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Michael A. Stecker
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Askar 103 APO My Astrobin Gallery |
 IC 1805 "Heart" and IC 1848 "Soul" nebulae in Casseopeia full resolution version in Ha-Oxygen III-RGB, v2 IC 1805 "Heart Nebula" at the upper right and IC 1848 "Soul or fetus Nebula" at the lower left are complex emission nebulae in Cassiopia. This 13.9 hours photo was taken by James Foster with my Askar 103APO refractor at f/4 with a ZWO ASI6200MM-Pro monochrome camera through narrow band Hydrogen-alpha, Oxygen III and RGB filters. file: Embryo&HeartNeb-HORGB3B_26NOV24-1gsm.jpg Click here for higher resolution photo of v2 Click here for version 1 Photographic Data Date: early November, 2024 telescope: Askar 103 APO (4-inch f/4 triplet refractor with 0.6X reducer) focal ratio f/4 FL= 420 mm mount: iOptron CEM60 off-axis guiding imaging camera: ZWO ASI6200MM-Pro 3 nm filters and exposures in minutes: 245 Hydrogen-alpha , 343 Oxygen III, 80 red, 85 green, & 85 blue Total integration time: 13.9 hours photographic site: Pinon Pines Estates (Frazier Park California) (Bortle 4 at 5,500 ft elevation) |
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 IC 1805 "Heart" and IC 1848 "Soul" nebulae in RGB (no Oxygen-III) Note the lack of internal light blue color because not imaged in Oxygen-III light through the O-III filter file: Embryo&HeartNeb-RGB2Bonly-1rbh-sm.jpg Click here for higher resolution photo |
 Open cluster Tombaugh 4 in IC 1805 (Heart Nebula) from RGB photo (no Oxygen III) file: Embryo&HeartNeb-RGB2Bonly-cr1805rbh1cr1aL1.jpg |
