Showing posts with label Endeavour. Show all posts
Showing posts with label Endeavour. Show all posts

Saturday, 20 February 2010

A magnificent view of the Space Shuttle Endeavour STS-130 and the ISS in tandem!



click image to enlarge

The weather predictions for this morning suggested a possibility of clear sky - and hence a possibility to see a morning twilight pass of the duo Space Shuttle Endeavour STS-130 and the International Space Station, which decoupled a few hours earlier.

I observed from the appartment of my girlfriend this time, who lives at the 2nd floor of the same building as me. This allowed a wide vista over the rooftops towards the west and southwest. The pass happened around 6:49 am local time (5:49 UTC on the 20th), the sun was at an altitude of -10 degrees, and hence twilight coloured the sky already. I could see Saturn, Spica and a couple of other stars, low in the southwest. The pass would reach a maximum altitude of 20 degrees.

The pair was easy to see as they majestically sailed over the rooftops in the twilight sky, rising over the rooftops below Saturn and then passing Spica. They were very close, 1.7 degrees apart around 5:49:30 UTC (measured from the photograph above), passing the same point about 3.7 seconds apart. The Shuttle, at around magnitude 0 to +1 the fainter of the two, was slightly ahead of, and a tiny bit lower in declination than, the ISS, which attained about magnitude -1 to -2. A magnificent view!

Above is one of three pictures I took. They suffered a bit from vibrations, as I had only limited space to put up the tripod in the window-sill of my GF's bedroom, and the window-sill apparently did transfer some vibrations to the tripod & camera. The picture shown above shows the duo close to Spica (alpha Virgo) and is the image with the least "wobbly" trails. Movement of both objects is from right to left in the picture.

Friday, 17 July 2009

Space Shuttle Endeavour STS-127 in deep twilight (footage)

Yesterday at 22:30 local time (20:30 UTC), in deep twilight with the sun barely 5 degrees below the horizon, I watched a very fine near-zenith pass of the Space Shuttle Endeavour mission STS-127, launched Wednesday. It was bright, being easily visible against the bright blue sky (where only Vega and Arcturus were readily visible). I estimate it must habe been between mag. -1.5 and -2.5.

I filmed part of the pass with my Canon EOS 450D photo camera tethered to my laptop, using 'EOS Camera Movie Record' software (that software basically taps the live view signal of the camera, enabling to "film" with it). Here is some footage, showing it pass near Vega (in the top of the screen). The original movie file is much better quality than this crappy YouTube version by the way (and Blogspot did not want to upload the video alas):

Friday, 10 August 2007

Observed Space Shuttle Endeavour STS-118 amidst flying clouds

Miracles do happen after all. This evening (9-10 August) was the only evening with an opportunity to spot the Space Shuttle Endeavour STS-118 on its way to the ISS. And I thought it was a lost case. Heavy cloud cover.

The first pass in deep twilight at 20:03 UTC was indeed lost. An unbroken cloud cover, and no hopes for the next and final pass, 21:37 UTC.

But Lo Behold....at 21:15 UTC I noted gaps in the cloud cover. I could see Vega and Arcturus. The situation was very dynamic, with parts of the sky opening and then filling up again in a matter of tens of seconds, the cloud cover moving very fast...but breaking up a little.

At 21:30 I was ready at the courtyard. At 21:34 I spotted the ISS, passing through the zenith very close to Vega. Three minutes to go for the Shuttle, and the zenith was filling up with clouds again.

21:36....I looked west, hoping to see it near Arcturus. Brief glimpse of the latter, but no luck regarding the Shuttle. Clouds occupied the west. Then moved my watch to the zenith. It was breaking open again. I could see Vega.

21:37....YES!!!!!! For maybe 20 seconds I see it, passing a bit south of Vega, fast and about magnitude 0, similar to Vega!

20 seconds and then it was gone in clouds again. Did not even attempt to photograph, it was futile.

But I saw it! :-)