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Contains:  NGC 2841
Getting plate-solving status, please wait...
NGC 2841 / Tiger's Eye Galaxy, 


            Chris Sullivan
NGC 2841 / Tiger's Eye Galaxy

NGC 2841 / Tiger's Eye Galaxy

Technical card

Resolution: 5470x3644

Dates:March 13, 2019March 17, 2019March 18, 2019March 19, 2019March 20, 2019March 24, 2019March 27, 2019March 28, 2019April 1, 2019April 2, 2019April 4, 2019April 7, 2019

Optolong Blue 1.25": 226x120" (gain: 10.00)
Optolong Green 1.25": 214x120" (gain: 10.00)
Chroma Lo-Glow LP filter: 82x120" (gain: 10.00)
Chroma Lo-Glow LP filter: 389x60" (gain: 10.00)
Optolong Red 1.25": 213x120" (gain: 10.00)

Integration: 31.0 hours

Avg. Moon age: 16.85 days

Avg. Moon phase: 51.95%

Bortle Dark-Sky Scale: 7.50 job: 2631744

RA center: 140.512 degrees

DEC center: 50.976 degrees

Pixel scale: 0.426 arcsec/pixel

Orientation: 90.220 degrees

Field radius: 0.389 degrees

Locations: Home Roof (Bortle 7-8 / Est. Sky Quality: 18.53), Springfield, PA, United States

Data source: Backyard


I'm still trying to do as many galaxies as possible during galaxy season (and to see what's possible from very bright skies). I'm finding that I'm far more productive running two telescopes at a time (who knew??). I didn't bother with collecting hydrogen data and I'm wondering whether it would have made a difference. Still, I'm glad I can publish this today - I'm dedicating this one to my daughter Matilda, who turns 7 today and who actually got me into this crazy hobby to begin with (and who likes the song "Eye of the Tiger" way more than anyone else in the family). Happy Birthday, Matilda!



Chris Sullivan
License: None (All rights reserved)


  • Final
    NGC 2841 / Tiger's Eye Galaxy, 


            Chris Sullivan
  • NGC 2841 / Tiger's Eye Galaxy, 


            Chris Sullivan


Plate-solved version. It missed a ton of galaxies (particularly in the upper right quandrant), but even some larger ones elsewhere in the image. Still interesting nonetheless.

Sky plot

Sky plot


NGC 2841 / Tiger's Eye Galaxy, 


            Chris Sullivan