ipernity: Astronomie by Ko Hummel

M42, Orion nebula (view on black)

25 Feb 2016

13

11

456

50 exposures 10 sec each, telescope prime focus f=750 mm, ISO 800 Final(?) processing in photoshop

Moon meets Jupiter (view on black)

23 Feb 2016

6

2

280

23-02-2016 23:00

Close encounter (view on black)

23 Feb 2016

16

11

242

Combination of a long (1/8 sec) and a short (1/500 sec) exposure. The area around Jupiter I "brightened up" a bit to show Jupiter's moons (the 4 major moons are all visible)

M45 The Plejades (view on black)

19 Feb 2016

8

3

214

80 exposures combined. Used telescope to track the movement of the stars A positive and a negative print to show why I sometimes prefer the negative one. It shows the faint features better (but also the disturbing light of the moon on the left)

' t Klooster in Ter Apel

16 Feb 2016

13

10

395

Startrails: 90 exposures 10 seconds each, f=10 mm, f/8, ISO 1600. For the building I used 1 exposure of 4 second, f=10 mm, f/10, ISO 1600

Orionnebel

15 Feb 2016

19

9

336

mit nur ein 200 mm Tele 75 Einzelaufnahmen

Orion (negative)

12 Feb 2016

3

9

231

90 exposures, 30 sec each

Dataprocessing (view on black)

12 Feb 2016

9

5

223

Left: combination of 90 exposures (30 sec each), you see the earth moving! Middle: Used a gaussian filter to blur the stars and get a "background" . This shows the light pollution. Right: Subtracting the background from the original

Greenbank, 300 ft Radiotelescope

30 Jan 2016

8

4

227

1982 slide. This telescope collapsed during an observing run in 1988. public.nrao.edu/telescopes/historic/300-foot-telescope

Starry night in Emsland (view on black)

28 Jan 2016

10

5

257

Viewing south (view on black)

28 Jan 2016

11

9

236

Orion, Taurus, Gemini, Canis Major and Canis Minor

Comet Catalina

18 Jan 2016

7

3

214

Combined 16 exposures centered on the comet. This gives the artifacts around the brighter stars. Shown as a negative in order to show the faint coma around the core of the comet