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Looking like it is being shredded or torn apart, by some insane cosmic winds, NGC 3981 is a spiral
galaxy located around 65 Million light years away, in the constellation of Crater. The main galaxy
has an apparent size of 3.3' X 2.1' with the faint shredded outer arms taking that out to around
9 arc min in diameter, this pushes the observed size to around 170,000 light years but given the
galaxy is clearly tilted to our line of site, were we to see it face on, it would be considerably
bigger, making it as much as 200, 000 light years across!
Orion Optics UK AG12 F3.8
Starlightxpress TRIUS PRO-814 Midi Combi PRO Blue Edition incl. CFW & OAG unit
FLI Atlas Focuser
LHaRGB = 1060, 180, 120, 135 155min total 27.5hrs
Astronomik Deep-Sky LRGB filters
-20C chip temp, flats used but no dark frames.
Focal length 1120mm
Image scale 0.68"/pix
Guide Camera: Starlightxpress Lodestar PRO
Comments
Data collected over seven nights during April and May, in mostly good seeing**
**NB: No drizzle guide, upscaling, Blur Exterminator or other AI based sharpening, was used on this
data, this is the native 0.68"/pix image scale, using just traditional Richardson Lucy deconvolution.
Seeing (FWHM) quality at Eagleview:
Excellent: <1.6"
Good: 1.6" - 1.9"
Acceptable: 2.0" - 2.3"
Poor: >2.3"
Most common FWHM value: 1.6"/1.7"
Taken from Eagleview Observatory:
https://pbase.com/strongmanmike2002/eagleview_observatory
Equipment setup:
https://pbase.com/strongmanmike2002/image/173097781/original
Some links to equipment used to take this image:
Sidereal Trading
https://www.siderealtrading.com.au/
StarlightXpress CCD Cameras and imaging equipment
http://www.sxccd.com/products
Finger Lakes Instrumentation CCD cameras:
http://www.flicamera.com/
Gerd Neumann and Astronomik filters:
http://www.astronomik.com/en/home
http://www.gerdneumann.net/
MSB Software & Astroart Camera control and Image processing software
http://www.msb-astroart.com/
Copyright Michael Sidonio 2024
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