Object: ..... M42 - The great nebula in Orion in Hydrogen alpha light
Date: ..... 22.01.2012
Mount: ..... Losmandy G11 on Berlebach Uni-4c
Optics: ..... Celestron C11, 280mm Schmidt Cassegrain Telescope @ f2 (with Hyperstar3 lens asembly)
Filters: ..... Astronomik 12nm Ha CCD
Camera: ..... Sigma3200 with TS Filter Drawer
Chip temperature: .... -15°C regulated
Exposure: ..... Ha: 3x60s + 20x18s
Binning: 1x1
Processing: ..... Stacking (Lights, Bias, Darks, Flats), DDP, histogram modification, bloom removal, sharpening; all with Imagesplus 4.25
Guiding: ..... Autoguiding with modified 8x50 finder scope, Meade DSI Pro and GPUSB/PHD
Comments: good seeing, good transparency, no Moon
120122_m42-ha
299 KB1092736
