernova-remnant-as-closeup.html Not a massive difference but image works now somehow better with some extra space at sides.
I have shot several times this supernova remnant in Gemini. In this image, there are three different exposure sets combined, first from the year 2010 and two others from this season. Total exposure time is now around 20h. Latest images for this target are shot at 11.02 this week, 3h of H-alpha emission.
A Gemini SNR, IC 443, the "Jellyfish Nebula"
Ra 06h 17m 13s Dec +22° 31′ 05′′
Image is in mapped colors, from the emission of ionized elements, R=Sulfur, G=Hydrogen and B=Oxygen.
IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a Galactic supernova remnant (SNR) in the constellation Gemini. It locates visually near the star Eta Geminorum at distance of about 5000 light years.
IC 443 may be the remains of a supernova that occurred 3,000 - 30,000 years ago. The same supernova event likely created the neutron star CXOU J061705.3+222127, the collapsed remnant of the stellar core. IC 443 is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds
Source Wikipedia, http://en.wikipedia.org/wiki/IC_443
INFO
IC 443 (also known as the Jellyfish Nebula and Sharpless 248 (Sh2-248)) is a Galactic supernova remnant (SNR) in the constellation Gemini. It locates visually near the star Eta Geminorum at distance of about 5000 light years.
IC 443 may be the remains of a supernova that occurred 3,000 - 30,000 years ago. The same supernova event likely created the neutron star CXOU J061705.3+222127, the collapsed remnant of the stellar core. IC 443 is one of the best-studied cases of supernova remnants interacting with surrounding molecular clouds
Source Wikipedia, http://en.wikipedia.org/wiki/IC_443
A natural color composition from the emission of ionized elements.
R=80%Hydrogen+20%Sulfur, G=100%Oxygen and B=85%Oxygen+15% Hydrogen to compensate otherwise missing H-beta emission. This composition is very close to a visual spectrum.
Older wide field images of the same target
Click for large images
http://astroanarchy.blogspot.fi/2011/07/ic-443-snr-scale-in-sky-zoom-in-series.html
Map of constellation Gemini
Technical details
Processing work flow:
Image acquisition, MaxiDL v5.07.
Stacked and calibrated in CCDStack2.
Levels, curves and color combine in PS CS3.
Optics, Meade LX200 GPS 12" @ f5
Camera, QHY9
Guiding, SXV-AO, an active optics unit, and Lodestar guide camera 8Hz
Image Scale, ~0,8 arc-seconds/pixel
Exposures for the H-alpha, emission of ionized Hydrogen = 20h
Narrowband cahnnels for ionized Oxygen and Sulfur are taken from an older wide field image.
A single unprocessed 1200 second frame of H-a emission
This isn't a bright object...
Tuesday, September 3, 2013
Time and Space Puzzle
I made this just for a fun...
INFO
Image in the puzzle above shows my image of the Bubble nebula in constellation Cassiopeia.
More info about this nebula in this blog post:
http://astroanarchy.blogspot.fi/2011/03/bubble-nebula-reprocessed.html
Friday, August 30, 2013
Wonders of Gemini
The collection
I made a collection out of my images from the constellation Gemini. Pictures are taken between 2007-2013 with different instruments. Closeups are taken with my longer focal length instrument, an old Meade LX200 12" telescope. Wider field images are taken by using two camera lenses, Tokina AT-X 300 f2.8 and Canon EF 200mm f1.8 lens, both full open. All images are shot with QHY9 astronomical camera and the Baader narrowband filter set, H-alpha, Oxygen and Sulfur.
Be sure to click the image to see it in full scale!
Note. a large image, ~5MB and 1900x3200 pixels
Technical data and other information
You will found all the images in this collection from my portfolio, with technical details.
Orientation
Wednesday, August 28, 2013
Wonders of Perseus
The collection
I made a collection out of my images from the constellation Cepheus. Pictures are taken between 2007-2013 with different instruments. Closeups are taken with my longer focal length instrument, an old Meade LX200 12" telescope. Wider field images are taken by using two camera lenses, Tokina AT-X 300 f2.8 and Canon EF 200mm f1.8 lens, both full open. All images are shot with QHY9 astronomical camera and the Baader narrowband filter set, H-alpha, Oxygen and Sulfur.
Be sure to click the image to see it in full scale!
Note. a large image, ~3.5MB and 1900x3100 pixels
Technical data and other information
You will found all the images in this collection from my portfolio, with technical details.
Orientation
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