| Joined: | Mon Apr 2nd, 2012 |
| Location: | South Lakeland, UK |
| Posts: | 4066 |
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Please bear in mind these are not intended to have artistic merit, they are simply the results of experiments and an attempt to learn how to set up an Equatorial mount for photography. I am learning and making gross mistakes.
These images were made with a Vixen EQ-polar mount and a D800 with 70-300 lens and 16mm f/2.8 fisheye lens. They were 25 second exposures taken at 26 second intervals - one second gap. The black spot right of centre must be a spec of dust on the sensor.
The first image was made without the Vixen mount motor running, about 40 exposures. The bright star to the left near the centre, is Polaris. You can see how far it is from the celestial polar centre.
This was taken after the initial 40 exposures, I switched the motor on but the setup must have been very wrong. I think I rotated the polar locating scope the wrong way, I was trying to get Ursa minor aligned but somehow I missed!
This is the two above images in one.
Finally back to Stickle, only a short session with the fisheye. 74 images stacked. Notice I am much nearer the correct polar centre. Again, 25 second exposures at f/4.0 for some reason only ISO200, I must have forgotten to re set it for astro, I usually run at ISO 1600.
I need to sit down and set up some dedicated menus for astro photography.
____________________
Robert.