Wednesday, September 15, 2010
NGC 55, irregular galaxy in constellation Sulptor
Note. Color balance edited 16.09.
NGC 55, barred irregular galaxy in constellation Sculptor. Distance about 7 million light years.
When I was stacking the Luminance channel of NGC55, I noticed two moving objects in a field.
I made animations of them to show the movement. It could be nice to know, what they are. When I'll find out,
I'll post the information here!
I'll post the information here!
UPDATE
A friend in Finnish astronomical group, "Astronetti", found the information for objects by using the "Minor Planet Checker" Here is the information for both objects:
Object designation R.A. Decl. V Offsets Motion/hr Orbit Further observations?
(20031) 1992 OO 00 14 06.8 -39 17 11 15.7 9.0W 5.4S 20- 35- 12o None needed at this time.
(20031) 1992 OO 00 14 06.8 -39 17 11 15.7 9.0W 5.4S 20- 35- 12o None needed at this time.
2005 UD530 00 13 51.8 -39 13 53 19.7 11.9W 2.1S 33- 0+ 3o Desirable between 2010 Sept.
15-Oct. 15.
Animated areas are marked in this single 600s luminance frame.
Information:
Location, Brisbane Australia
Date, 14.09.2010
Time Zone, UTC +10h
The animation has13 x 600s frames, taken between 10:25 and 13:31 UTC.
The whole field animated showing both moving objects. First object at Two a clock position and the second one at Eight a clock position.
Closeup animation of first object.
An animated closeup of the second object.
It's always fascinating to see something moving in a deep space! An other part of fun is trying to find out, what it might be.
Technical details:
16" RCOS ja Apogee U9000 camera.
LRGB combo. An Australian remote telescope
13x600s for the Luminance and 3x600s / RGB-channel . Dark, Bias and Flat calibrated.
Raw data is shared by Petri Kehusmaa and J-P Metsavainio
Processing workflow:
Image acquisition, MaxiDL v4.xxx
Stacked and calibrated in CCDStack.
Deconvolution with a CCDSharp, 30 iterations.
Levels, curves and color combine in PS CS3.
A general note:
Seeing was really bad during the imaging sequence, FWHM varied between 8" -5,5"
A general note:
Seeing was really bad during the imaging sequence, FWHM varied between 8" -5,5"
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