Crab Nebula Narrowband

Crab Nebula Narrowband

Constellation: Taurus
Ra: 5h 35m 14s
Dec: +22d 1m 18s
Distance: 6,500 light years
Image Size: 36' x 36'
North: Up



I was particularly interested in the OIII-rich projection coming from the upper side of the nebula. Below is an image taken with a slightly larger telescope, the 8.2 m Subaru telescope, showing this same feature. Thanks to Greg Morgan for pointing out this reference. Image credit – Toru Yamada/NAOJ

Astrodon 3 nm H-a, OIII and SII mapped to green, blue and red, respectively (Hubble palette).
CCD AutoPilot4 for data acquistion using MaximDL
Processed in CCDStack and Photoshop CS3
Image cropped to ~ 15 arcmin square (from 35 arcmin)

Exposure: 9.5 hrs Total: 3.5 hrs H-a, OIII, 2.5 hrs SII
Telescope: RCOS 16
Mount: Software Bisque Paramount ME
Oag: Astrodon MonsterMOAG
Acquisition: CCD AutoPilot4
Calibration: CCDStack
Observatory Site: Sierra-Remote Observatories, Shaver Lake, CA
Camera: Apogee U16M
Filters: Astrodon 3nm OIII, SII, H-a
Guider: SBIG ST-402
Camera Operation: MaximDL4.62
Processing: Photoshop CS3
Image Date: 10/22/2008

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