Show everyone the latest shots which make you feel dead chuffed with your camera choice
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We have been reeling under hot weather in the Western United States with temperatures reaching 40C in the Silicon Valley.
My wife and I were in the backyard. It was a balmy night without any wind and the temperature was around 25C at 11pm.
This image was a stacking of 22 images, each was exposed to 8 secs, at f4 using CZ2470 at 24mm. The bluish purple you see
is the light pollution from the city lights which were at the bottom of the image.
Wow - awesome is the only word Sury when looking up at the night sky like that. Did you have to compensate for the Earth's rotation with the shots in the stack?
(Sounds hot - I think I would sleep in the backyard!)
Nex 5, Nex 6 (IR), A7M2, A99 and a bunch of lenses.
Andy,
Thank you. This is wide field astrophotography. From what I gather, if you follow
the rule of 500 which means exposure in seconds = 500/focallength will not give
you any star trails. Since each of the images is faint, I took multiple shots, with
few dark frames (lens covered with cap) of the same duration and let DSS take
care of it. I did some post processing. I bought a interval timer from eBay that I
did not test it. That one would take the shots for a programmed duration, for programmed
number of times. May be tonight.
That’s a good one Mark, I did a bit of a map in my astronomy program if you’re interested, I took the labels of a lot of things out (too cluttered) and left in some of the main things.
Greg
Ps I did eventually find the section of sky that Sury photographed too, the problem was I couldn’t get the section of sky to line up properly enough (distortion) within the border for it to be meaningful, also the brightness of the stars were bollixed up, the bright ones were reduced in brightness and the faint ones were increased in brightness so they all pretty much looked the same brightness, which isn’t like it is in reality, and that made the job of finding the section of sky more difficult.
Mark's section of sky (roughly)
[img]Looking-towards-the-centre-of-the-milky-way.jpg[/img]
Thanks for looking that up Greg! The image is a repost fron last year. I remember us having a discussion about where I was en which direction the camera was pointing or something along those lines.
I find astrophotography to be very fascinating, but I don't live in the best spot for that, rather one of the worst.
Did I mention that this forum is great and have some fantastic teachers, mentors and coaches?
If I did not, then let me mention it. This forum has fantastic teachers, mentors and coaches.
With best regards,
Sury
p.s. I will get back to active participation soon once the office pressures have eased up.
Sury I’ll put the one up I did for your sky section, it might be a bit difficult to get orientated with it and I didn’t put the join-the-dots constellations in that one, just the names.
Greg
Sury old chap all I did was use my ‘Starry Night’ program, which isn’t too bad, I’m not really a pro at that one, I haven’t found out yet how you disconnect the horizon from the ephemeris so you can push and shove the sky around willy nilly, which you sometimes need to do because even though you can select a viewing ‘location’ anywhere on the earth to look from, in your case I selected San Jose of course but sometimes the altitude above sea level of the location can affect the view you see on the screen, and the time of night as well as the month of the year.
The stars (constellations) vary quite a lot throughout the year observing from any location, (and throughout a given night).
But anyway I got pretty close by setting a time that might be appropriate, about 10PM I think, and just looked at the sky while panning around (I wasn’t sure which direction you were looking at the time, or the angle up but I kept the artificial horizon just visible at the bottom), in the end it wasn’t that difficult to find some matching star formations. The difficult part was alignment, it needed to be rotated and pushed across at the same time to make it better but the program wouldn’t let me do that.
Maybe if I had experimented looking at the same patch of sky from a location further south or north (still in the US west coast) it might have lined up better.
After I got it as good as I could manage in a reasonable amount of time and set the amount of objects to show on the chart, (there are a multitude of settings for that and it’s easy to get too overloaded with stuff) I just did a screen print and a jpeg from that.
You really need to see sky charts and photos at full screen I reckon, 1000pixels wide doesn’t really do it.
And that was about it I think, let me know if I need to clarify something or other, I might have condensed the explanation a bit too much in places to make sense.
Greg
Greg,
Thank you. I found the Starry Night chart too. I was thinking you were somehow able to
superimpose the labels on my photo. I see that you posted the Starry Night chart for the
night. Very clever. That makes sense. I could not figure out how to manipulate the chart. Will play with it
a tad more.
That's one glow in the dark bush!
