|Brad Templeton's Photography|
|Brad Templeton Home Photo Home Panoramic Photo Home Up|
|Burning Man Death Valley China Leo 02 Venus Oregon Utah Arizona Black Sea Japan|
For the Leonids 2002 shower, the best peak was going to be in North America, so we stayed close to home. Like many we went to the most popular observing site for Bay Area astronomers, Fremont Peak near Salinas/Monterey California, home of an observatory with 30" reflector.
The prior year people reported a huge crowd, this year the crowd was quite light. Campgrounds filled, and probably 100 people were there, only about 20 at the actual observatory where I set up. Of course the full moon was the impediment, but we came to high altitude to help reduce that.
This year's show was not nearly as good as 2001. In 2001, we journeyed to Japan to get the superior Asian peak. The show was astounding, with a ZHR of at least 7,000 or more. While my photos of the 2001 Leonids were damaged in developing, they were astounding. Each 3 minute film shot in 2001 had multiple meteors. Several shots had 10 or more, I had one shot with 20, all from a 5 minute exposure. Meteor photographers will realize just how astounding that is. One digital 20 second shot with 80mm field of view had 3 meteors.
This year the show peaked with a ZHR probably in the 800 range. The peak was very brief, around 2:30 to 3am Pacific. Quickly after that the show became more mundane. We didn't personally do any scientific counts, unfortunately. Due to the need for shorter exposures with the moonlight, too much time was spent worrying about cameras. However, counts were easily 10-15 per minute during the peak times.
For photography I had 3 cameras. The Canon D60 with 17mm/2.8 lens shot 30 second exposures at 800 speed constantly all night. The film body shot Superia 800 in 2 minute exposures with a Canon 16mm/2.8L lens. A Pentax P&S shot Superia 800 and Kodak HIE infrared film. (Still waiting on the latter.)
I got about 33 meteor shots with the D60, which is pretty incredible when you consider that an ordinary night of meteor photography gets 1 or 2. I only got 15 shots with meteors on the film, which at 2 minutes was already getting pretty washed out with the moonlight. The most I saw in any single frame was 3. Only a few fireballs were caught.
2001 had bright meteors all night, though of course the peak, at 2 per second, was astounding. So I guess I am spoiled!
Fremont Peak is about 2750 feet up, between Salinas and Hollister near Monterey in California. It's about 90 minutes drive for astronomers in the otherwise highly light polluted SF Bay Area. It gets its darkest skies when there is a fog below the peak that blocks out all the city lights, but it generally has high quality dark skies. There is a 30" scope there and the rangers are very astronomy friendly.
Stories went that during the 2001 Leonids the peak was packed, and not long after dark people could not even drive in, they had to park further down and hike up. Due to those warnings, we arrived early but there was no big crowd and we got a campsite, though not in a clear area.
Many of the photos here came from the Canon D60 camera. The D60 is amazing, and even when warm does not have much noise. It is easily able to shoot a 30 second exposure and ISO 800. This is similar to a 90 second film exposure due to the reciprocity failure of most films, though of course for meteors that's actually bad.
In fact, it can shoot up to about 2 minutes but it starts getting a purple glow from internal heat. Still, pretty amazing at 6 million pixels. There is noise, so you can't get all that resolution out, but I wanted 800 ISO to catch the fainter meteors.
I went back and forth a lot over what film to use. I tried Superia 400 thinking it had bad reciprocity failure (which is not failure at all for meteor shooting) but later the tables I found said only the 800 had failure of 2 stops to get 64 seconds. (ie 256 seconds is like 64 seconds with no failure.) However, the 400 speed had too much light fog at about 4 minutes, so I stuck to 2 minutes. I will probably not do this again, but if I do I will hunt the film with the greatest reciprocity failure I can find.
The nice thing about the digital is you can automate it. I just pointed it at the sky, set it for 30 second exposures and locked down the cable release. It just keeps shooting until the CF card fills up or battery dies. That happened a few times because ISO-800 shots with high noise make very big jpegs. Raw would be even bigger, and would be recommended if you had a 1GB microdrive.
Kathryn's old P&S camera also could do automated shooting, but at 2 minutes per shot at f/3.5. Unfortunately, wide open like that her camera had terrible light fall-off and so didn't turn out well.
As noted, the fiddling to do the 2 minute exposures by hand made me focus on that and watching, not counting.
The moonlight of course caused all this trouble, but it did mean that many of the scenes show the people on the ground and hills to be brightly lit, which is a nice effect. It's interesting how the moonlight turns the sky blue in long exposures, which I guess should not be surprising.
Later that night after we got back to our tent, we looked up, and the space station passed almost dirctly overhead. We hadn't even stopped to check if it was passing.