Archive for the Astrophotography Category
I tried to use iPhone app Sky Guide to predict where the moon would rise on the horizon – it was off by 10 degrees or so… We were set up behind Taos Mountain, so by the time the moon peeked over the mountain, the sky was really dark (which makes exposure tricky). And boy, it REALLY rises fast (approximately one moon-diameter every two minutes).
This image: tripod, cable release 70-200 at 150mm, 1/100 sec f/10 ISO 200 extreme crop.
I made 1,000 or so 20 second exposures last night: Rokinon 14mm f/2.8 ISO 6400, Lightroom for dehaze and noise reduction, Starstax for the composite. Go ahead – order a print – you know you want to!
These images are composites of multiple frames: 25, 53, 76, and 157, so at 30 seconds per exposure, the images capture 12, 25, 38, and 78 minutes of star movement. I use free software called StarStaX to blend them all together.
Prospecting for Eta Aquarids meteors – none in this frame. Looking southeast, thirty second exposures f/4.0, 17MM ISO 6400. I set the camera up at 10:30 and set a self-timer delay for 3-1/2 hours, so it would start making exposures around 2AM. Mars is low at right.
These next two are consecutive 30 second frames showing an aircraft (given away by the strobing beacon lights), and a satellite that brightened and dimmed during the 60 seconds it took to make these images.
There are meteors in both of these images:
Twin satellites – interesting:
Meteor and aircraft:
As dawn was breaking, a classic Iridium flare, top right: