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Contains:  NGC 5906, NGC 5907
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NGC5907 The Needle Galaxy, 



    
        

            niteman1946
NGC5907 The Needle Galaxy
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NGC5907 The Needle Galaxy

Technical card


Dates:June 14, 2017Oct. 17, 2018Oct. 21, 2018Oct. 25, 2018March 17, 2019March 22, 2019April 14, 2019June 25, 2019

Frames:
Astronomik B 1.25" Type IIc: 20x300" -10C bin 1x1
Astronomik G 1.25" Type IIc: 20x300" -10C bin 1x1
Astronomik L 1.25" Type IIc: 40x600" -10C bin 1x1
Astronomik R 1.25" Type IIc: 20x300" -10C bin 1x1

Integration: 11.7 hours

Darks: ~30

Flats: ~30

Bias: ~100

Avg. Moon age: 14.13 days

Avg. Moon phase: 77.76%


Basic astrometry details

Astrometry.net job: 2764682

RA center: 15h 15' 54"

DEC center: +56° 19' 19"

Pixel scale: 0.509 arcsec/pixel

Orientation: 179.123 degrees

Field radius: 0.289 degrees


Resolution: 3290x2437

Locations: Lighthouse Observatory, Burleson, Texas, United States

Data source: Backyard

Description

NGC 5907 (also known as Knife Edge Galaxy or Splinter Galaxy) is a spiral galaxy located approximately 50 million light years from Earth. It has an anomalously low metallicity and few detectable giant stars, being apparently composed almost entirely of dwarf stars. It is a member of the NGC 5866 Group.

NGC 5907 has long been considered a prototypical example of a warped spiral in relative isolation. In 2006, an international team of astronomers announced the presence of an extended tidal stream surrounding the galaxy that challenges this picture and suggests the gravitational perturbations induced by the stream progenitor may be the cause for the warp.

The galaxy was discovered in 1788 by William Herschel. Supernova 1940A was in this galaxy. [Source: Wikipedia]

CAPTURE Information:
The image was captured with the iOptron CEM120 mount , the venerable Meade 12"LX200 SCT, and my Atik 383L+ m CCD at F7.16 (2182mm FL). Image subs were taken through Astronomik's broadband filters Lum (L), along with R, G and B. Subs were done at 1x1 bin, -10C, at 10 minutes for Luminance; and 5 minutes for R, G and B.

IMAGE information -- 2019:
Lum: 40 subs (6.67hr) on Jun 14th, 17th, 22nd and 25th.
Red: 20 subs (1.67hr) on Jun 21st and 25th.
Green: 20 subs (1.67hr) on Jun 14th, 17th, and 25th.
Blue: 20 subs (1.67hr) on Jun 17th, 21st, and 25th.

Processing was done with PixInsight, following (for the most part) kayronjm's tutorial of Feb. 24th, 2013. I used the recently created Luminance Twilight Flats which have mostly corrected background problems. North is up and this is a slight crop due to the misalignment accumulation from the different filters and times.

COMMENTS:
The background is somewhat mottled. This is a result of trying to squeeze every bit of signal out of the image.

Comments

Author

niteman1946
niteman1946
License: None (All rights reserved)
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NGC5907 The Needle Galaxy, 



    
        

            niteman1946