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Contains:  NGC 898, NGC 891
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NGC 891 (and a Few Friends), 





    
        

            Brent Newton
NGC 891 (and a Few Friends)

NGC 891 (and a Few Friends)

Technical card

Imaging telescope or lens:Celestron Nexstar 8SE SCT

Imaging camera:Canon 450D

Mount:Celestron CG5 ASGT

Guiding telescope or lens:Celestron GuideScope 80mm f/7.5

Guiding camera:ZWO ASI120MC

Focal reducer:Celestron Reducer/Corrector f/6.3

Software:Photoshop CS6

Accessory:Canon Remote control

Resolution: 3838x2159

Dates:Jan. 26, 2017Jan. 27, 2017

Frames: 81x180" ISO1600

Integration: 4.0 hours

Darks: ~25

Flats: ~100

Flat darks: ~100

Bias: ~120

Avg. Moon age: 28.55 days

Avg. Moon phase: 1.35%

Bortle Dark-Sky Scale: 4.00

Temperature: -4.00

Astrometry.net job: 1487797

RA center: 2h 22' 38"

DEC center: +42° 13' 4"

Pixel scale: 0.888 arcsec/pixel

Orientation: -57.748 degrees

Field radius: 0.543

Locations: Kechi, Wichita, KS, United States

Description

Quite an interesting object (and image) for being so small (even at f/6~ish). I noticed something of a similarity between the edge-on dust lanes in 891 and how we see our own Milky Way during the summer months, which is apparently a common note made by many observers of the object from my online searches.

I greatly enjoyed capturing the other faint galaxies in this view as well, something which I had not expected or planned - though it does cause me to look forward to catching parts of the Virgo cluster in a few month's time.

This image was the first of two objects I imaged during the two listed nights. I targeted this galaxy from setup-midnight, then switched to M81 / M82 until morning twilight once NGC 891 got too low on the horizon. Unfortunately during the first night the camera had slid out of the scope slightly, causing a lot of out of focus exposures which had to be thrown out.

Comments

Author

brent1123
Brent Newton
License: None (All rights reserved)
2572
Like

Revisions

  • NGC 891 (and a Few Friends), 





    
        

            Brent Newton
    Original
  • Final
    NGC 891 (and a Few Friends), 





    
        

            Brent Newton
    B

B

Retried with some new NR techniques as well as special care on the star saturation. I feel like I captured the yellows on the stars a little better this time, though the edges of the galaxy seem a tiny bit too blue / green sometimes

Sky plot

Sky plot

Histogram

NGC 891 (and a Few Friends), 





    
        

            Brent Newton

In these public groups

Central USA