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Michael A. Stecker
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Astronomy Index Sky-Watcher Quattro 250P Askar 103 APO My Astrobin Gallery |
 IC 2118 "Whitch Head Nebula" and star Rigel -- widefield in Oxygen-III and RGB light James Foster's shot of Wittch Head Nebula and Rigel with my Askar 103APO (4-inch) triplet refractor reduced to f/4 and ZWO ASI6200MM-Pro Cmos mono camera through Oxygen-III, Red, Green, & Blue filters for exposure times of 49, 77, 92, & 75 minutes, respectively. The bright blue-white super giant star Rigel (Beta Orionis) is seen at the upper right corner. Click here for full resolution photo file: WitchHeadNeb-OIIIRGB4C=JRForig-a2sm.jpg Photographic Data teleascope: Askar 103APO triplet refractor with 0.6X reducer focal length: about 420 mm focal ratio: f/4 mount: iOptron CEM60 camera: ZWO ASI6200MM-pro full-frame monochrome astro-camera filters and exposures: OIII, Red, Green, & Blue filters for exposure times of 49, 77, 92, & 75 minutes, respectively. total exposure time: 293 minutes (4.88 hours)  IC 2118 "Whitch Head Nebula" and star Rigel -- widefield add on sky to Rigel in Oxygen-III and RGB light Click here for full resolution photo file: WitchHeadNeb-OIIIRGB4C-JRForig-a2addRUQ-x2GXPbed3-adsm.jpg |
 Cropped & flipped image of photo above "Witch Head Nebula": Askar 103APO at f/4 in O-III & RGB light Click here for full resolution photo file: WitchHeadNeb-OIIIRGB4C-JRForig-a1cr1x1rotGXPrbd2-acrsm.jpgg |
