Steven Mohr
NGC613 | Barred Spiral Galaxy | LHaRGB
NGC 613 is a barred spiral galaxy located 67 million light years away in the southern constellation of Sculptor. This galaxy was discovered in 1798 by German-English astronomer William Herschel, then re-discovered and catalogued by Scottish astronomer James Dunlop. [From the Wikipedia]
After stacking the luminance data, I was surprised to see how relatively bright this galaxy is considering its visible size of only 5.5 arcminutes, so bright I had to heavily reduce its surface brightness to reveal the inner and outer core detail. The colour of the galaxy is bright and easily defined in the raw data. The pink sections representing active star forming regions, was collected using the Hydrogen Alpha filter during Moon up times.
Many of the dots that can be seen are in fact distant background galaxies! Sculptor is really an amazing constellation for viewing galaxies.
This image has been cropped, representing approximately 60% of the original field of view.
Thank you for looking.
Full Resolution:
c1.staticflickr.com/5/4850/45467072535_01ddd53e76_o.jpg
Information about the image:
Instrument: Planewave CDK 12.5 | Focal Ratio: F8
Camera: STXL-11000 + AOX | Mount: AP900GTO
Camera Sensitivity: Lum: BIN 1x1, Ha: BIN 1x1, RGB: BIN 2x2
Exposure Details: Total: 14.25 hours | Lum: 23 x 900 sec [5.75hr], Ha: 12x 1200 sec [4.0hr],RGB 450sec x 12 each [4.5hrs]
Viewing Location: Central Victoria, Australia.
Observatory: ScopeDome 3m
Date: November to December 2018
Software Enhancements: CCDStack2, CCDBand-Aid, PS, Pixinsight
Comment: Good seeing
Author: Steven Mohr
NGC613 | Barred Spiral Galaxy | LHaRGB
NGC 613 is a barred spiral galaxy located 67 million light years away in the southern constellation of Sculptor. This galaxy was discovered in 1798 by German-English astronomer William Herschel, then re-discovered and catalogued by Scottish astronomer James Dunlop. [From the Wikipedia]
After stacking the luminance data, I was surprised to see how relatively bright this galaxy is considering its visible size of only 5.5 arcminutes, so bright I had to heavily reduce its surface brightness to reveal the inner and outer core detail. The colour of the galaxy is bright and easily defined in the raw data. The pink sections representing active star forming regions, was collected using the Hydrogen Alpha filter during Moon up times.
Many of the dots that can be seen are in fact distant background galaxies! Sculptor is really an amazing constellation for viewing galaxies.
This image has been cropped, representing approximately 60% of the original field of view.
Thank you for looking.
Full Resolution:
c1.staticflickr.com/5/4850/45467072535_01ddd53e76_o.jpg
Information about the image:
Instrument: Planewave CDK 12.5 | Focal Ratio: F8
Camera: STXL-11000 + AOX | Mount: AP900GTO
Camera Sensitivity: Lum: BIN 1x1, Ha: BIN 1x1, RGB: BIN 2x2
Exposure Details: Total: 14.25 hours | Lum: 23 x 900 sec [5.75hr], Ha: 12x 1200 sec [4.0hr],RGB 450sec x 12 each [4.5hrs]
Viewing Location: Central Victoria, Australia.
Observatory: ScopeDome 3m
Date: November to December 2018
Software Enhancements: CCDStack2, CCDBand-Aid, PS, Pixinsight
Comment: Good seeing
Author: Steven Mohr