Specs: 45cm f/12.6 (F= 5760mm), f/4.2 primary , 3x multiplier for secondary. Optics and critical mechanicals by Optical Mechanics of Iowa City, Iowa.
350mm back focus
secondary mirror focuser via RoboFocus
Tricolor Narrowband Crab Nebula image: [SII] = Red, Halpha = Green, [OIII] = Blue
Crab Nebula in RGB
18 x 10 minutes
M100 Luminance
1x 90seconds unguided (IMG6303E, Halpha), (first light Feb 4, 2006)
3 x 10 minutes IMG6303E, Halpha: guided via dichroic beam splitter/AO7/ST7E
4
x 20 minutes IMG6303E, Halpha: guided via dichroic beam splitter/AO7/ST7E (Feb
5, 2006)
4
x 30 minutes IMG6303E, Halpha: guided via dichroic beam splitter/AO7/ST7E (Feb
7, 2006)
4 x 30 minutes Halpha + 3 x 45 minutes [OIII] IMG6303E
camera guided via Lumicon Giant Easy Guider (w/o reducer) and ST7E
Collimation tests inside and outside of focus stars. Note chipped primary in these images and in the photographs below
