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Catalogue and alternative designations IC 5148/50, Spare tyre nebula


Type Planetary Nebula 
Position 21 59.5, -39 23
Constellation Grus
Camera and Telescope GMOS (Gemini Multi Object Spectrograph) instrument on 8 metre Gemini South. Click here for more information about this instrument
Focal Ratio F16
Exposure Details One hour total exposure with red assigned to 780nm, green to 630nm and blue to 475nm. Ha and OIII filters were also used. 
Description This seldom imaged planetary nebula is about 2' across and magnitude 11.5.  It was discovered by Gale in 1894 and independently by Swift three years later.  Dreyer recorded both observations, hence the dual designation.  The estimated distance is about 2900 light years.