Herschel's Garnet Star (Mu Cephei) and dark nebulae in narrowband

Posted by Ginge70
on Wednesday, October 26, 2011

 

 

Two-panel mosaic

Palette: R=Ha, G=(60%ha+20%SII+20%OIII), B=OIII

Optics: Vixen R200SS 8" f/4 MPCC

Camera: QSI 583wsg

Guideing: DSI II via OAG

Mount: EM-200 Temma 2m

Exposures: Ha: 32h, OIII:12,5h, SII:28h, 30 minute subs +Darks, Flats

Filters: Astrodon 5nm Ha, OIII, SIIShot from Holmlia/Oslo, spring/fall 2011

 

 

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