Gallery »  M27: Dumbbell Nebula with Optolong L-Extreme

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This bright close-up of the Dumbbell Nebula combines traditional RGB with highlights in H-alpha (Ha) provided by a narrowband Optolong L-Extreme filter. 30 minutes with a UV/IR cut filter and 28 minutes with the L-Extreme.

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Telescope:   Celestron EdgeHD 9.25
Length:   1635mm
Aperture:   235mm
F-stop:   f/6.225
Sessions:   1
Captured:   2022-05-22
Lights:   58
Exposure:   60
Total exposure:   58 m
Ra:   19h 59m 31.1s
Dec:   +22° 42' 53.367
Size:   27.623 x 19.033 arcmin
Radius:   0.28 deg
Scale:   0.397 arcsec/pixel