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Michael A. Stecker
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Askar 103 APO
C-11 images
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 Widefield full-frame view of Antares-Rho Ophiuchus Complex At the lower left is a large orange-yellow dust cloud surrounding the star Antares in Scorpius with globular cluster M4 above and red emission nebula Cederblat 130 to the upper right of M4. Near the center is the light blue nebula IC 4603 with dark nebulae B44 and B45 below. Triplet star Rho Ophiuchus with surrounding blue reflection nebula is on the right. North is up. file: RhoOph1_316min_GraXpert2ndAttempt3final2-ahr3rxsm.jpg Click here for full resolution image telescope: Askar 103 APO 4-inch triplet refractor with 0.6X focal reducer Aperture: 103 mm at f/6.8 Focal length (reduced): 412 mm Focal ratio with 0.6X reducer: f/4 imaging camera: ZWO ASI6200MC-Pro color astro-camera exposure: 316- minutes (5.26 hours) |
