VMpalvelin / Astronomy / M1
M1 - Crab Nebula in H alpha, Visual, Infrared and Ultraviolet


M1 - Crab Nebula H alfa (up) and Visual (middle)
H alfa and visual images combinated: H alfa = red, green = visual (down)

Filaments of the Crab Nebula M1 are bright in H alpha light (656.28nm). Stars in the lowest photo are green because H alpha filter is very narrow.
M1 - Crab Nebula infrared (up) and ultraviolet (middle)
Infrared and ultraviolet images combinated: infrared = red, ultraviolet = blue (down)
Telescope:
ITelescopes Telescope-21
0,43m (17inch), f/6.8 with focal reducer f/4,5

(Located to USA)

Camera:
FLI PL6303E - Non Anti Blooming Gate
0.96 Arc secs/pixels

Filter:
Ha
V (photometry visual)

Exposure:
3 * 180s Ha
3 * 180s V

Date: Ha
29 Oct. 2012

Date: V
31 Oct. 2012
Telescope:
ITelescopes Telescope-17
0,43m (17inch), f/6.8

(Located to Australia)

Camera:
FLI PL4710 - Non Anti Blooming Gate
0.92 Arc secs/pixels

Filter:
I (photometry infrared)
U (photometry ultraviolet)

Exposure:
3 * 300s I
3 * 600s U

Date: I
21 Aug. 2013

Date: U
20 Aug. 2013