Astronomy - David Mathre Photography

Tuesday (05-February-2013) — Norway

Gone to See Norway 2013. Chasing the Northern Lights. Day 8: Northbound Hurtigruten Coastal Voyage.

On the sixth day of the northbound Hurtigruten coastal voyage, the MS Nordkapp stops in seven ports: Øksfjord (02:00-02:15); Hammerfest (05:15-06:45); Havøsund (09:30-09:45); Honningsvåg (11:45-15:15); Kjøllefjord (17:30-17:45); Mehamn (19:30-20:00); and Berlevåg (22:30-22:45).

Last night the ship went to the narrow entrance of Trollfjord, and shined some lights to show the narrow passage and high walls. In the summer the Hurtigruten ships go into Trollfjord as part of the northbound voyage. In the winter they only go to the entrance due to avalanche danger. After the ship turned the lights off, I thought that I got an image with a glimmer of green from some low northern lights. The ship staff told me that it was just a reflection on a cloud from one of the fish farms. I went out again early in the morning and got an image that does show some faint northern light activity. Later in the evening, I got some more images showing some northern light activity. Several passengers asked why my camera was able to see the northern lights as bright green where they could barely see anything with their eyes, let alone with point and shoot cameras. The tour director on the ship was not yet making a ship wide announcement that northern lights were visible since he didn’t want folks to go away and say “is that all there is?”. Before beginning this trip I debated not taking a DSLR. Now I am glad that I did. These images were taken at ISO 1600, f/1.4, and 4 seconds. I didn’t have the tripod out with me so I held the camera body against my chest. You can see some camera motion in the stars, but it is not as bad as I thought it would be. For white balance, I used 3500 °K as a starting point since that is what I use when photographing star trails.

Early Morning (04:22 AM) Glimmer of Northern Lights While Sailing North on the Hurtigruten MS Nordkapp. Image taken with a Nikon D800 and 24 mm f/1.4G lens (ISO 1600, 24 mm, f/1.4, 4 sec). (David J Mathre) — Early Morning (04:22 AM) Glimmer of Northern Lights While Sailing North on the Hurtigruten MS Nordkapp. Image taken with a Nikon D800 camera and 24 mm f/1.4G lens (ISO 1600, 24 mm, f/1.4, 4 sec). (David J Mathre)

Northern Lights While Sailing North on the Hurtigruten MS Nordkapp. Image taken with a Nikon D800 and 24 mm f/1.4G lens (ISO 1600, 24 mm, f/1.4, 4 sec). (David J Mathre) — Northern Lights While Sailing North on the Hurtigruten MS Nordkapp. Image taken with a Nikon D800 camera and 24 mm f/1.4G lens (ISO 1600, 24 mm, f/1.4, 4 sec). (David J Mathre)

Two-Years Ago (02-January-2011) — Argentina

Gone to See Patagonia 2010/2011. Photography Workshop with Thom Hogan. Day 7: Night Sky in Patagonia.

I got up really early before dawn to see the night sky in the southern hemisphere. I’ve wanted to see the Southern Milky Way and the Large and Small Magellanic Clouds. This was the first time that I saw the Orion constellation upside down. I don’t recognize many of the other stars and southern constellations. Images while staying at Hosteria El Pilar in El Chalten in Argentina.

Night Sky in Patagonia. Hosteria El Pilar, El Chalten, Argentina. Image taken with a Nikon D3x and 16 mm f/2.8 fisheye lens (ISO 400, 16 mm, f/4, 30 sec) (David J Mathre)

Night Sky in Patagonia. Hosteria El Pilar, El Chalten, Argentina. Image taken with a Nikon D3x and 16-35 mm f/4 lens (ISO 400, 28 mm, f/4.5, 58 sec) (David J Mathre)

Night Sky in Patagonia. Hosteria El Pilar, El Chalten, Argentina. Image taken with a Nikon D3x and 16 mm f/2.8 fisheye lens (ISO 400, 16 mm, f/4, 58 sec) (David J Mathre)

Night Sky in Patagonia. Hosteria El Pilar, El Chalten, Argentina. Image taken with a Nikon D3x and 16 mm f/2.8 fisheye lens (ISO 400, 16 mm, f/4.5, 58 sec) (David J Mathre)

Southern Hemisphere Milky Way. Image taken with a Nikon D3x and 50 mm f/1.4 G lens (ISO 100, f/4, 50 sec) (David J Mathre)

Night Sky in Patagonia. Hosteria El Pilar, El Chalten, Argentina. Image taken with a Nikon D3s and 50 mm f/1.4G (ISO 12800, 50 mm, f/2, 1/15 sec) (David J Mathre)

Sunday (23-December-2012) — New Jersey

Time-Lapsed Video of the Night Sky, Star-Trails, and Geminid Meteor Trails

If you are not able to view the above video, use the following link:

Saturday (15-December-2012) — New Jersey

Late Fall Night Sky Anomaly. Super-Nova or Geminid Meteor Coming at Me?

