ISS almost in a Solar Flare
Taken by Miguel Claro on June 14, 2017 @
Mourão, Dark Sky® Alqueva Reserve, Portugal
Click photo for larger image
| |
Camera Used: NIKON CORPORATION NIKON D810A
Exposure Time: 1/6400
Aperture: f/1.0
ISO: 1600
Date Taken: 2017:06:30 00:58:03
|
|
| More images
Details:
Our Sun is now entering in a relatively quiet cycle of 11 years, featuring only a small sunspot, but an interesting group of active solar flares in the upper limb of the suns disk, this image shows some extra activity, with the dark silhouette of ISS crossing the sun´s disc at a distance of 426km from us and a speed of about 28,000km/h, seems to almost reach one of the solar flares. This large artificial satellite with a width of 108.5 meters seems although very small when compared with the Solar disc with an angular size of 31.5′ is actually 29.2 times larger than the ISS in the moment of the passage. Hard to see it even with a special telescope equipped with Ha filters, only the camera shutter of a fast sequence of shots could capture this rare moment that happens in a blink of an eye, as it was seen from Mourão, Dark Sky® Alqueva Reserve, Portugal, on June 14, 2017, at 13h53m10s with a total duration of only 0,54 seconds. Its very interesting to recognise on the picture the ISS structure with the solar panels and main body well distinct, remembering that this celestial object have astronauts on board permanently, with a privileged view from our beautiful “Pale Blue Dot”.
https://www.miguelclaro.com/wp/?portfolio=international-space-station-crossing-the-sun-in-flares
Technical details:
LUNT LS100T Ha | AZ-HEQ5GT | Nikon D810a (DX) | F/7 | ISO1600 – Exp. 1/6400 | Median Sum of 80 images Disk + 80 images Solar Flares. Mourão, Dark Sky® Alqueva, Portugal. 14/06/2017 13h53m10s.
ISS Details | Detalhes da ISS:
ISS angular size: 64.80″; distance: 426 km
Angular separation: 1° 09′; azimuth: 196.2°; altitude: 73.5°
Center line distance: In the center; visibility path width: 3.93 km
R.A.: 05h 35m; Dec: +22° 25′; parallactic angle: -16.5°
ISS velocity: 58.1 ′/s (angular); 7.20 km/s (transverse)
ISS velocity: -1.63 km/s (radial); 7.39 km/s (total);
Direction of motion relative to zenith: -31.6°
Sun angular size: 31.5′; 29.2 times larger than the ISS
Photographer's website:
http://www.miguelclaro.com
|
|
|
