Harmonic Drive I’ve received a brand-new ‘Harmonic Drive’ equatorial mount CRUX-170HD about a month ago. CRUX-170HD uses a special driving mechanism different from other equatorial mounts. Baisically, almost all commercially-available equatorial mounts are worm-driven. They uses worm and worm gear system for final reduction. But there are few drawbacks here. Worm & worm gear system […]
Bode & Cigar: M81, M82 Bode’s galaxy: M81 (left) and Cigar galaxy: M82 (right) 2017-04-29, Hongcheon, Korea CCD: SBIG STF-8300M (-20°C) Telescope: Takahashi FS-60CB w/ Flattener (d=60mm, fl=374mm) Filter: Baader L, R, G, B Mount: iOptron CEM25P, QHY5L-II, PHD2 autoguided Exposure L: 300s * 11 R: 300s * 5 G: 300s * 5 B: 300s […]
Trifid & Lagoon: M8, M20 Trifid Nebula: M20 (left) and Lagoon Nebula: M8 (right). M21 also can be seen. 2017-04-23, Hongcheon, Korea CCD: SBIG STF-8300M (-20°C) Telescope: Takahashi FS-60CB w/ Flattener (d=60mm, fl=374mm) Filter: Baader Ha, L, R, G, B Mount: iOptron CEM25P, QHY5L-II, PHD2 autoguided Exposure Ha: 300s * 2 L: 300s * 6 […]
Rho Oph molecular cloud complex 6th try of Rho Oph molecular cloud complex. Antares and M4 can be seen easily. 2017-05-02, Baekmagoji, Cheolwon, Korea CCD: Camera: CDS-600D (-8°C) Lens: Samyang 135mm f/2.0 (55mm front masked) Filter: N/A Mount: Kenko SkyMemo S Exposure RGB: 180s * 20 (Total integration 3600s / 60min) Processing: MaxIm DL 6, […]
Veil Nebula Veil Nebula in Cygnus. 2017-05-02, Baekmagoji, Cheolwon, Korea CCD: SBIG STF-8300M (-20°C) Telescope: Takahashi FS-60CB w/ Flattener (d=60mm, fl=374mm) Filter: Baader Ha, R, G, B Mount: iOptron CEM25P, QHY5L-II, PHD2 autoguided Exposure Ha: 300s * 10 R: 180s * 3 G: 180s * 3 B: 180s * 3 (Total integration 4620s / 77min) […]
Sadr Region nebula: IC 1318 HOO combined image of Sadr Region. 2017-05-24, Yangpyeong, Korea CCD: SBIG STF-8300M (-20°C) Telescope: Takahashi FS-60CB w/ Flattener (d=60mm, fl=374mm) Filter: Baader Ha, OIII Mount: iOptron CEM25P, QHY5L-II, PHD2 autoguided Exposure Ha: 900s * 4 OIII: 900s * 2 (Total integration 5400s / 90min) Processing: MaxIm DL 6, PixInsight, Adobe […]
