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 to 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 |