tiabunna

tiabunna club

Posted: 17 Jan 2017


Taken: 16 Jan 2017

18 favorites     19 comments    642 visits

40 sec. f/5.6 100.0 mm ISO 6400

RICOH IMAGING COMPANY, LTD. PENTAX K-1

smc PENTAX-FA MACRO 100mm F2.8

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See also...

Scene In Scene In


Silver Surfers Silver Surfers


Tolerance Tolerance


Sight and Sound Sight and Sound


Star Trails Star Trails


Pentax Pentax


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Keywords

space
Southern Hemisphere
M41
Orion
NSW
Australia
prime lens
nebula
satellite
stars
sky
SMC Pentax-FA 1:2.8 100mm macro


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642 visits


Out of this world

Out of this world
Looking north toward Orion and the M42 nebula (those of you in the northern hemisphere usually see this upside down) using the astrotracer in the K-1. This repays viewing large and if you look carefully you will may the traces of no fewer than four satellites (none were visible to the naked eye) - the underlying concern in the film "Gravity" about space junk becomes understandable, even if the science in the film was sometimes questionable. Here's the obvious music (I passed over the version by George Clooney's aunt.:-) ).

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Latest comments - All (19)
 Polyrus
Polyrus
Fascinating to see, but for now I'm concentrating on trying to see sights a bit nearer to home ;-)
7 years ago.
 Amelia
Amelia club
I can't see the satellite traces on my small screen, George, but this starry sky certainly makes up for that. Where we live, even in a village, there is too much light pollution.
7 years ago.
 GrahamH
GrahamH club has replied
So the longer the exposure the smaller/narrower the part of the sky recorded?
7 years ago.
 tiabunna
tiabunna club has replied
The full frame is recorded while the sensor is tracking the sky (though limited to the extent of movement available). What happens when the limit is reached I don't know I'm afraid (and nothing on this in the manual). My guess is that the limit is probably a matter of minutes and then, presumably, the sensor stops and star trails begin (given that the earth is rotating at about 15 degrees/hour).
7 years ago.
 GrahamH
GrahamH club has replied
OK thanks, did some looking online. I get now that the sensor moves and so that defines the limit.
7 years ago.

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