Saturday dawn conjunction

Hi all,

Here is Venus and the Moon rising over Brisbane city yesterday morning (October 13th). I took an exposure every 3 and a half minutes as the pair rose, and them stacked tham to produce this image.

Thanks for looking!

Cheers,
Stephen

Love everything about this, have you done these before or is this your first attempt?
If done others I'd like to see them.

What lens did you use for this? Your Tokina 11-16 f/2.8 or?
3 1/2 minutes by trial and error, or is there some excel calculator to help determine spacing of the moon using such and such lens.

mtbdudex wrote in post #15118845

Love everything about this, have you done these before or is this your first attempt?
If done others I'd like to see them.

What lens did you use for this? Your Tokina 11-16 f/2.8 or?
3 1/2 minutes by trial and error, or is there some excel calculator to help determine spacing of the moon using such and such lens.

My fail safe method is to under estimate the time between shots. I probably would have taken a shot every minute so when I got back home I could delete every 2nd or third shot to space out the moon to my liking.

Really good shot by the way, was it from Mt cootha?

Forgot to ask, did you do a separate exposure just for the city, then multiple exposures for the sky, then in post combine them?
I'd try it this way to have as crisp/detailed city image, since no matter what with multiple exposures of foreground you will lose details due to thermal air disturbances, minor tripod shake, etc.

mtbdudex wrote in post #15118845

Love everything about this, have you done these before or is this your first attempt?
If done others I'd like to see them.

What lens did you use for this? Your Tokina 11-16 f/2.8 or?
3 1/2 minutes by trial and error, or is there some excel calculator to help determine spacing of the moon using such and such lens.

Thanks Mike!,

My first attempt at this made APOD earlier in the year:

http://apod.nasa.gov/a​pod/ap120426.html

There's a couple more in my flickr photostrteam as well. I think this is my best result to date though. For this one I used the 15-85mm lens at 56mm, f/5.6, 400 iso and 4 sec exposure. I worked out the 3.5 minute gap by trial and error. Note that this time spacing is independent of the lens focal length - it is determined by the Earth's rotation, not the lens magnification.

I didn't do separate exposures for the foreground city and blend it in, I just stacked the individual exposures. Your idea would probably give a sharper foreground...

neimad19 wrote in post #15118920
My fail safe method is to under estimate the time between shots. I probably would have taken a shot every minute so when I got back home I could delete every 2nd or third shot to space out the moon to my liking.

Really good shot by the way, was it from Mt cootha?

Thanks Damien! Your right - it was from the lookout at Mt Coot-tha. You've obviously been to Brisbane before!

Cheers,
Stephen

S.R.M. wrote in post #15119070
Thanks Mike!,

My first attempt at this made APOD earlier in the year:

http://apod.nasa.gov/a​pod/ap120426.html

Thanks Damien! Your right - it was from the lookout at Mt Coot-tha. You've obviously been to Brisbane before!

Cheers,
Stephen

Lived in the Redlands for 19 years

Gorgeous image...Frame and hang!

Stephan;
You've given me an neat tool/technique to add to my knowledge base, thx.

What I'll add is 2 years ago I did test strips for req'd exposure of crescent moon to show balance of reflected earthlight to reflected sunlight;

rrblint wrote in post #15119294
Gorgeous image...Frame and hang!

Thanks Mark!

Cheers,
Stephen

mtbdudex wrote in post #15119846
btw, I see you watermark your images, do you also file/submit for copyright to them?
Doing a drop of your APOD onto Google image shows 55 websites that used it.

I was under the impression that copyright automatically goes to the person who took the photo Mike. So I haven't followed up with copyright. However, I only ever upload small versions to the web, and as you said these are watermarked. I had a look at some of the sites in your search, and they seem to acknowledge me as the photographer, so that's fine with me.

Cheers,
Stephen