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The San Francisco Photography Meetup Group Message Board › An invitation to the Lunar Eclipse shoot @ GG Bridge

An invitation to the Lunar Eclipse shoot @ GG Bridge

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A former member
Post #: 12
Hey gang, here's an invitation to join the Nor-Cal group. We'll be shooting the lunar eclipse somewhere in SF. Detail link here: http://photo.meetup.c...­. Some of us will be doing a time-lapse shoot and if you've never done one its very dramatic.
Come join us we're a very enthusiastic group with some great photographers.
prodesma
user 5562241
Fresno, CA
Post #: 23
thanks for the heads up Gary... Gary, as you well know, i've participated in events from each of these two groups (i know you've come down from Sac for an SFBAS/flickr shoot in GGP last year) and truly find both to be full of wonderful peeps... this isn't about ego or showing off gear... both groups are filled w/ enthusiasts (amateurs to pros) most of whom are willing to help share experiences and tips. and generally just 'good people'. really enjoy shooting w/ everyone in both these groups.

i'll be in communication w/ Farzad more to try to figure this one out. maybe i can do some location scouting for ideal locations... i'm figuring on a 300mm to 600mm lens on my Nikon D300... which is a 1.5x crop. therefore, i'll scout where i feel a really great capture could be had w/ this set-up in mind. those w/o a long tele lens may be frustrated by the distance and image quality...

moon shots are a lot tougher than many expect. long fast glass can really, REALLY help to capture this stunning event. let's hope for great weather! any suggestions from SF Photog MU group members on a location would be wonderful too.

cheers.

david
A former member
Post #: 41
Darn, I have a day job. However, if you post where you're going to meet I can try to get there by 5:15-5:30.
A former member
Post #: 15
Hey David, thanks for the reply. If you could attend that would be great. I speak for all who will attend we would all greatly appreciate your input and guidance.

I'll be renting some glass for this shoot and I hope there's not a fog issue. I know its SF. Location is crucial if you have time to scout that would be great. If not we'll wing it. I think it would be a good idea to have a plan "B" shoot if its foggy. As we get closer to the date I will post more info including my cell # so if others can attend later (Jean) you'll be able to find us.

Any input would be great.

Cheers

Gary
prodesma
user 5562241
Fresno, CA
Post #: 25
Thanks for the kind words Gary. Any of you from up north are welcome to contact me via e-mail or phone anytime. And I'd even say you can distribute my number PRIVATELY (just not on a public forum, please).

I'll try to scout a bit as time allows. I've a few ideas in mind, but really need to find out/learn a closer proximity to where the moon will be that day.

You're renting some long glass that day? Cool. Hey, maybe I could borrow it for about 15 minutes? ha ha. As long as it's the RIGHT 15 minutes. Just funnin.' I've got my Sigma 100-300mm f/4. Prolly could really do w/ a 1.4x TC. I've got a 2x TC but it's manual focus and that's not very good for moon shots in general. Looks like I'll rent a 1.4x and should be pretty happy. (That's a 630mm equiv at f/5.6 on my 1.5x crop, right?).

I'm figuring on shooting 5F brackets at 1.0EV. The question is do I use 12-bit to go 8 fps to not worry about movement/arc/transit. Or go 14-bit (2.5 fps) for better tonality and depth. Gosh it would be nice if I test this ahead of time. LOL. I'd suppose I'll shoot ISO 500-ish and maybe f/8-9. That's one-stop or one and one-thirds stops off from wide open, so critical sharpness should be better, I figure.

Cheers.

david
A former member
Post #: 31
I did some virtual scouting for a GG bridge/moonrise location with google earth.

First, at this site, I got the angles & locations: http://aa.usno.navy.m...­

Total Eclipse of the Moon SAN FRANCISCO, CALIFORNIA
h m Azimuth Altitude
Moonrise 2008 Feb 20 5:46 76.3 ----
Moon enters totality 2008 Feb 20 7:00.5 87.4 13.2
Middle of eclipse 2008 Feb 20 7:26.0 91.2 18.0
Moon leaves totality 2008 Feb 20 7:51.5 95.2 22.8
Moon leaves umbra 2008 Feb 20 9:09.1 108.9 37.2
Moon leaves penumbra 2008 Feb 20 10:17.2 125.0 48.8
Moonset 2008 Feb 21 7:07 279.5 ----

azimuth 90 deg is due east

So it looks like a 100-foot trail out this ridge: http://maps.google.co...­
You have to park at the junction of Conzelman & McCollough where they lock the gate around 7PM & walk up about 1/4 mile, then the view should look like this:
http://edgehill.net/t...­
I'm not sure about the height & arc but it seems somewhere in that ballpark. All the action from moonrise till 10:17 would happen in 52 horizontal degrees which it looks like would need about a 50mm lens on cropped frame: http://en.wikipedia.o...­
so... use a 1.5x or .66x multiplier and the 50mm 39.6 degree horizontal field of view on full frame becomes 59.4 degrees (don't trust my math though!)

Hmm, so if the altitude is 48.8 degrees you'd need a 35mm lens with the bottom of the frame on the horizon to fit it all. Here's a 35mm view from the beach at the bottom of the mockup: http://edgehill.net/C...­
but the moon rise would be behind land from there and the moon higher in the sky so it won't overlap the bridge for telephoto shots unless you are out in a boat :-)
A former member
Post #: 18
Hey Paul,your posting is one of the reasons why I come to SF for the meet-ups. To be inspired by and exposed to( bad pun, forgive me) photogs like you, David, our fearless leader Shelah and so many others in this group.

Hopefully many will be inspired to come and once again I invite all, it will be epic.

Cheers

Gary
Anny
user 3380623
Citrus Heights, CA
Post #: 31
Oh my all of this stuff about what horizontal degrees....I am totally naive about this stuff.smile Also can anyone explain a time lapse shot please? What is the diff between that and a long exposure?
thanks for your help
Anny
A former member
Post #: 32
I saw some neat eclipse shots that overlay a time lapse into one still photo with maybe a dozen steps along the moon's arc in the sky as it changes color & shape: http://tbn0.google.co...­ like the mockup I linked to above: http://edgehill.net/t...­

This is a time lapse moon rise movie: http://edgehill.net/C...­ scroll down for the movie. The moon won't be close enough to the bridge for this eclipse to get that telephoto clip looking through the bridge plus that's just a short part of the long eclipse.

Those show the moon very small & I'm not sure how effective that will be if you zoom way out. With a long lens the eclipse will look like this: http://edgehill.net/M...­

So I don't know maybe a view across the bay bridge or something would be more interesting, anyways that gives a general idea of the scale involved.
Andreas
Sunny_Vale
Sunnyvale, CA
Post #: 9
I have been thinking about Kirby Cove too -- another location I have in mind is Alamo square with the victorian house in the foreground. Or use a long lens to catch the eclipse over some of the tall skyscrapers in financial district.
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