The sky was clear Thursday night. I had three cameras out to capture Geminid meteor trails. Friday night the sky was also clear, so stayed up again to capture any late Geminid meteor trails. After being up two nights in a row, I really needed to catch up on some sleep. When I started to review the images today, I found an anomaly in the star trail image between 2-3 AM Friday morning. The images for this composite were taken on a Nikon D4 with a 14-24 f/2.8 lens. I have trouble with condensation on this lens and this night was no different and because it was cold frost formed on the center on the lens. The result is that light getting to the center of the image is significantly attenuated. I didn’t expect to see anything in the center area because of the frost — but there was one bright star. The unusual star is actually brighter than Sirius. I went back and reviewed the individual images, and found that this “star” only appeared at 02:19 AM — not before and not after. I checked the images from the other two cameras. The D800 with a 16 mm f/2.8 fisheye lens covered the same space, and indeed it also captured the same anomaly. I didn’t see any news about a super-nova, so did I capture an image of a Geminid meteor coming right at me? Good thing that they burn up in the atmosphere!!

Late Fall 02:00 to 03:00 AM Sky Star Trail (with anomaly) in New Jersey. Composite of 60 Images taken with a Nikon D4 and 14-24 mm f/2.8G lens (ISO 200, 14 mm, f/2.8, 59 sec) using Star Trails. (David J Mathre)

Late Fall 02:18 AM Sky in New Jersey. Image taken with a Nikon D4 and 14-24 mm f/2.8G lens (ISO 200, 14 mm, f/2.8, 59 sec). (David J Mathre)

Late Fall 02:19 AM Sky (with anomaly) in New Jersey. Image taken with a Nikon D4 and 14-24 mm f/2.8G lens (ISO 200, 14 mm, f/2.8, 59 sec). (David J Mathre)

Late Fall 02:20 AM Sky in New Jersey. Image taken with a Nikon D4 and 14-24 mm f/2.8G lens (ISO 200, 14 mm, f/2.8, 59 sec). (David J Mathre)

Late Fall 02:18 AM Sky in New Jersey. Image taken with a Nikon D800 and 16 mm f/2.8 fisheye lens (ISO 200, 16 mm, f/2.8, 59 sec). (David J Mathre)

Late Fall 02:19 AM Sky (with anomaly) in New Jersey. Image taken with a Nikon D800 and 16 mm f/2.8 fisheye lens (ISO 200, 16 mm, f/2.8, 59 sec). (David J Mathre)

Late Fall 02:20 AM Sky in New Jersey. Image taken with a Nikon D800 and 16 mm f/2.8 fisheye lens (ISO 200, 16 mm, f/2.8, 59 sec). (David J Mathre)

Thursday (06-December-2012) — New Jersey

Backyard Late Autumn Early Morning Sky: Last Quarter Moon.

It has been a long, but mainly productive day. I got up very early to get a picture of the last quarter moon. I wanted to try out photography of the moon through a 500 mm telephoto lens using the Nikon 1 V1 camera. Because of the smaller size of the image sensor vs. a 35 mm (FX in the Nikon digital world) the effective field of view with this setup is equivalent to using a 35 mm camera with a 1350 mm lens (~2.7x). Since the N1V1 camera does not have a mirror (the mirror in a DSLR needs to move out-of-the-way when taking pictures) and has an electronic shutter mode — there is no mirror slap or shutter motion when taking pictures. This is important when taking pictures through large telephoto lenses where any motion or vibration will blur the image. I had hopes that this would help to get a sharp image of the moon. One limitation with the N1V1 with the FT1 adapter is that it can only autofocus through the center autofocus sensor. For this image I manually focused the lens (and set the camera to manual focus so it would not try to autofocus before releasing the electronic shutter). I used the remote (IR) shutter release so I would not be adding additional vibration to the system. I was impressed with the result. I did take several images trying different settings, and this was one of the better ones.

Last Quarter Moon, Late Fall in New Jersey. Image taken with a Nikon 1 V1 camera, FT1 adapter, and 500 mm f/4 VR lens (ISO 100, 500 mm, f/4, 1/500 sec). (David J Mathre)